ak4141 AKM Semiconductor, Inc., ak4141 Datasheet
ak4141
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ak4141 Summary of contents
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... HDMI, digital tuner, digital switches and sound processing functions such as 5-band equalizers. The AK4141 supports major audio data formats (MSB/LSB justified, I interface with DSP, ADC, DAC. Therefore, the AK4141 is suitable for the AV systems such as Digital TV and DVR. ...
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... Stereo Decode EIAJ Decoder NICAM Prescale A2 Prescale Switch 1/2/3/4 Matrix SRC SRC Prescale Control Register CAD0 CAD1 SCL SDA INT PDN - 2 - [AK4141] DVDD GND1 TVDD GND2 DIT TXOUT TXIN ALC, Vol1 Balance1 Bass/Tre1 SDTO1 3D ALC, Vol2 Balance2 SDTO2 Bass/Tre2 3D SDTO3 6M5 4M50 4M51 4M52 ...
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... Ordering Guide -20 ∼ +85°C 48pin LQFP (0.5mm pitch) AK4141EQ AKD4141 Evaluation Board for AK4141 ■ Pin Layout VREFH 37 VREFL 38 GND3 39 SIF2 40 VCOM 41 SIF1 42 AVDD1 43 GND4 44 XTI 45 XTO 46 GND5 47 48 AVDD2 MS0952-E-00 AK4141EQ Top View - 3 - [AK4141] 24 TXOUT 23 A4M52 22 SDA 21 TVDD 20 GND2 ...
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... Control Data Clock Pin for I2C bus Power-Down Mode & Reset Pin When “L”, the AK4141 is powered-down, all registers are reset. And then all digital output pins go “L”. The AK4141 must be reset once upon power-up. Master Clock Input Pin S/PDIF Input Pin For through output ...
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... A 1μF capacitor should be connected to GND3 externally. Hi-Z when PDN Pin = “L”. Sound Intermediate Frequency(SIF) Input 1 Pin Analog Power Supply Pin, 3.0V~3.6V Ground Pin, 0V X'tal Input Pin X'tal Output Pin. Outputs “L” when PDN pin = “L”. Ground Pin, 0V Analog Power Supply Pin, 3.0V~3. [AK4141] 2008/05 ...
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... These pins should be open. These pins should be connected to GND. ABSOLUTE MAXIMUM RATINGS Note 1) Symbol AVDD DVDD TVDD IIN VINA VIND Ta Tstg Note 1) Symbol min AVDD 3.0 DVDD 1.7 TVDD DVDD - 6 - [AK4141] min max Units -0.3 4.3 V -0.3 2.4 V -0.3 4.3 V ± −0.3 AVDD+0.3 V −0.3 TVDD+0.3 V −20 °C 85 −65 ° ...
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... Note 3. Selected SIF pin is connected to GND through 10nF capacitor. Note 4. 1 FM-Carrier, 5.5MHz. MS0952-E-00 AUDIO CHARACTERISTICS min 4.05 5.09 30 0.1 0.1 0.1 0.1 0.1 0.1 0.05 0.05 min -1 min -1 min 47 -2 [AK4141] typ max Units 4.50 kohm 5.66 kohm 50 dB 0.64 dB 1.4 Vpp 1.0 Vpp 1.4 Vpp 1.0 Vpp 0.8 Vpp 0.8 Vpp 1.0 Vpp 1.0 Vpp +/-180 kHz +/-360 kHz ...
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... Symbol min typ FSI 8 FSO 32 - -100 - -100 - -100 - -91 - 115 - 115 - 115 111 115 1/6 min typ max 100 10 100 10 100 [AK4141] Units max Units 20 Bits 216 kHz 48 kHz - - Units μA μA μ ...
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... PR SA 102.2 SA 100.4 SA 99.0 SA 101.6 SA 99.5 SA 95.2 SA 96.6 SA 97.0 SA 94.4 SA 95.8 SA 95.0 SA 73.7 (Note [AK4141] typ max Units 0.4583FSI kHz 0.4167FSI kHz 0.3195FSI kHz 0.2852FSI kHz 0.2182FSI kHz 0.2177FSI kHz 0.1948FSI kHz 0.1458FSI kHz 0.1302FSI kHz 0.0917FSI kHz 0.0826FSI kHz 0.0583FSI kHz kHz kHz ...
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... tCLKH 43 fCLK 8.192 tCLKL 27 tCLKH 27 fCLK 12.288 tCLKL 20 tCLKH 20 fCLK 16.384 tCLKL 16 tCLKH 16 fCLK 24.576 tCLKL 11 tCLKH 11 fCLK 32.768 tCLKL 8 tCLKH [AK4141] min typ max - - - - - - 20%TVDD - - 30%TVDD - - - 0.4 ± typ max 256fs 8.192 11.2896 12.288 6.144 9.216 12.288 18.432 24.576 36.864 49 ...
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... Units 48 kHz kHz ns ns 192 KHz kHz kHz 1/8fs ...
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... Note 10. SCLK= SCLK4/SCLK5, LRCK= LRCK4/LRCK5. Note 11. This value is when fs=48kHz or 44.1kHz. When fs=32kHz, L=(5/9x100)% and H=(4/9x100)%. Note 12. The AK4141 can be reset by bringing the PDN pin = “L”. Note 13. This cycle is the number of LRCK rising edges from the PDN pin = “H”. ...
