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SECTION 4
DIAGRAMS
4-1. EXPLANATION OF IC TERMINALS
IC704
µ
PD780308GC-113-8EU (SYSTEM CONTROL)
Pin No.
Pin name
I/O
Description
1
KEY0
I
Key input
2
KEY1
I
Key input
3
SPDSW
I
Playback speed switch input.
4
XHOLD
I
Hold switch input.
5
HPMUTE
O
Earphone mute output.
6
PCLE
O
PC link permission signal output.
7
XFMCE
O
CE output for flash memory.
8
VDDO
–
Power supply terminal.
9
AVREF
I
A/D reference voltage input.
10
XFMWE
O
Write enable signal output for flash memory.
11
XFMALE
O
ALE signal output.
12
VSS1
–
Ground.
13
XFMR/B
I
Flash memory Ready/Busy signal input.
14
XFMCLE
O
CLE signal output for flash memory.
15
SYNCOUT
O
SYNC signal output.
16
SYNCMSK
O
SYNC output control signal output.
17
XFMRE
O
Flash memory read enable signal output.
18
MSKCLK
I
SYNC output control clock input.
19
XFMWP
O
Flash memory WP signal output.
20
XFMSE
O
Flash memory SE signal output.
21
BEEP
O
BEEP signal output (2.4kHz).
22
LIGHT
O
LCD back lignt control output.
23 – 26
COMO 0–3
O
LCD common signal output.
27
BIAS
–
Connect to VCC (LCD BIAS).
28 – 30
VLC 0 – 2
–
LCD drive power supply.
31
VSS0
–
Ground.
32 – 61
S0 – S29
O
LCD segment signal output.
62
XVORSW
I
VOR switch input.
63
XVORIN
I
VOR signal input.
64
XTEST
I
Test terminal.
65
XDSPDEN
O
DSP registor control I/F enable signal output.
66
LEDREC
O
REC LED (red) ON/OFF output.
67
LEDPB
O
PLAY LED (green) ON/OFF output.
68
AMPPOW
O
Power down control output for IC108.
69
SPOWER
O
IC101 and analog power supply control output.
70
RTCCE
O
Real time colck CE signal output.
71
XPDRST
O
Reset signal output for IC101.
72
DSPIS
I
Serial data input from IC101.
73
DSPIR
O
Playback serial data output for IC101.
74
XBLCK
O
DSP bit clock signal output.
75
RTCDI
I
Real time colck data input.
76
RTCDO
O
RTC data and DSP registor contrl data output.
77
RTCCLK
O
RTC I/F data and DSP registor control clock output.
78
IC
–
Ground.
79
X2
O
System clock output (5MHz).
80
X1
I
System clock input (5MHz).
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