Diagrams; Explanation Of Ic Terminals - Sony ICD-R100 Service Manual

4-1. EXPLANATION OF IC TERMINALS

IC704 µ PD780308GC-113-8EU (SYSTEM CONTROL)
Pin No. Pin name
1 KEY0
2 KEY1
3 SPDSW
4 XHOLD
5 HPMUTE
6 PCLE
7 XFMCE
8 VDDO
9 AVREF
10 XFMWE
11 XFMALE
12 VSS1
13 XFMR/B
14 XFMCLE
15 SYNCOUT
16 SYNCMSK
17 XFMRE
18 MSKCLK
19 XFMWP
20 XFMSE
21 BEEP
22 LIGHT
23 – 26 COMO 0–3
27 BIAS
28 – 30 VLC 0 – 2
31 VSS0
32 – 61 S0 – S29
62 XVORSW
63 XVORIN
64 XTEST
65 XDSPDEN
66 LEDREC
67 LEDPB
68 AMPPOW
69 SPOWER
70 RTCCE
71 XPDRST
72 DSPIS
73 DSPIR
74 XBLCK
75 RTCDI
76 RTCDO
77 RTCCLK
78 IC
79 X2
80 X1
SECTION 4

DIAGRAMS

I/O
I Key input
I Key input
I Playback speed switch input.
I Hold switch input.
O Earphone mute output.
O PC link permission signal output.
O CE output for flash memory.
– Power supply terminal.
I A/D reference voltage input.
O Write enable signal output for flash memory.
O ALE signal output.
– Ground.
I Flash memory Ready/Busy signal input.
O CLE signal output for flash memory.
O SYNC signal output.
O SYNC output control signal output.
O Flash memory read enable signal output.
I SYNC output control clock input.
O Flash memory WP signal output.
O Flash memory SE signal output.
O BEEP signal output (2.4kHz).
O LCD back lignt control output.
O LCD common signal output.
– Connect to VCC (LCD BIAS).
– LCD drive power supply.
– Ground.
O LCD segment signal output.
I VOR switch input.
I VOR signal input.
I Test terminal.
O DSP registor control I/F enable signal output.
O REC LED (red) ON/OFF output.
O PLAY LED (green) ON/OFF output.
O Power down control output for IC108.
O IC101 and analog power supply control output.
O Real time colck CE signal output.
O Reset signal output for IC101.
I Serial data input from IC101.
O Playback serial data output for IC101.
O DSP bit clock signal output.
I Real time colck data input.
O RTC data and DSP registor contrl data output.
O RTC I/F data and DSP registor control clock output.
– Ground.
O System clock output (5MHz).
I System clock input (5MHz).
– 7 –
Description