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... Figure 1. Clock Timing (TDM bit = “0”) 1/fCLK tCLKH tCLKL 1/fs tLRH tLRL tBCK tBCKH tBCKL Figure 2. Clock Timing (TDM bit = “1” [AK4141] VIH VIL VIH VIL VIH VIL VIH VIL VIH VIL VIH VIL 2008/05 ...
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... Figure 3. Audio Interface Timing (Slave mode, Normal Mode) LRCK tBLR SCLK SDTO SDTI Figure 4. Audio Interface Timing (Slave mode, TDM Mode) MS0952-E-00 tLRB tBSD tLRB tSDS tSDH - 14 - [AK4141] VIH VIL VIH VIL 50%TVDD VIH VIL VIH VIL tBSD 50%TVDD VIH VIL ...
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... SDTI Figure 5. Audio Interface Timing (Master mode, Normal Mode) LRCK tMBLR SCLK SDTO TDMIN Figure 6. Audio Interface Timing (Master mode, TDM Mode) MS0952-E-00 tDXS tDXH tSDS tSDH - 15 - [AK4141] 50%TVDD 50%TVDD tBSD 50%TVDD VIH VIL 50%TVDD 50%TVDD tBSD 50%TVDD VIH VIL 2008/05 ...
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... SDTO PDN SDA tLOW tR tBUF SCL tHD:STA tHD:DAT Stop Start MS0952-E-00 tPDV tPD Figure 7. Power Down & Reset Timing tHIGH tF tSU:DAT tSU:STA Start 2 Figure Bus mode Timing - 16 - [AK4141] VIH VIL 50%TVDD VIL VIH VIL tSP VIH VIL tSU:STO Stop 2008/05 ...
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... The on-chip X’tal oscillator or external system clock through MCKI can be used for the AK4141 operation. If the external clocks are not present, the AK4141 should be in the power-down mode (PDN pin = “L” the reset mode (RSTN bit = “0”). After exiting reset at power-up etc., the AK4141 is in the power-down mode until MCLK(or XTI) and LRCK are input ...
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... The AK4141 receives the Sound IF(SIF) signal and demodulates/decodes according to NICAM/A2/EIA-J standards. The AK4141 can automatically select the stereo standard according to the actual input signal, the A4M5[2-0] pins(XORed with A4M5[2-0] bits, default = “011”) and the A6M5 pin (XORed with A6M5 bit) setting. ...
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... The SCLK[4-5] and LRCK[4-5] should be synchronized to LRCK. 1. Normal mode: TDM bit = “0” The TDM bit = “0” sets the AK4141 audio serial interface format to the normal mode. The IIS pin, DIF1-0 bits and ODIF bit select following serial data format ...
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... Rch Data Don’t Care Rch Data Don’t Care Rch Data [AK4141 2008/05 ...
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... TDM mode: TDM bit = “1” The TDM bits = “1” set the AK4141 audio serial interface format to the TDM mode. The eight channel serial data (SDTI1/2/3 and SDTI4 at non-SRC mode) is input through the SDTI1 pin. The six channel serial data is output through the SDTO1 pin. The SDTI2/3/4/5 pins are not used for TDM input and the SDTO2/3 pins outputs “ ...
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... Main Volume: Stereo Main Volume Control. MS0952-E-00 Figure 15. (Audio Data from selector) Audio Processing Block Stereo FIL3 bit Separation Gain EQ0 bit GN1-0 bits Compensation 5 Band EQ5-1 bit EQ ALC ALC1/2 bits Balance BAL1/2 bits Main VOL1/2 bits Volume SDTO1, 2 Figure 15 Audio Processing Block - 22 - [AK4141] 2008/05 ...
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... FIL3: F3AS1/2 bit = “0”, F3A1[13:0], F3A1[13:0] bits =A, F3B1[13:0], F3B2[13:0] bits =B (MSB= F3A113(F3A213), F3B13(F3B213); LSB= F3A10(F3A20), F3B10(F3B20 tan (πfc/fs) Transfer function − H( − MS0952-E-00 1 − tan (πfc/fs tan (πfc/fs) 1 − tan (πfc/fs tan (πfc/fs [AK4141] 2008/05 ...
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... Figure 16. EQ0 Frequency Response GN1 GN0 Gain 0 0 0dB 0 1 +12dB 1 x +24dB Table 9. Gain select of gain block (x: Don’t care − tan (πfc /fs =10 x /fs tan (π Frequency 2 (default) [AK4141] /fs) 2 /fs) 1 2008/05 ...
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... EQC3-0: Select the boost level of 1kHz EQD3-0: Select the boost level of 3.5kHz EQE3-0: Select the boost level of 10kHz MS0952-E-00 (Note 16, Note EQx3-0 Boost amount 0H +12.0dB 1H +10.5dB 2H +9.0dB 3H +7.5dB : : 8H 0dB : : −7.5dB DH −9.0dB EH −10.5dB FH Table 10. Boost amount of 5 Band Equalizer - 25 - 17) Table (default) [AK4141] 23. 2008/05 ...
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... Table 13. ALC Zero Crossing Timeout Period - 26 - (Table 11), the VOL ALC1 Output ALC1 Output ≥ 6dB ≥ 12dB 1 1 (default 48kHz 2.7ms (default) 5.3ms 10.7ms 21.3ms [AK4141] (Table (default) 2008/05 ...
