Onkyo TX-DS797 Service Manual page 14

SUBMICROPROCESSOR
Terminal Descriptions
No, Function I/O Descriptions
1 FLOSDDA O Serial data output pin for FL tube driver and OSD IC.
2 FLOSDCL O Serial clock output pin for FL tube driver and OSD IC.
3 OSDCS O Chip select output pin for OSD IC
4 FLCS O Chip select output pin for FL tube driver
5 MAININ I Signal input pin from remote control
6 REMIN I Signal input pin from external remote control
7 Z2RIN I Signal input pin from remote control of zone 2.Not used.
8 VSS Power supply pin
10 VDDA O Serial data output pin for video function switch IC
11 VDCL O Serial clock input pin for video function switch IC
12 RESET I System reset input.
13 XOUT O Connect the ceramic oscillator 16MHz.
14 VSS Ground pin
15 XIN I Connect the ceramic oscillator 16MHz.
16 VCC Power supply pin. Apply 5V.
20 VSYNC I Vertical synchronizing signal input pin.
24 PURE O Pure audio relay control output pin. Not used.
29 232RX I Receiving input pin of RS232C. Not used.
30 232TX O Sending output pin of RS232C.Not used..
31 TXD1 O Rewrite sending output pin to flash IC.
32 RXD1 I Rewrite receiving input pin from flash IC.
33 CLK1 I Rewrite clock input pin from flash IC.
34 RTS1 O Rewrite response output pin to flash IC.
35 SUBSO O Data sending output pin to communicate between microprocessors.
36 MAINSO I Data receiving input pin to communicate between microprocessors.
37 MAINCL I Clock receiving input pin to communicate between microprocessors.
38 SUBREQ O Request signal output pin to communicate between microprocessors.
39 VAJ I Pulse signal input terminal A pin from rotary encoder.
40 VBJ I Pulse signal input terminal B pin from rotary encoder.
42 RZV2 O Video 2 indicator output pin.
43 RZV3 O Video 3 indicator output pin.
45 RZV4 O Video 4 indicator output pin.
47 RZV5 O Video 5 indicator output pin.
48 RZV1 O Video 1 indicator output pin.
49 LEDRED O Power supply control output pin for recording indicator.
No, Function I/O Descriptions
50 LEDGRE O Power supply control output pin for zone 2 indicator
51 RZTP O Tape indicator output pin.
52 RZAM O AM indicator output pin.
53 RZFM O FM indicator output pin.
54 RZPH O Phono indicator output pin.
55 RZCD O CD indicator output pin.
58 UPSPL O Upsampling frequency indicator control output pin
58 PURE O Pure audio indicator output pin.
59 RZDVD O DVD indicator output pin.
60 STBY O STANDBY/RECEIVED indicator output pin.
62 VCC Power supply pin. Apply 5V.
63 VDST O Strobe output pin for video switch control output pin
64 VSS Power supply pin. Connect to ground.
71 HPDET I Headphone detect5ion input pin.
72 SYSOUT O System code output pin
75 SYSIN I System code input pin.
76 AREA1 I Initializing input pin for band aria.
77 AREA2 I Initializing input pin for band aria.
79 SUBPOFF I Power failure intercept input pin between microprocessors.
80 MAINREQ I Request input to communicate data between microprocessors.
82 SYNCDET I External synchronizing detection input pin.
84 ISS I S video signal detection input pin.
86 FLRES O Reset signal output pin to the FL tube driver IC.
89 RDS I Initializing input pin for RDS broadcast.
90 AMP I Initializing input pin for model
91 12V I Initializing input pin for 12V trigger.
92 NTSC I Initializing input terminal for NTSC/PAL.
93 K3 I Operation key connection pin.
94 K2 I Operation key connection pin.
95 K1 I Operation key connection pin.
96 VSS Power supply pin for A/D converter.
97 K0 I Operation key connection pin.
98 VREF Reference voltage input pin for A/D converter.
99 VCC Power supply pin for A/D converter. Apply 5V.
TX-DS797