Aiwa XR-MP50 Service Manual page 38

IC, UPD784216AYGC-107-8EU
Pin No. Pin Name
1 MD2
2 X2FLG
3 DRVMUT
4 CDDAMUT
5 LRMUT
6 DOUTON
7, 8 NC
9 VDD
10, 11 X2, X1
12 VSS
13 XT2
14 XT1
15 RESET
16 DEC-INT
17 HDRQ
18 NC
19 SCOR
20 ~ 22 NC
23 AVDD
24 AVREF0
25 MP1/1.5
26 FB0/FBA
27 ADJ3
28 ~ 32 NC
33 AVSS
34 EQBST
35 EQFRQ
36 AVREF1
37 DEBUG1 (SI2)
38 DEBUG2 (SO2)
39 DEBUG3 (SCK2)
40 I-SD
41 O-SD
42 I-CLK
43 IO-BUSY
44 DECRST
45 I2CD
46 A-MUTE
47 I2CC
48 ~ 55 A0 ~ A7
56 ~ 63 D0 ~ D7
64 ~ 71 A8 ~ A15
I/O
O Digital out ON/OFF control H : ON.
O Not used.
O Servo driver mute.
O CDDA-DAC mute.
– Not used.
– Not used.
– Not connected.
– Power supply (5V).
I/O Oscillator input / output for system clock (12.5MHz).
– Ground.
– Not used.
– Connected to VSS.
I MICON reset.
I Decoder interrupt.
I Decoder data request.
– Not connected.
I SUB-Q SYNC (S0,S1).
– Not connected.
– Power supply (5V).
– Connected to AVDD.
I CLV at MP3 mode, L : 1.5, H : 1. (Connected to VSS)
I L : F Bias Auto. H : F Bias OFF. (Connected to VDD)
– Connected to AVSS.
– Connected to AVSS.
– Ground.
O RF AMP boost control. (Not used)
O RF AMP frequency control. (Not used)
– Connected to AVDD.
– Connected to AVSS.
– Not used.
– Not used.
I Host to unit data.
O Unit to host data.
I Host I/O clock.
I/O I/O / High impedance 3 state.
O ROM decoder (IC, LC89513K) reset.
O IC, MAS3507D-G10 I2C data.
Mute on.
O
O IC, MAS3507D-G10 clock.
O SRAM / decode address.
I/O SRAM / decode data.
O SRAM / decode address.
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Description