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... GAIN STEP 0 1 step 0.375dB 1 2 step 0.750dB 0 3 step 1.125dB 1 4 step 1.500dB Table 15. ALC Recovery GAIN Step - 27 - [AK4141] (Table 11) during the wait time, the ALC (Table 15 the set (Table 13). Then the 48kHz 2.7ms (default) 5.3ms 10.7ms 21.3ms 42.7ms 85.3ms 170 ...
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... Maximum gain at recovery operation Limiter ATT step Recovery GAIN step Fast Recovery Speed Table 18. Example of the ALC Setting - 28 - Step x 4 (default N/A fs=44.1kHz Data Operation −4.1dBFS 01 0 Enable 11 23.2ms 100 46.4ms 28H +6dB 00 1 step 00 1 step 00 4 times [AK4141] 2008/05 ...
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... ASD = “1”: run the Auto System Detection MS0952-E-00 PDN pin ="L" to "H" (Input SIF signal) 53H ASDC = "1" Y 41H SYS[3:0] = "0FH" Y: (system unk nown. rerun the ASD.) Auto System Detection completed. Normal Operation Figure 17. Basic Operation Sequence Example - 29 - [AK4141 2008/05 ...
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... All commands are preceded by a START condition. After the START condition, a slave address is sent. After the AK4141 recognizes the START condition, the device interfaced to the bus waits of the slave address to be transmitted over the SDA line. If the transmitted slave address matches an address for one of the devices, the designated slave device pulls the SDA line to LOW (ACKNOWLEDGE) ...
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... The AK4141 generates an acknowledge after each byte is received. In read mode, the slave, the AK4141 transmits eight bits of data, release the SDA line and monitor the line for an acknowledge acknowledge is detected and no STOP condition is generated by the master, the slave will continue transmitting data ...
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... The AK4141 is capable of more than one byte write operation by one sequence. After receipt of the third byte, the AK4141 generates an acknowledge, and awaits the next data again. The master can transmit more than one word instead of terminating the write cycle after the first data word is transferred. After the receipt of each data, the internal 8bits address counter is incremented by one, and the next data is taken into next address automatically. If the address exceeds TBDH prior to generating the stop condition, the address counter will “ ...
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... After receipt of the slave address with R/W bit set to “1”, the AK4141 generates an acknowledge, transmits 1byte data which address is set by the internal address counter and increments the internal address counter the master does ...
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... DIT16 SD1[2:0] 0 SD3[2:0] DPRE[4:0] I1PRE[4:0] I2PRE[4:0] I3PRE[4:0] I4PRE[4:0] SPRE[4:0] F3A1[7:0] F3A1[13:8] F3B1[7:0] F3B1[13:8] E0B1[7:0] E0B1[13:8] E0C1[7:0] F3A2[7:0] F3A2[13:8] F3B2[7:0] F3B2[13:8] E0B2[7:0] E0B2[13:8] E0C2[7:0] EQA1[3:0] EQC1[3:0] EQE1[3:0] EQA2[3:0] EQC2[3:0] EQE2[3:0] ZTM1[1:0] RFST1[1:0] LMAT1[1:0] LMTH1[1:0] ZTM2[1:0] RFST2[1:0] LMAT2[1:0] LMTH2[1:0] [AK4141] D0 RSTN ODIF 2008/05 ...
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... ASDC BI IMONO MONO SRIND SRCMP SRST LOR ROL LRSUM 0 0 AAOMT ASDMT LMT 0 0 DATK[1:0] 0 PREL[7:0] PRER[7:0] LEVL[7:0] LEVR[7: [AK4141 BMOD CS3 CS2 CS[41:40] CS[29:28] CS[35:33] IFVOL[5:0] SYS[3:0] ID[1:0] STD[2:0] DECFS[1:0] DM1MD DM1DV[1:0] DM2MD 0 LSEL[1:0] RSEL[1:0] AMOD[1:0] NICT[4:0] AGDC[3:0] AMDC[3:0] SNDST[1:0] C2DET C1DET ...
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... CR2N[7:0] CR2Q[15:8] CR2Q[7:0] PLTM[7:0] SUBM[7:0] SUBN[7:0] 00H 00H 00H 00H C1QTH[7:0] C1QTL[7:0] C2QTH[7:0] C2QTL[7:0] C1PTH[7:0] C1PTL[7:0] FSMTH[7:0] FSMTL[7:0] FSNTH[7:0] FSNTL[7:0] NERTH[7:0] NERTL[7:0] 00H 00H 00H 00H ASDMT[7:0] ASDFT[7:0] ASQT[7:0] AANT[7:0] ANNT[7:0] NICN[15:8] NICN[ 7:0] SQLT[7:0] SNST[7:0] AVCH[7:0] AVCL[7: [AK4141 2008/05 ...
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... PWOS: X’tal Oscillator Power Control 0: Power down 1: Power up (default) PWSR: SRC Power Control 0: Power down 1: Power up (default) PWDT: DIT Power Control 0: Power down 1: Power up (default) MS0952-E- PWDT PWSR PWOS PWDE R/W R/W R/W R [AK4141 AFEM1 0 ROLL RSTN R/W R/W R/W R 2008/05 ...
