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11
ICD-P28
5-1. IC PIN DESCRIPTION
• IC702 MB91F233-148 (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
DSPSCK
O
Serial clock signal output to the DSP IC (IC101)
2
FLMCLE
O
Command latch enable signal output to the flash memory IC (IC701)
3 to 10
DATA0 to DATA7
I/O
Data input/output with the flash memory IC (IC701) and USB controller IC (IC8101)
11
XFLMCS0
O
Chip enable signal output to the flash memory IC (IC701)
12
DSPSYSCK
O
System clock control signal output for DSP (IC101)
13
X0A32K
I
32 kHz oscillator pin (32 kHz signal input) (IC703)
14
X1A32K
—
32 kHz oscillator pin
15
VCC3BCK
—
Power supply pin for internal logic back up
16
VSS
—
Ground pin
17
VCC3LGC
—
Internal logic power supply pin
18
BEEP
O
Beep signal output
19
XFLMWE
O
Write enable signal output to the flash memory IC (IC701)
20
XFLMRE
O
Read enable signal output to the flash memory IC (IC701)
21
FLMALE
O
Address latch enable signal output to the flash memory IC (IC701)
22
FLMRB
I
Ready/busy signal input from the flash memory IC (IC701)
23
XFLMWP
O
Write protect signal output to the flash memory IC (IC701)
24 to 30
USBADR0 to 6
O
Address signal output to the USB controller IC (IC8101)
31
XUSBCS
O
Chip select signal output to the USB controller IC (IC8101)
32
XUSBRD
O
Read strob signal output to the USB controller IC (IC8101)
33
XUSBRST
O
Reset signal output to the USB controller IC (IC8101)
34
XUSBLWR
O
Low write strob signal output to the USB controller IC (IC8101)
35
XFLMPWR
O
Power control signal output for flash memory
36
AVSS
—
Power supply pin for analog
37
AVREF
—
Reference power supply pin
38
AVSS
—
Ground pin for analog
39
BATT
I
Battery voltage detection signal input
40
KEYIN0
I
Key 0 A/D input
41
KEYIN1
I
Key 1 A/D input
42
XBATTEN
O
Battery detection control signal output
43 to 45
PC4 to PC6
I
Not used in this set. (Open)
46
LMUTE
O
Mute signal output
47
VSS
—
Ground pin
48
AVCC3IO
—
Power supply pin
49 to 74
SEG0 to SEG25
O
LCD segment signal output to the LCD901
75
DVCC
—
Power supply pin
76
DVSS
—
Ground pin
77 to 82
SEG26 to SEG31
O
LCD segment signal output to the LCD901
83 to 86
COM0 to COM3
O
LCD common signal output to the LCD901
87
MOD2
I
Operation mode signal input
88, 89
MOD1, MOD0
I
Operation mode signal input (Fixed at “L” in this set.)
90
XCPURST
I
CPU external reset signal input to the reset IC (IC704)
91 to 94
LCDV0 to LCDV3
—
LCD reference power supply input pin
95
RX
I
Input/output port (Flash write RX)
96
TX
O
Input/output port (Flash write TX)
97
PO2
O
Not used in this set. (Open)
98
RTCSIN
I
Serial data signal input from the real time clock IC (IC703)
99
RTCSOT
O
Serial data signal output to the real time clock IC (IC703)
100
RTCSCK
O
Serial clock signal output to the real time clock IC (IC703)
101
RTCCS
O
Chip select signal output to the real time clock IC (IC703)
102
XDSPRST
O
Reset signal output to the DSP IC (IC101)
103
WAKEUP
I
Wake up interruption signal input
SECTION 5
DIAGRAMS
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