STV8203 ST Microelectronics, STV8203 Datasheet - Page 12

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

SWD (Switch, Dematrix & De-emphasis)
AUDIO MATRIX
NICAM
AUTOSTANDARD
ZWEITON
DEMODULATOR
STV8203
PROGRAMMING THE DEVICE
1 - I
Write
Read
S = Start, A = Acknowledge, P = Stop, N = No acknowledge.
Sub-address is the register address pointer ; this value auto-increments for both write and read.
2 - List of Registers
Registers not controlled by AUTOSTANDARD, except bits marked ”*” which are controlled
12/31
PRE-FM
PRE-NICAM
STD-CT-IIS
FMDC1
FMDC2
PRE-LINE-IN
AUD-MX-CNT
NICON
ERR-COUNT
AO-STAT0
AO-STAT1
AO-STAT2
AO-CONTROL
AO-TIMEOUT
ZWEITON
AGCC
AGCS
IAGCR
IAGCC
IAGCS
FFFIXL
FFFIXH
FCFIX
CRF2
CETH2
SQTH2
Range of Registers Controlled by AUTOSTANDARD Function (address 23 Hex to 3C Hex)
CRF1
CETH1
SQTH1
S
S
2
C Address and Protocol
Name
80
80
A
A
Addr.
(Hex)
3D
10
11
12
14
15
16
17
18
19
20
21
22
3E
3F
A
B
C
D
E
2
3
4
5
6
7
8
9
F
SUB-ADDRESS
SUB-ADDRESS
0001 1101
0001 1101
0001 1000
0000 1000 IF Switch
0010 0010
0000 0000
0001 1111
1010 0101
1000 1000
0001 0001 agc-cmd*
0100 00xx
1000 1000
0000 0011
0000 0000
0110 1110
0001 0001
0000 0000
0011 0101
0011 1100
0000 0000
0011 0101
0011 1100
read only
read only
read only
read only
read only
read only
read only
Reset
(Bin)
iagc-off*
mute ov
fm2-car
std-det
nic-det
mout1
dif-pol
bit 7
A
A
0
0
0
0
0
0
Time 2 setting (1280ms)
Switch off
P
mono ov unmute
DATA
Thresh-Sig [3:0]
fm2-sq
f-mute
AGC
bit 6
sid1
demod mode M2:M0*
0
0
0
0
0
0
0
S
Clock Generator Fine Frequency (8 lsb’s)
S1 o/p select
Channel 2 Carrier Recovery Frequency
Channel 1 Carrier Recovery Frequency
fm1-car
Register Function /Description
bit 5
gain
LOA
sid0
TSCTRL [1:0]
A
81
0
0
0
0
0
Channel 2 squelch-th [7:0]
Channel 1 squelch-th [7:0]
Channel 2 carrier-th [7:0]
Channel 1 carrier-th [7:0]
agc-err [4:0]
FM DC level 1
FM DC level 2
aomute
demoff
fm1-sq
Iagc-Ctrl [7:0]
Iagc-ref [7:0]
DATA
A
C4 ov
Clock Generator Coarse Frequency
bit 4
error [7:0]
0
0
agc-ref [2:0]
DATA
am-mono
Nicam CBI [4:1]
qpsk-lk
mute *
mout0
bit 3
Nicam Prescale [4:0]
ECT
A
0
Fm Prescale [4:0]
clock gen fine freq (4 msb’s)
Time 1 setting (160ms)
Line Inputs Gain [3:0]
standard check [3:0]
Thresh-ST [3:0]
P
zw-det
A
MAE
bit 2
SWD [2:0] (monitor)
S2 o/p select
Iagc-cst[2:0]
SWD [2:0] *
DATA
sig-ovr sig-und
zw-st
bit 1
agc-cst[1:0]
0
n-mute
zw-dm
bit 0
0
N