STV8203 ST Microelectronics, STV8203 Datasheet - Page 16

• Manufacturer Part Number: STV8203
• Description: MULTISTANDARD TV SOUND DEMODULATOR
• Manufacturer: ST Microelectronics

STV8203
PROGRAMMING THE DEVICE (continued)
PRE-LINE-IN (IF Input Selection and Audio Matrix Gain Control)
Address
Type
Reset
IF SWITCH
AGC SWITCH OFF
LINE INPUTS GAIN : allow the levels of the analog line inputs (SCART1, SCART2 and MONO) to be
AUD-MX-CNT (Audio Matrix Control)
Address
Type
Reset
These 8 bits are used to control the audio matrix configuration (see Figure 1).
16/31
IF SWITCH
7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
MOUT1
bit 7
bit 7
X
X
X
X
X
X
X
X
X
X
X
X
6
0
0
0
0
1
1
1
1
AGC SWITCH OFF
: 07
: R/W
: 0000 1000
: 08
: R/W
: 0010 0010
X
X
X
X
X
X
X
X
X
X
X
X
5
0
0
1
1
0
0
1
1
bit 6
Data bits
bit 6
X
X
X
X
X
X
X
X
X
X
X
X
4
0
1
0
1
0
1
0
1
: IF Input Switch
: can be used to switch-off the AGC amplifier..
controls the IF input selection (0 = IF1).
adjusted simultaneously.
1000
0010
1110
(step size = 1dB, range = 6dB)
S1 O/P SELECT
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
3
0
1
0
1
bit 5
2
0
0
0
0
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
+6dB
-6dB
0dB
bit 5
0
1
0
0
1
1
0
0
1
1
X
X
X
X
X
X
X
X
X
X
X
X
(default setting)
bit 4
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
0
1
0
1
0
1
bit 4
Reset : AO1 and AO2 = DAC and MOUT = (L1+R1)/2
AO2 = Muted
AO2 = Muted
AO2 = AO1 (reset state)
AO2 = LI1 (Scart 1 input)
AO2 = Muted
AO2 = Muted
AO2 = Muted
AO2 = Muted
AO1 = Muted
AO1 = MIN
AO1 = DAC (reset state)
AO1 = Muted
AO1 = LI2 (Scart 2 input)
AO1 = Muted
AO1 = Muted
AO1 = Muted
MOUT = (L1+R1)/2 (reset state)
MOUT = R1
MOUT = L1
Not used
0
MOUT0
bit 3
bit 3
Actual Function Selected
bit 2
LINE INPUTS GAIN
bit 2
S2 O/P SELECT
bit 1
bit 1
bit 0
bit 0