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... Table 21. Sample Rate MCKE bit Sample Rate 0 (default) Outputs “L” 1 Outputs X’tal (or MCKI) frequency x 1/4. 0 Outputs X’tal (or MCKI) frequency x 1/2. 1 Outputs X’tal (or MCKI) frequency. Table 22. Sample Rate - CKS[2:0] R/W R/W R Note: MCKO≤512fs [AK4141] D0 R/W 0 2008/05 ...
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... Figure 28. TDM IIS Timing - 39 - [AK4141 R/W R/W R ...
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... SWCK: MCLK/X’tal Control 0: X’tal (default) 1: MCLK SWSR: SRC Input Control 0: SDTI4 (default) 1: SDTI5 BPSR: SRC Bypass 0: SRC Mode (default) 1: SRC Bypass Mode MS0952-E- BPSR SWSR SWCK SWSF R/W R/W R/W R [AK4141 SMUT3 SMUT2 SMUT1 SMUTT R/W R/W R/W R 2008/05 ...
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... SDRI4 05: SRC 06: reserved 07: Mute SD3[2:0]: SDTO3 Source Data Control 00: Decoder (default) 01: SDTI1 02: SDRI2 03: SDRI3 04: SDRI4 05: SRC 06: reserved 07: Mute MS0952-E- DIT[2:0] R/W R/W R/W R SD2[2:0] R/W R/W R/W R [AK4141 SD1[2:0] R/W R/W R/W R SD3[2:0] R/W R/W R/W R 2008/05 ...
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... SIF2 low gain mode S2D-Gain=4.5dB GSEL1 0 : SIF1 high gain mode S2D-Gain=7.5dB(default SIF1 low gain mode S2D-Gain=4.5dB MS0952-E- GSEL2 GSEL1 R/W R/W R/W R [AK4141 DPRE[4:0] I1PRE[4:0] I2PRE[4:0] I3PRE[4:0] I4PRE[4:0] SPRE[4:0] R/W R/W R/W R 2008/05 ...
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... E0A1[15:0], E0B1[13:0], E0C1[15:0]: EQ (Gain Compensation Filter) Coefficient (14bit 16bit x 1) default: “2000H” GN1[1:0]: Additional Gain Select 1 0: 0dB (default) 1: +12dB 2: +24dB 3: +24dB MS0952-E- F3A1[7:0] F3AS1 F3BP1 F3B1[7:0] 0 E0A1[7:0] E0A1[15:8] E0B1[7:0] GN1[1:0] E0C1[7:0] E0C1[15:8] R/W R/W R/W R [AK4141 F3A1[13:8] F3B1[13:8] E0B1[13:8] R/W R/W R/W R/W 2008/05 ...
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... E0A2[15:0], E0B2[13:0], E0C2[15:0]: EQ (Gain Compensation Filter) Coefficient (14bit 16bit x 1) default: “2000H” GN2[1:0]: Additional Gain Select 2 0: 0dB (default) 1: +12dB 2: +24dB 3: +24dB MS0952-E- F3A2[7:0] F3AS2 F3BP2 F3B2[7:0] 0 E0A2[7:0] E0A2[15:8] E0B2[7:0] GN2[1:0] E0C2[7:0] E0C2[15:8] R/W R/W R/W R [AK4141 F3A2[13:8] F3B2[13:8] E0B2[13:8] R/W R/W R/W R/W 2008/05 ...
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... EQB2[3:0] EQD2[3:0] EQ2 0 R/W R/W R/W R Boost amount 0H +12.0dB 1H +10.5dB 2H +9.0dB 3H +7.5dB : : 8H 0dB : : −7.5dB DH −9.0dB EH −10.5dB FH Table 23. Boost amount of 5 Band Equalizer - 45 - [AK4141 EQA1[3:0] EQC1[3:0] EQE1[3:0] R/W R/W R/W R EQA2[3:0] EQC2[3:0] EQE2[3:0] R/W R/W R/W R (default) 2008/05 ...
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... N ZTM1[1:0] RFST1[1:0] R/W R/W R 44.1kHz 48kHz 2.9ms 2.7ms (default) 5.8ms 5.3ms 11.6ms 10.7ms 23.2ms 21.3ms 46.4ms 42.7ms 92.9ms 85.3ms 185.8ms 170.7ms 371.5ms 341.3ms 48kHz 2.9ms 2.7ms (default) 5.8ms 5.3ms 10.7ms 21.3ms x 4 (default [AK4141] D0 R/W 0 2008/05 ...
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... Table 28. ALC1 Limiter ATT Step RGAIN10 GAIN STEP 0 1 step 0.375dB 1 2 step 0.750dB 0 3 step 1.125dB 1 4 step 1.500dB Table 29. ALC1 Recovery GAIN Step - 47 - [AK4141 LMAT1[1:0] LMTH1[1:0] R/W R/W R/W R (default) ALC1 Output ≥ 12dB 1 1 (default) ...
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... Level. Default: “91H” (0.0dB) IREF1[7-0]bits F1H F0H EFH C5H 92H 91H 90H 02H 01H 00H Table 30. Reference value at ALC1 Recovery Operation MS0952-E- R/W R/W R/W R GAIN(0dB) +36.0 +35.625 +35. +19.5 0.375dB : : +0.375 0.0 (default) -0.375 : : -53.625 -54.0 MUTE - IREF1[7:0] R/W R/W R Step [AK4141] D0 R/W 1 2008/05 ...
