Upd784975Agf304 (Ic810) : Main Micon - JVC HX-Z1 Service Manual

5.10 UPD784975AGF304 (IC810) : Main micon

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