STV8206 STMicroelectronics, STV8206 Datasheet - Page 33

• Manufacturer Part Number: STV8206
• Description: IC TV AUDIO PROC/DEMOD 80-TQFP
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of STV8206

• Applications: Radio
• Mounting Type: Surface Mount
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STV82x6
9
Note:
Note:
9.1
IC General Control
CUT_ID
RESET
CTRL
I2S
Name
Register List
The unused bits (defined as reserved) in I²C registers must be kept to zero.
The system clock registers (from address 08h to 0Bh) do not need to be modified if a standard
27 MHz quartz crystal is used
The demodulator registers (from address 0Ch to 54h) default values are optimum and any change
is not recommended, except for:
() used in reset value column means that the bit or the byte is read-only.
(S) symbol indicates that the field value is represented in signed binary format.
(*) The field AGC_ERR[4:0] (AGCS) can be written by user if the bit AGC_CMD (AGCC) is set to
one (by default controlled by AUTOSTD). To be used to adjust manually the input gain of analog
AGC amplifier for AM carrier (L/L’).
I²C Register Map
By default, all I²C registers controlled by Automatic Standard Recognition System (AUTOSTD) are
forced to Read-only mode for the user. These registers and bits are shaded in
●
●
●
●
●
●
●
AGCS (0Fh) to adjust AGC gain for AM carrier in L/L’ standard (AGC used in open loop)
CAROFFSET1(22h) and CAROFFSET2(3Ah) to compensate IF carrier frequency with an out-
of-standard offset
Soundlevel Prescaling PRE_FM(44h), PRE_NICAM(45h) and PRE_AUX(46h) to equalize
demodulated or external audio signal before audio processing. Peak detector registers
PEAK_DET_CTRL(4Bh) and PEAK_DET_STAT(4Ch) can be used to measure internal sound
level.
Sound source selection for each audio output channel Loudspeaker+Subwoofer, Headphone,
SCART and I²S to be done using CH_SEL(49h)
In Multi-lingual mode, CH_LANG(4Ah) selects separately the language for each audio output
channel.
AUTO_CTRL(50h) to select between L/L’ or D/K/K1/K2/K3 standard which can be
discriminated automatically. To be used also to change maximum FM deviation (125 kHz, by
default) in case of wide overmodulation.
AUTO_SCKM(51h) and AUTO_SCKST(52h) to define the list of mono and stereo standards to
be recognized automatically.
Addr.
(Hex)
00h
02h
03h
04h
Value (Bin)
(0001 0001)
0000 0000
0000 0000
0000 0000
Reset
Table 10: List of I²C Registers (Sheet 1 of 5)
SRS_ON
Bit 7
0
0
0
SCLPD_OF
Bit 6
BUS_EXPAND[1:0]
F
0
0
AUTO_OFF
Register Function and Description
Bit 5
0
Bit 4
I²S_EN
0
0
I2S_STD
SDI_EN
Bit 3
CUT_NUMBER[5:0]
0
SOFT_LRS
I2S_WSPO
Bit 2
T1
0
L
Table
SOFT_LRS
MCK_EN
Bit 1
Register List
10.
T2
0
SYSCK_EN
SOFT_RST
Bit 0
33/97
0