JVC HX-Z1, Service Manual

Page: 43 / 54

HX-Z1
43
5.10 UPD784975AGF304 (IC810) : Main micon
• Pin layout
• Pin function
Pin No. Name I/O Function Pin No. Name I/O Function
1 AVDD - AD VDD, same as VDD1 36 SPI A I/O SPI A data
2 SPIDTI I SPI analog input 37 SPI B I/O SPI B data
3 MSI I Music scan input 38 SPI C I/O SPI C data
4 MPX I Tuner stereo indicator 39 PBMUTE I/O Playback mute
5 H/P I SW vol IC btw bi-amp & dyn & off relay 40 VSS0 -
6 KEY1 I Key 1 input 41 VDD0 -
7 KEY2 I Key 2 input Key 3 input 42 RESET I Micom reset
8 KEY3 I Key 3 input 43 INH I/O Back-up mode detect
9 VOL- I Volume decrease 44 LATCH I/O Latch for vol IC
10 VOL+ I Volume increase 45 VOLCK I/O Volume clock
11 SLCPLAY I SLC detect play 46 VOLDA I/O Volume data
12 SLCKEY I SLC key input 47 RELAY I/O Relay out
13 PHOTO A I SLC photo A 48 POUT I/O Power on
14 AVSS - AD VDD, same as VSS1 49 ECON I/O Ecology mode
15 VSS1 - GND 50 PRT I/O Protector in
16 X1 I Oscillation 51 AUXMUTE O Auxmute
17 X2 - Oscillation 52 TUCE O Tuner chip enable
18 VDD1 - 53 O Available pin
19 IC(VPP) - Connect to VSS1 54 O Available pin
20 VC3RESET I/O VC3 reset 55 EXTDA O External IC data
21 MSTAT I/O VC3 status input 56 EXTCK O External IC clock
22 KCMND I/O VC3 KCMND(serial data) 57 EXTCE O External IC strobe
23 RDS DATA I/O RDS data 58 OEEXT O Output enable for external IC
24 RDS CK INT RDS clock 59 VOLLED I/O Volume led
25 BUZZER I/O Buzzer on 60 FSEARCH I/O Forward skip
26 REMIN INT Remocon input 61 RSEARCH I/O Reverse skip
27 SMUTE I/O System mute 62~78 S21~S5 I/O FL segment
28 SLCCE I/O SLC chip enable 79 VDD2 I/O
29 CK I/O SLC / tuner clock 80 VLOAD I/O Negative power supply(-30V)
30 DATA OUT I/O SLC / tuner data out 81~84 S4~S1 I/O FL segment
31 DATA IN I/O Tuner data in 85~100 G16~G1 I/O FL display grid
32 SM- I/O Soundmode reverse
33 SM+ I/O Soundmode forward
34 ECHO1 I/O Echo 1 data
35 ECHO2 I/O Echo 2 data