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... N ZTM2[1:0] RFST2[1:0] R/W R/W R 44.1kHz 48kHz 2.9ms 2.7ms (default) 5.8ms 5.3ms 11.6ms 10.7ms 23.2ms 21.3ms 46.4ms 42.7ms 92.9ms 85.3ms 185.8ms 170.7ms 371.5ms 341.3ms 48kHz 2.9ms 2.7ms (default) 5.8ms 5.3ms 10.7ms 21.3ms x 4 (default [AK4141] D0 R/W 0 2008/05 ...
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... Table 35. ALC2 Limiter ATT Step RGAIN20 GAIN STEP 0 1 step 0.375dB 1 2 step 0.750dB 0 3 step 1.125dB 1 4 step 1.500dB Table 36. ALC2 Recovery GAIN Step - 50 - [AK4141 LMAT2[1:0] LMTH2[1:0] R/W R/W R (default) ALC2 Output ≥ LMTH ≥ LMTH 1 1 (default ...
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... Level. Default: “91H” (0.0dB) IREF2[7:0]bits F1H F0H EFH C5H 92H 91H 90H Table 37. Reference value at ALC2 Recovery Operation MS0952-E- R/W R/W R/W R GAIN(0dB) +36.0 +35.625 +35. +19.5 0.375dB : : +0.375 0.0 (default) -0.375 : : -53.625 -54.0 MUTE - IREF2[7:0] R/W R/W R Step [AK4141] D0 R/W 1 2008/05 ...
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... L=mute, R=0dB 7E: L=-126dB, R=0dB … 01: L=-1dB, R=0dB 00: L=0dB, R=0dB (default) FF: L=0dB, R=-1dB … 81: L=0dB, R=-127dB 80: L=0dB, R=-Mute MS0952-E- R/W R/W R/W R BAL1[7:0] BAL2[7:0] R/W R/W R/W R [AK4141 BMODE R/W R/W R/W R R/W R/W R/W R 2008/05 ...
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... VOL2[7:0]: Main Volume 2 Control VOL MS0952-E- R/W R/W R/W R 1[7:0], 2[7:0] Volume Gain VOL 00H +12dB 01H +11.5dB 02H +11.0dB : : 17H +0.5dB 18H 0dB 19H -0.5dB : FEH -115dB FFH MUTE (-∞) Table 38. Main Volume Control 1 VOL1[7:0] VOL2[7:0] R/W R/W R (default) [AK4141] D0 R/W 0 2008/05 ...
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... CS40, 41: CGMS-A 00: Copying is permitted without restriction (default) 01: Copying not be used 10: One generation of copies may be used 11: No copying is permitted MS0952-E- CS[27:24] R/W R/W R/W R R/W R/W R/W R [AK4141 CS3 CS2 CS1 R/W R/W R/W R CS[41:40] CS[29:28] R/W R/W R/W R 2008/05 ...
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... Reserved 0001: 16kHz 0000: Original Sampling frequency is not indicated (default) All other C bits are fixed to “0”. MS0952-E- CS[15:8] R/W R/W R/W R CS[39:36] R/W R/W R/W R [AK4141 R/W R/W R/W R CS[35:33] CS32 R/W R/W R/W R 2008/05 ...
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... MS0952-E- AGOFF 0 R/W R/W R/W R AGC status Enabled Disabled Table 39. AGC disable IFVOL[5:0] SIF Gain 00H -3.18dB 01H -2.74dB 02H -2.30dB : : 2DH +21.89dB 2EH +22.63dB 2FH +23.42dB Table 40. SIF volume control - 56 - [AK4141 IFVOL[5:0] R/W R/W R/W R (default) (default) 2008/05 ...
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... Automatic system detection Disabled Enabled Table 41. Automatic system detection Sound Modulation FM-Stereo (A2) FM-Mono/NICAM AM-Mono/NICAM FM-Mono/NICAM FM-Stereo (A2, D/K1) FM-Stereo (A2, D/K2) FM-Stereo (A2, D/K3) FM-Mono/NICAM (D/K, NICAM) FM-Stereo (A2) FM-Stereo (EIA-J) N/A FM-Stereo (Radio - US) FM-Stereo (Radio - Europe) Unknown/FM-Stereo (Radio - Europe [AK4141 SYS[3:0] R/W R/W R/W R (default) (default) 2008/05 ...
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... FM Radio (75µs) FM Radio (50µs) NICAM Table 44. Decoding Standard R/W R/W R/W R DECFS[1:0] Decoder Sample Rate 00H (default) 48kHz 01H 32kHz 44.1kHz 02H 03H reserved Table 45. Sample Rate - ID[1:0] STD[2:0] R/W R/W R (default) (default DECFS[1:0] R/W R/W R [AK4141 R/W 0 2008/05 ...
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... Table 46. Demod 1 Filter Demod 1 FM/AM Mode FM AM Table 47. Automatic system detection Demod 1 Maximum FM Deviation 50 kHz 100 kHz 384 kHz 540 kHz 200 kHz Reserved Reserved Reserved Table 48. Demod 1 Maximum FM Deviation - DM1M DM1LP[1:0] DM1DV[1:0] D R/W R/W R/W R (default) (default) (default) [AK4141] D0 R/W 0 2008/05 ...
