IDT821054APFG8 IDT, Integrated Device Technology Inc, IDT821054APFG8 Datasheet - Page 31

• Manufacturer Part Number: IDT821054APFG8
• Description: IC PCM CODEC QUAD MPI 64-TQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: PCM Codec/Filterr

Specifications of IDT821054APFG8

• Data Interface: PCM Audio Interface
• Number Of Adcs / Dacs: 4 / 4
• Sigma Delta: No
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 821054APFG8

IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE
LREG9: A/D Gain, D/A Gain, Channel Power Down and PCM Receive Path Cutoff, Read/Write (08H/88H)
LREG10: Tone Generator Enable and Tone Program Enable, Read/Write (09H/89H)
This register is used for MCU to monitor the transmit (A to D) PCM data. For linear code, this register contains the high byte of the
transmit PCM data. For compressed code (A/µ-Law), this register is not used (when being read, it will output a data byte of 00H).
The high byte of transmit PCM data will be read out by applying a read command to this register, and at the same time, it will be
transmitted to the PCM highway without any interference.
The Channel Power Down bit (PD) selects the operation mode for the corresponding channel:
PD = 0:
PD = 1:
The PCMCT bit determines the operation of PCM Receive Path of the corresponding channel:
PCMCT = 0:
PCMCT = 1:
The A/D Gain bit (GAD) sets the gain of analog A/D for the corresponding channel:
GAD = 0:
GAD = 1:
The D/A Gain bit (GDA) sets the gain of analog D/A for the corresponding channel:
GDA = 0:
GDA = 1:
Attention: To ensure proper operation, the lower 4 bits of the I/O data byte following the write command (88H) must be '0000'.
TPROG1 = 0: The default amplitude and frequency coefficients are selected for tone generator 1 (default);
TPROG1 = 1: The amplitude and frequency coefficients for tone generator 1 are programmed by the Coe-RAM.
TPROG0 = 0: The default amplitude and frequency coefficients are selected for tone generator 0 (default);
TPROG0 = 1: The amplitude and frequency coefficients for tone generator 0 are programmed by the Coe-RAM.
TEN1 = 0:
TEN1 = 1:
TEN0 = 0:
TEN0 = 1:
Command
Command
I/O data
I/O data
The corresponding channel is in normal operation state;
The corresponding channel is powered down (default).
The PCM Receive Path of the corresponding channel is in normal operation state (default);
The PCM Receive Path of the corresponding channel is cut off.
0 dB (default);
+6 dB.
0 dB (default);
-6 dB.
Tone generator 1 is disabled (default);
Tone generator 1 is enabled.
Tone generator 0 is disabled (default);
Tone generator 0 is enabled.
R/W
R/W
PD
b7
b7
PCMCT
b6
b6
0
0
Reserved
GAD
b5
b5
0
0
GDA
31
b4
b4
0
0
TPROG1
b3
b3
1
0
1
TPROG0
b2
b2
0
0
0
TEN1
b1
b1
INDUSTRIAL TEMPERATURE
0
0
0
TEN0
b0
b0
0
0
1