Panasonic SA-XR55PC, Service Manual

Page: 108 / 129

16.1. IC6801 (C2BBGF000669):
Microprocessor
Pin
No.
Mark I/O Function
1 N.C. - No Connection
2 DC_DET I DC Short Detection
3 N.C. - No Connection
4 N.C. - No Connection
5 N.C. - No Connection
6 N.C. - No Connection
7 REQS I/O Communication to Sub µP : Request
from Sub µP
8 REQM I/O Communication to Sub µP : Request
from Main µP
9 M_CK I/O Communication to Main µP : Clock
10 M2S_DT O Communication to Main µP : Serial
Output
11 S2M_DT I Communication to Main µP : Serial
Input
12 F_BUSY I/O BUSY control for µP ROM Writing
13 F_CK I To rewrite µP ROM : CLOCK
14 V_A I Video Selector Control : A
15 F_DA I To rewrite µP ROM : DATA
16 V_B I Video Selector Control : B
17 REMOTE I Remote Control Signal Input
18 CNVSS
(VPP)
- 12V supply to rewrite Flash ROM
19 RESET I Reset Input
20 HOLD I Power Failure Detection
21 V_C I Video Selector Control :C
22 XIN I/O 10MHz Connect to Oscillator
23 XOUT I/O 10MHz Connect to Oscillator
24 VSS - Connect to GND
25 AF_MT O MUTE for AF
26 BI_AMP O BI-AMP RELAY
27 SUBW_MT O MUTE for SUBWFR
28 VCR_REC I VCR REC_MUTE control
29 N.C. - No Connection
30 N.C. - No Connection
31 N.C. - No Connection
32 TAPE_REC - TAPE REC OUT MUTE
33 SP_B O B Speaker Relay Control
34 POWER
_RLY
O Power Relay Control
35 M_RESET O RESET signal for sub µP
36 BEAT_PRF O BEAT PROOF Control Output
37 SP_A O A Speaker Relay Control
38 N.C. - No Connection
39 RDS_CK - RDS IC Control : Clock
40 RDS_DI - RDS IC Control : Data
41 INIT_IN1 I Initialize Setting Input 1
42 INIT_IN2 I Initialize Setting Input 2
43 TUN_SD I SD Input for Tuner
44 TUN_DI/ST I IF data/Stereo detect input for Tuner
Control
45 TUN_CE O CE Output for tuner
46 SEL/TN/
DA_CK
I/O Input Selector and Tuner Control :
Clock
47 SEL/TN/
DA_DT
I Input Selector and Tuner Control :
Data
48 SEL_ST I/O Input Selector Control : Strobe
49 F_OE O To rewrite µP ROM : ENABLE
50 FL/LED_CK I/O FL & LED Driver Control : Clock
51 FL/LED_DT O FL & LED Driver Control : Data
52 FL_ST O FL Driver Control : Strobe
53 FLD_RST O RESET for FLD driver
Pin
No.
Mark I/O Function
54 DUAL_DRV O DUAL DRIVE control
55 A/D_ATT I/O A/D attenuator Control
56 SHORT
_DET
I Output Short Detection (OVERLOAD)
57 VCC - +5V power supply
58 VREF - VCC Connected
59 AVSS - GND Connected
60 THRM_DET I Thermal Warning Detection
(CLIPPER)
61 SEL_ENC_A I Input Selector Encoder A
62 SEL_ENC_B I Input Selector Encoder B
63 KEY2 I Key input 2
64 KEY1 I Key input 1
16 Terminal Function of ICs
108
SA-XR55P / SA-XR55PC