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... D5 D4 DM1F[15:8] DM1F[7:0] R/W R/W R/W R (Table Table 49 represents typical values, which is not meant to be DM1F[15:0] fs=48kHz/32kHz 0xC180 0xB39C 0xACAB 0xA5B9 Table 49. Demod 1 carrier frequency - 60 - [AK4141 R/W R/W R/W R 45) for the input sample rate that fs=44.1kHz 0xBBF9 0xACDB 0xA54C 0x9DBD 2008/05 ...
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... Table 51. Demod 2 Filter R/W R/W R/W R DM2F[15:0] fs=48kHz/32kHz 0xBE63 0xB03F 0xAEC0 0xA916 0xA500 0xA25C Table 52. Demod 2 carrier frequency - DM2MD R/W R/W R (default) (default DM2F[15:8] DM2F[7:0] R/W R/W R fs=44.1kHz 0xB895 0xA932 0xA791 0xA166 0x9CF4 0x9A14 [AK4141 R R/W 0 (default) 2008/05 ...
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... Left Preferred Outputs for AUTO = “1” EIAJ, A2 EIA-J, A2 NICAM (Mono) (Dual Mono) (Stereo) A Mono (AMono) B(A) Table 55. Left Output for AUTO= “1” LSEL[1:0] RSEL[1:0] R/W R/W R (default) FM Radio Mono L L (default) A Mono B L-R NICAM NICAM (Mono/ Data) (Dual Mono) A (AMono (AMono) B (AMono) [AK4141] D0 R/W 1 2008/05 ...
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... Table 58. LSEL Definition RSEL Definition Standard Definition (LSEL defined according to Table 54, Left Channel Definition (LSEL defined according to Table 56, Table 59. LSEL Definition - Radio Mono R R (default) A Mono B L-R NICAM NICAM (Mono/ Data) (Dual Mono) A (AMono) A (AMono) B (AMono) (default) (default) Table 55) Table 57) [AK4141] 2008/05 ...
Page 64
... Pilot PLL lock status PLL unlocked PLL locked Table 62. Pilot PLL lock status - 64 - Default 56, Table 57) 54, Table 55 AMOD[1: NICAM FM Radio N/A N/A N/A N/A N/A N/A N/A N (default) [AK4141 LOCK RD 0 2008/05 ...
Page 65
... Two independent mono sound signals transmitted 0 in alternate frames (designated M1 and M2.) 1 One 704 kbit/s transparent data channel. 0 Undefined. 1 Undefined. 0 Undefined. 1 Undefined. Table 64. NICAM control bits [AK4141 ...
Page 66
... Attack Time (ms) 0H 0.055 1H 0.075 2H 0.11 3H 0.15 4H 0.22 5H 0.30 6H 0.45 7H 0.9 8H 1.2 9H 1.8 AH 2.4 BH 7.1 CH 14.2 DH 28.5 EH 56.9 FH 113.8 Table 65. AGC attack time [3:0] Decay Time (ms) 0H 0.9 1H 1.2 2H 1.8 3H 2.4 4H 3.6 5H 4.8 6H 7.1 7H 14.2 8H 19.0 9H 28.5 AH 38.0 BH 113.8 CH 227.6 DH 455 EH 910 FH 1820 Table 66. AGC decay time - 66 - [AK4141 AGDC[3:0] R/W R/W R/W R (default) (default) 2008/05 ...
Page 67
... Attack Time (ms) 0H 0.11 1H 0.15 2H 0.22 3H 0.30 4H 0.44 5H 0.59 6H 0.89 7H 1.8 8H 2.4 9H 3.6 AH 4.7 BH 14.2 CH 28.4 DH 56.9 EH 113.8 FH 227.6 Table 67. AGC attack time AM [3:0] Decay Time (ms) 0H 1.8 1H 2.4 2H 3.6 3H 4.7 4H 7.1 5H 9.5 6H 14.2 7H 28.4 8H 37.9 9H 56.9 AH 75.9 BH 227.6 CH 455.1 DH 910.2 EH 1820 FH 3640 Table 68. AGC decay time [AK4141 AMDC[3:0] R/W R/W R/W R (default) (default) 2008/05 ...
Page 68
... NICT[2:1] Status Analog Sound Standard (AM/FM) active Bad reception condition of analog sound Digital Sound (NICAM) available Bad reception condition of digital sound Table 69. Sound Status nd A2 carrier) has been detected [AK4141 SNDST[1:0] C2DET C1DET indicate bilingual (0x2.) indicate stereo (0x0 ...
Page 69
... LRSL or RRSL change makes INT pin active. Table 70. Status Change Output Status Change Output Polarity Active high Active low Table 71. Status Change Output Polarity Status Change Output Disabled Enabled Table 72. Status Change Output - ASTAT STAP R/W R/W R (default) (default) (default) [AK4141] D0 STAE R/W 0 2008/05 ...
Page 70
... A/D Headroom (dBFS) 0H -24 1H -21 2H -18 3H - Table 73. A/D Headroom R/W R/W R/W R AGC Feedback State Running Frozen Table 74. AGC Feedback State - 70 - [AK4141 HDRM[2:0] R/W R/W R/W R (default AGFRZ R/W R/W R/W R (default) 2008/05 ...
Page 71
... Table 75. Stereo Search System Change Mode SRCMP Stereo Search Disabled One-time Search Enabled returns to 0x0 after stereo carrier detected) SREN[1:0] Continuous Search Enabled Continuous Search Enabled Table 76. Stereo Search - CHMD[1:0] SREN[1:0] R/W R/W R (default) bit in the Stereo Carrier Search Result register (default) [AK4141] D0 R/W 0 2008/05 ...
