Panasonic KX-FT25LA, Service Manual

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Pin No. Pin Name Buffer Power Supply Description Digital I/O
30 TONE1 3.3V TONE1 (Analog output) TONE1
31 TONE2 3.3V TONE2 (Analog output) TONE2
32 VOLU1 (3.3V) Electronic volume REF for speaker EVOL REF
33 VOLU2 (3.3V) Electronic volume OUT for speaker EVOL OUT
34 VOLU3 (3.3V) Electronic volume IN for speaker EVOL IN
35 MILAT/IOP47 5V Cross point IC/Input output port selection H/SRXENB O
36 XNMI/XINT 5V NMI/INT Input port selection +5V
37 FMEMDO/IOP26 5V Flash memory/Input output port selection ALE (FLASH) O
38 FMEMDI/IOP25 5V Flash memory/Input output port selection FCE (FLASH) O
39 FMEMCLK/IOP24 5V Flash memory/Input output port selection R/B (FLASH) I
40 VSS Ground GND
41 5V Power supply for buffer +5V
42 20KOSC/IOP56 5V 20kHz clock output/input output port selection CLE (FLASH) O
43 XWAIT/IP60 5V Input port/XWAIT output at external CPU mode HOOK I
44 XHSTRD/IOP40 5V CS*RD/input output port selection FRD (FLASH) O
45 XHSTWR/IOP41 5V CS*WR/input output port selection FWR (FLASH) O
46 XOPRBE/ 5V OPRBE/DRAM address multiplex control/output port SP-MUTE O
MUX/OP53
47 ADR15 5V Address pin for debug OPEN
48 ADR14 5V Address pin for debug OPEN
49 ADR13 5V Address pin for debug OPEN
50 3.3V Power supply for internal logic +3.3V
51 XOUT 3.3V 24MHz crystal XOUT O
52 XIN 3.3V 24MHz crystal XIN I
53 VSS Ground GND
54 5V Power supply for buffer +5V
55 XTEST 5V 24MHz clock output XTEST O
56 TEST1 5V Test pin. fixed High +5V
57 TEST2 5V Test pin. fixed High +5V
58 TEST3 5V Test pin. fixed High +5V
59 TEST4 5V Test pin. fixed High +5V
60 XMDMINT 5V MODEM interrupt XMDMINT O
61 XMDMCS 5V MODEM chip selection XMDMCS O
62 VSS Ground GND
63 3.3V Power supply for internal logic 3.3V
64 XRAS/IOP42 5V RAS/input output port selection XMDMRST O
65 XCAS1/IOP43 5V CAS of DRAM1/input output port selection MDMCSBR O
66 XCAS2/IOP44 5V CAS of DRAM2/input output port selection BELL I
67 XRESCS2/OP71 5V Chip selection 2/output port selection RLY O
68 DB3 5V Data bus D3 I/O
69 DB2 5V Data bus D2 I/O
70 DB4 5V Data bus D4 I/O
71 DB1 5V Data bus D1 I/O
72 DB5 5V Data bus D5 I/O
73 DB0 5V Data bus D0 I/O
74 DB6 5V Data bus D6 I/O
75 VSS Ground GND
76 3.3V Power supply for internal logic +3.3V
77 DB7 5V Data bus D7 I/O
78 XROMCS 5V ROM chip selection XROMCS O
79 XRD 5V Read pulse output /RD O
80 XWR 5V Write pulse output /WR O
81 VSS Ground GND
82 5V Power supply for buffer +5V
83 ADR0 5V Address bus A0 O
84 ADR1 5V Address bus A1 O
85 ADR2 5V Address bus A2 O
86 ADR3 5V Address bus A3 O
87 ADR4 5V Address bus (also used as DRAM address) A4 O
88 ADR5 5V Address bus (also used as DRAM address) A5 O
89 ADR6 5V Address bus (also used as DRAM address) A6 O
90 ADR7 5V Address bus (also used as DRAM address) A7 O
91 ADR8 5V Address bus A8 O
92 ADR9 5V Address bus A9 O
93 ADR10 5V Address bus A10 O
94 ADR11 5V Address bus A11 O
95 ADR12 5V Address bus (SRAM can´t be used.) A12 O
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KX-FT25LA