– 47 –
Pin No.
Pin Name
I/O
Function
53
RXQP
I
Receive data (Q positive) input from the RF unit
54
RXQN
I
Receive data (Q negative) input from the RF unit
55
NC
—
Not used (open)
56
IBIAS
I
Analog bias input terminal
57
AGND
—
Analog ground terminal
58
BATTERY
I
Battery voltage detection input terminal
59
AFC
O
Not used (open)
60
AGC
O
Auto gain control signal output to the RF unit
61
CALLER-ID
O
Not used (open)
62
PARKP
I
Charge detection input terminal “L”: charge on
63
VDDC
—
Power supply terminal (+5V) (for core)
64
VSSP
—
Ground terminal (for pad)
65
SYNDATA
O
Synthesizer data output to the RF unit
66
SYNTH5MCLK
O
Synthesizer reference oscillator output to the RF unit (9.62 MHz)
67
LCDRS
O
Register selection signal output for the liquid crystal display
“L”: instruction register, “H”: data register Not used (open)
68
LED4
O
LED drive signal output terminal “L”: LED on Not used (open)
69
JOG (A)
I
70
JOG (B)
I
71
SYNCLK
O
Synthesizer clock signal output to the RF unit
72
SYNSTB
O
Synthesizer strobe signal output to the RF unit
73
VDDP
—
Power supply terminal (+5V) (for pad)
74
VSSP
—
Ground terminal (for pad)
75
SYNEN
O
Synthesizer power control signal output to the RF unit “H”: enable
76
NVDI
I/O
Two-way data bus with the EEPROM (IC502)
77
NVDO
O
Clock signal output to the EEPROM (IC502)
78
LCDRW
O
Data read/write selection signal output for the liquid crystal display
“L”: data write, “H”: data read Not used (open)
79
TXEN
O
TX system enable signal output to the RF unit “H”: enable
80
TXPWR1
O
PA power selection signal output to the RF unit
81
GPIOB6
O
Not used (open)
O
TX/RX selection signal output to the RF unit “L”: RX, “H”: TX
I
RING on/off switch (S501) input terminal “L”: ringer off, “H”: ringer on
I
Setting terminal for the base/handset selection
“L”: base unit, “H”: handset unit (CMOS receiver with pull-up)
O
PA power selection signal output to the RF unit
O
Not used (open)
O
Muting control signal output for the speaker amplifier “H” active Not used (open)
O
LED drive signal output of the TALK/BATT LOW LED (D501) “L”: LED on
—
Power supply terminal (+5V) (for core)
91
VSSC
—
Ground terminal (for core)
92
LCDPWRP
O
Power on/off control signal output for the liquid crystal display
“L”: power on, “H”: power off Not used (open)
93
SLEEP
O
Not used (open)
94
GPIOB4
O
Not used (open)
95
NVCLK
O
Not used (open)
96
RESETI
I
System reset signal input from the reset signal generator (IC301) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
Jog dial pulse input of the rotary encoder Not used (open)
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