Page 72
... SRRSL and SYS are the same SRRSL and SYS are different Stereo Carrier Search Status Not searching Searching Table 79. Stereo Carrier Search Status Stereo Carrier Search Indicator is detected and Carrier 2 is not detected otherwise Table 80. Stereo Carrier Search Indicator - 72 - [AK4141 SRRSL[3: ...
Page 73
... ASDMT LMT AAOMT R/W R/W R Right Channel Not Muted Muted Table 83. Mute Control Rch Left Channel Not Muted Muted Table 84. Mute Control Lch - 73 - [AK4141 LRSL[1:0] RRSL[1: Radio Mono (default) R Mono L-R FM Radio Mono (default) ...
Page 74
... Table 86. Mute Result Rch Left Channel Not Muted Muted Table 87. Mute Result Lch ASD Mute Not Muting Muting Table 88. ASD Mute AAOS Mute Output is not currently muted by AAOS. Output is currently muted by AAOS. Table 89. AAOS Mute - 74 - [AK4141] (default) (default) (default) (default) (default) 2008/05 ...
Page 75
... D4 0 R/W R/W R/W R Decoder Standard Preference1 SECAM L NICAM D/K1, D/K2, D/K3 or D/K NICAM Table 90. Decoder Standard Preference 1 Decoder Standard Preference2 Reserved EIAJ M-Korea PAL (Chroma Carrier) Reserved Reserved Reserved Reserved Table 91. Decoder Standard Preference [AK4141 A6M5 A4M5[2:0] R/W R/W R/W R (default) (default) 2008/05 ...
Page 76
... Table 93. Decoder AVC Decay time AVC Attack time 11 msec 21 msec 44 msec 85 msec Table 94. AVC Decay time R/W R/W R/W R Level Prescaler Mode Automatic Manual Table 95. Level Prescaler Mode - 76 - [AK4141 DDEC[1:0] AVCE R/W R/W R/W R (default) (default) (default PRECTL R/W R/W ...
Page 77
... Automatic Volume Control. By using the following formula, set the desired output level. The gain must be a value from 1/256 to 1. LEVL[7:0], LEVR[7:0] = Gain x 256 - 1 (unsigned) MS0952-E- PREL[7:0] PRER[7:0] R/W R/W R/W R LEVL[7:0] LEVR[7:0] R/W R/W R/W R [AK4141 R/W R/W R/W R R/W R/W R/W R 2008/05 ...
Page 78
... This ensures that the values read from the two registers come from the same 16-bit word. MS0952-E- (Hz) (Hz) (Table 45) for the input sample rate that corresponds (in 2’s complement) (Table - 78 - [AK4141 CR1F[15:8] CR1F[7:0] RD 00000000 CR1P[15:8] CR1P[7:0] ...
Page 79
... Table 96. Carrier 1 average magnitude (unsigned) Average Carrier Magnitude Noise (dBFS -12 -18 -24 -30 -36 -42 -48 -54 -60 -66 -72 Table 97. Carrier 1 average magnitude noise - 79 - [AK4141 CR1M[15:8] CR1M[7:0] RD 00000000 CR1N[15:8] CR1N[7:0] RD 00000000 2008/ ...
Page 80
... This ensures that the values read from the two registers come from the same 16-bit word. CR1Q [15:0] 0xFFFF 0x4000 0x1000 0x0400 0x0100 0x0040 0x0010 0x0004 0x0001 MS0952-E- (unsigned) Ratio of CR1M to CR1N (dB) > -12 -24 <-36 Table 98. Carrier 1 quality - CR1Q[15:8] CR1Q[7:0] RD 00000000 [AK4141 2008/05 ...
Page 81
... MS0952-E- (Hz) (Hz) (Table 45) for the input sample rate that corresponds (unsigned) Average Carrier Magnitude (dBFS -12 -15 -18 -21 -24 -27 -30 Table 99. Carrier 2 average magnitude - 81 - [AK4141 CR2F[15:8] CR2F[7:0] RD 00000000 CR2M[15:8] CR2M[7:0] RD 00000000 2008/ ...
Page 82
... Average Carrier Magnitude Noise (dBFS -12 -18 -24 -30 -36 -42 -48 -54 -60 -66 -72 Table 100. Carrier 2 average magnitude noise D7 D6 (unsigned) Ratio of CR2M to CR2N (dB) > -12 -24 Table 101. Carrier 2 quality - CR2N[15:8] CR2N[7:0] RD 00000000 CR2Q[15:8] CR2Q[7:0] RD 00000000 [AK4141 2008/05 ...
Page 83
... Table 102. Pilot magnitude subcarrier magnitude 25.5kHz 20kHz 15kHz 0kHz Table 103. FM subcarrier magnitude Carrier Deviation 25.5kHz 20kHz 15kHz 0kHz Table 104. FM subcarrier magnitude - 83 - [AK4141 PLTM[7:0] RD 00000000 SUBM[7:0] RD 00000000 SUBN[7:0] RD 00000000 ...
