STV82X6 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV82X6' PDF : 97 Pages View PDF
STV82x6
9 Register List
Register List
Note:
Note:
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:
● 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.
() 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’).
9.1 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 Table 10.
Table 10: List of I²C Registers (Sheet 1 of 5)
Name
Addr. Reset
(Hex) Value (Bin) Bit 7
Register Function and Description
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
Bit 0
IC General Control
CUT_ID
00h
RESET
02h
CTRL
03h
I2S
04h
(0001 0001)
0000 0000
0000 0000
0000 0000
SRS_ON
0
0
SCLPD_OF
F
AUTO_OFF
0
BUS_EXPAND[1:0]
0
I²S_EN
0
0
0
0
CUT_NUMBER[5:0]
0
SOFT_LRS
T1
SOFT_LRS
T2
SOFT_RST
SDI_EN
0
MCK_EN SYSCK_EN
I2S_STD
I2S_WSPO
L
0
0
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