Philips Colour Television Service Manual page 98

EN 98 9. DPTV585 AA
9.5.4 I2C interconnect
90 TXD
RXD
89
88
SDA-F
87
SCL-F
3709
7001
100
OTC
4
7713
PICNIC
SN-DA
1
26
7718
FALCONIC
1020
86 48
SDA-S
85
49
SCL-S
The OTC communicates with the set via three I2C busses.
SDA-F, Fast bus communicates with the PICNIC, HIP, and
MSP (Audio Processor). The SN-DA line from the PICNIC
communicates with the FALCONIC and EAGLE. The SDA-S
Slow bus communicates with the Tuner, AV Switch, and
ComPair connector on the SSM. It also communicates with the
PIP-DW board.
The TXD and RXD lines communicate with the microprocessor
on the ACS module. The microprocessor on the ACS
communicates with the GDE NVM, Convergence Processor,
and the HOP panel.
9.5.5 On-Screen Display
Figure 9-45 On-Screen Display
Signal for the OSD (On-Screen Display) comes from three
different sources. IC 7001, which is located on the SSB (Small
Signal Board), generates all of the customer menus except for
Convergence.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
SSB
3655
3710 3376 3656
3377
100
100 100 100
100
46 47 1 2
5
7323 7651
MSP
HIP
SN-CL
2
9741-C
10
9741-D
32
27 26
10
7724
EAGLE
3115 3114
47 47
4
5
1 2 3
1203
TUNER
COMPAIR
Figure 9-44 I2C interconnect
E_15000_114.eps
ACS
1401
1043 1000
2 1 1
7100
4 2 ACS
2
MICRO
83 84
1000
6
4
SDA-C
SCL-C
SSM
PIP/DW PANEL
0201
1201
1
1
2 2
3131 3130
220 220
32
33
7017
AV SW
In the SAM (Service Alignment Mode), the menus are
generated by 7001, except those in the GDE SAM. The GDE
SAM menus are generated by IC 7100 on the ACS module.
The Convergence Alignment menus are generated by 7100,
while the Convergence Alignment grid is generated by IC 7002.
The OSD signals from 7001 on the SSB are fed to the SSM
(Small Signal Module) via connector 1002 and 1043. The OSD
signals from the Convergence Processor, 7002, are buffered
by 7014 through 7017 before being mixed with the signals from
the ACS microprocessor, 7100. They are fed to the SSM via
connector 1000. The signals from the ACS and SSB are mixed
and fed to the HOP panel and HOP IC, 7600, via connector
1610. The HOP IC, 7600, mixes the OSD signal with the video
signal before feeding it to the CRTs.
191004
7022
7002
CONV
PROC
7021 7020
28 SDA-B
7024 7023
13 SCL-B
7000
GDE
NVM
HOP
1950 3955
100
5
7800
I/O
4
3956
100
3965
100
7600
HOP
3966
100
3432 3268
3431 3267 3330
7832 7829
100 100 100 100 100
7403 7801 7201 7301
I/O EXP PIP/DW TUNER SIGNAL PRO
3329 3509
3510
100 100 100
7403
I/O EXP
E_15000_113.eps
181004