Page 84
... Carrier 1 Quality low threshold. This 8-bit threshold is compared against the top 13 bits of carrier 1 quality (CR1Q[15:3]). The threshold is extended to 13 bits by concatenating five zeros above its MSB. MS0952-E- C1QTH[7:0] R/W 00100010 C1QTL[7:0] R/W 00010110 - 84 - [AK4141 2008/05 ...
Page 85
... Carrier 1 phase noise low threshold. This 8-bit threshold is compared against the top 11 bits of carrier 1 phase noise (CR1P[15:5]). The threshold is extended to 11 bits by concatenating three zeros above its MSB. MS0952-E- C2QTH[7:0] R/W 00110100 C2QTL[7:0] R/W 00100001 C1PTH[7:0] R/W 10000000 C1PTL[7:0] R/W 00100000 - 85 - [AK4141 2008/05 ...
Page 86
... NICAM error rate low threshold. Compared against NICAM error rate (NERR[15:8].) MS0952-E- FSMTH[7:0] R/W 01111101 FSMTL[7:0] R/W 01001011 FSNTH[7:0] R/W 00010100 FSNTL[7:0] R/W 00001010 NERTH[7:0] R/W 01010000 NERTL[7:0] R/W 00110000 - 86 - [AK4141 2008/05 ...
Page 87
... MSB and then it is compared against the top 13 bits of carrier 1 & quality Carrier1Quality[15:3] 0 ASQTh[7:0] MS0952-E- compare 13 [12:0] >= 5 [12:8] 8 [7:0] Figure 29. Carrier Quality Threshold - 87 - [AK4141 ASDMT[7:0] R/W 00011001 ASDFT[7:0] R/W 00011000 ASQT[7:0] R/W 00000000 values(Figure 29, ...
Page 88
... Carrier AM Noise Threshold (kHz) (for Fs = 18.432MSPS) Table 106.Typical Carrier AM Noise Threshold Values MS0952-E-00 ASQT (decimal) -INF 0 10 142 30 253 AANT (decimal 4.5 1 40.5 9 225 50 450 100 1147.5 255 - 88 - [AK4141] (default) (Recommended AANT[7:0] R/W 1111 1111 (Recommended) (default) 2008/05 D0 ...
Page 89
... NICAM DQPSK symbol. Average Symbol Phase Error Magnitude = NICNs * 22.5 / 8192 MS0952-E- ANNT (decimal 7.0 10 21.1 30 22.5 32 179 255 NICN[15:8] NICN[7: (degrees [AK4141 ANNT[7:0] R/W 1111 1111 (default) (Recommended 2008/ ...
Page 90
... Carrier FM Quality Threshold (dB)= 20*log(SQlTh/8) Carrier FM Quality Table 108.Typical Carrier FM Quality Threshold Values MS0952-E- (Figure 30, Table 108). compare 13 [12:0] >= 5 [12:8] 8 [7:0] Figure 30. Carrier 2 Quality Threshold SQLT Threshold (dB) (decimal) -INF 10 142 30 253 - SQLT[7:0] R/W 00000000 Carrier2QualityGood (default) [AK4141 2008/05 ...
Page 91
... The values of these registers should not exceed 128. MS0952-E- SNST (decimal 7.0 10 21.1 30 22.5 32 179 255 20*log10(threshold/128 [AK4141 SNST[7:0] R/W 1111 1111 (Recommended) (default AVCH[7:0] R/W 0010 0110 AVCL[7:0] R/W 0001 1011 D0 D0 ...
Page 92
... MUTE MUTE LOUT3 24 0.1u MUTE PVSS 23 + PVDD MUTE 22 10u ROUT2 21 MUTE LOUT2 20 MUTE MSB 19 ROUT1 18 LOUT1 17 0.1u DVSS2 16 + DVDD2 5V Digital 15 10u SCL 14 SDA 13 3.3V Digital Optical Output TXO 24 A4M52 23 SDA 22 0.1u TVDD 21 + 10u GND2 20 0.1u GND1 19 + DVDD 18 1.8V Digital 10u TXIN 17 MCLKI 16 PDN 15 SCL 14 A4M51 13 [AK4141] O/E 2008/05 ...
Page 93
... All GND pins must be connected to analog ground plane. System analog ground and digital ground should be connected together near to where the supplies are brought onto the printed circuit board. Decoupling capacitors should be as near to the AK4141 as possible, with the small value ceramic capacitor being the nearest. 2. Voltage Reference Inputs The voltage of AVDD sets the analog input/output range. A 1μ ...
Page 94
... LQFP(Unit:mm 0.5 ■ Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: MS0952-E-00 PACKAGE 9.0 ± 0.2 7 0.22 ± 0.1 0.10 M 0° ∼ 10° 0.10 0.3~0.75 Epoxy Cu Solder (Pb free) plate - 94 - 1.70Max 0.13 ± 0.13 1.40 ± 0.05 [AK4141] 2008/05 ...
Page 95
... Date (YY/MM/DD) Revision 08/05/09 00 MS0952-E-00 MARKING AK4141EQ XXXXXXX 1 XXXXXXX: Date code identifier REVISION HISTORY Reason Page Contents First edition - 95 - [AK4141] 2008/05 ...
Page 96
... AKEMD harmless from any and all claims arising from the use of said product in the absence of such notification. MS0952-E-00 IMPORTANT NOTICE , and AKEMD assumes no responsibility for such use, except for the use Note2 [AK4141] in any safety, life support, or Note1) 2008/05 ...