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Panasonic KX-FG2452CX Service Manual page 17

2.4 ghz cordless phone system with fax and copier
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NO.
SIGNAL
57
TEST2
58
TEST3
59
TEST4
60
XMDMINT
61
XMDMCS
62
XRAS/IOP42
63
XCAS1/IOP/43
64
XCAS2/IOP44
65
XRESCS2/OP71
66
DB3
67
DB2
68
DB4
69
DB1
70
DB5
71
VDD (3.3V)
72
VSS
73
VSS
74
VDD (3.3V)
75
DB0
76
DB6
77
DB7
78
XROMCS
79
RD
80
WR
81
ADR0
82
ADR1
83
ADR2
84
ADR3
85
ADR4
86
ADR5
87
VSS
88
VDD (2.5V)
89
ADR6
90
ADR7
91
ADR8
92
ADR9
93
ADR10
94
ADR11
95
ADR12
96
RBA0
97
RBA1
98
RBA2
99
RBA3
100
RBA4
101
RBA5/OP
102
RBA6/IOP96
103
STB1
104
STB2
105
STB3
106
XRESET
107
VDD (3.3V)
108
VSS
109
VSS
110
VDD (3.3V)
111
XORESET
112
VDD(5V)
113
VSS
I/O
POWER SUPPLIED
VOLTAGE
I
3.3V
I
3.3V
I
3.3V
I
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
I/O
3.3V
I/O
3.3V
I/O
3.3V
I/O
3.3V
I/O
3.3V
-----
GND
GND
-----
I/O
3.3V
I/O
3.3V
I/O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
GND
-----
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
O
3.3V
I
3.3V
-----
GND
GND
-----
O
3.3V
-----
GND
17
DESCRIPTION
HIGH FIXED
HIGH FIXED
HIGH FIXED
MODEM INTERRUPT
MODEM CHIP SELECT
DRAM (IC503) ROW ADDRESS STROBE
DRAM (IC503) CULUM ADDRESS STROBE
OUTPUT PORT (CIS ON)
IC504 CHIP SELECT
CPU DATA BUS 3
CPU DATA BUS 2
CPU DATA BUS 4
CPU DATA BUS 1
CPU DATA BUS 5
POWER SOURCE (+3.3V)
POWER SOURCE (GND)
POWER SOURCE (GND)
POWER SOURCE (+3.3V)
CPU DATA BUS 0
CPU DATA BUS 6
CPU DATA BUS 7
ROM (IC502) CHIP SELECT
CPU RD
CPU WR
CPU ADDRESS BUS 0
CPU ADDRESS BUS 1
CPU ADDRESS BUS 2
CPU ADDRESS BUS 3
CPU ADDRESS BUS 4
CPU ADDRESS BUS 5
POWER SOURCE (GND)
POWER SOURCE (+2.5V)
CPU ADDRESS BUS 6
CPU ADDRESS BUS 7
CPU ADDRESS BUS 8
CPU ADDRESS 9
CPU ADDRESS 10
CPU ADDRESS 11
CPU ADDRESS 12
ROM/RAM BANK ADDRESS 0
ROM/RAM BANK ADDRESS 1
ROM/RAM BANK ADDRESS 2
ROM/RAM BANK ADDRESS 3
ROM/RAM BANK ADDRESS 4
ROM/RAM BANK ADDRESS 5
A19
STROBE SIGNAL OUTPUT TO THERMAL HEAD
STROBE SIGNAL OUTPUT TO THERMAL HEAD
NOT USED
RESET INPUT
POWER SOURCE (+3.3V)
POWER SOURCE (GND)
POWER SOURCE (GND)
POWER SOURCE (+3.3V)
RESET OUTPUT
POWER SOURCE (+5V)
POWER SOURCE (GND)
KX-FG2452CX
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