Panasonic KX-FP343UA Service Manual ▷ View online
7.3.2. MEMORY MAP
121
KX-FP343UA
This custom IC is used for the general FAX operations.
1. CPU:
This model uses a Z80 equivalent to the CPU operating at
12 MHz. Most of the peripheral functions are performed by
custom-designed LSIs. Therefore, the CPU only works for
processing the results.
12 MHz. Most of the peripheral functions are performed by
custom-designed LSIs. Therefore, the CPU only works for
processing the results.
2. RTC:
Real Time Clock
3. DECODER:
Decodes the address.
4. ROM/RAM I/F:
Controls the SELECT signal of ROM or RAM and the bank
switching.
switching.
5. CIS I/F:
Controls the document reading.
6. IMAGE DATA RAM:
This memory is programmed into the ASIC and uses 8 KB
for the image processing. (See Fig. A.*)
for the image processing. (See Fig. A.*)
7. THERMAL HEAD I/F:
Transmits the recorded data to the thermal head.
8. MOTOR I/F:
Controls the transmission motor which feeds the document.
Controls the receiving motor which feeds the recording
paper.
paper.
9. OPERATION PANEL I/F:
Serial interface with Operation Panel.
10. I/O PORT:
I/O Port Interface.
11. ANALOG UNIT:
Electronic volume for the handset and the monitor.
Sends beep tones, etc.
7.3.3. ASIC (IC501)
Fig. A
Note*:
This memory is incorporated into the ASIC (IC501) and used for the image processing.
Fig. A shows the memory map of the Image Data RAM.
122
KX-FP343UA
Descriptions of Pin Distribution (IC501)
NO.
SIGNAL
I/O
POWER SUPPLIED
VOLTAGE
DESCRIPTION
1
VSSA
GND
POWER SOURCE (ANALOG GND)
2
VDDA 3.3
3.3V
POWER SOURCE (ANALOG +3.3V)
3
AIN1
A
3.3V
CCD IMAGE SIGNAL INPUT
4
AIN2
A
3.3V
THERMISTOR TEMPERATURE WATCH INPUT
5
AIN3
A
3.3V
-----------
6
AMON
A
3.3V
ANALOG SIGNAL MONITOR TERMINAL
7
VSS
GND
POWER SOURCE (GND)
8
X32OUT
O
3.3V/BATT
RTC (32.768KHz) CONNECTION
9
X32IN
I
3.3V/BATT
RTC (32.768KHz) CONNECTION
10
VDD (3.3V / B)
-----
POWER SOURCE (+3.3V/LITHIUM BATTERY)
11
XBACEN
I
3.3V/BATT
BACKUP ENABLE
12
XRAMCS
O
3.3V/BATT
NOT USED
13
VDD (3.3V / B)
-----
POWER SOURCE(+3.3V / LITHIUM BATTERY)
14
VDD (2.5V/B)
-----
POWER SOURCE (+2.5V / LITHIUM BATTERY)
15
FTG
O
3.3V
SH SIGNAL OUTPUT FOR CIS (SI)
16
F1
O
3.3V
01 SIGNAL OUTPUT FOR CIS (CLK)
17
F2/OP
O
3.3V
OUTPUT PORT (HSTXMUTE)
18
FR/OP
O
3.3V
OUTPUT PORT (MDMRST)
19
CPC
I
3.3V
INPUT PORT (PTOP)
20
RVN
I
3.3V
INPUT PORT (REED)
21
IRDATXD/IOP
O
3.3V
OUTPUT PORT (CISLED)
22
IRDARXD/IOP80
I
3.3V
INPUT PORT (DSR)
23
TXD/IOP
I
3.3V
INPUT PORT (TXD)
24
RXD/IOP
O
3.3V
OUTPUT PORT (SENLED1)
25
XRTS/IOP
I
3.3V
INPUT PORT (HOOK)
26
XCTS/IOP
O
3.3V
OUTPUT PORT (SPMUTE)
27
VDD (2.5V)
3.3V
POWER SOURCE (+2.5V)
28
TONE1
A
3.3V
TONE OUTPUT
29
TONE2
A
3.3V
TONE OUTPUT
30
VOLUREF
A
3.3V
ANALOG REF VOLTAGE
31
VOLUOUT
A
3.3V
VOLUME OUTPUT
32
VOLUIN
A
3.3V
VOLUME INPUT
33
XNMI
I
3.3V
HIGH FIXED
34
FMEMDO/IOP
O
3.3V
OUTPUT PORT (ON-MREN)
35
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
36
VSS
GND
POWER SOURCE (GND)
37
VSS
GND
POWER SOURCE (GND)
38
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
39
MIDAT/IOP
O
3.3V
OUTPUT PORT (TONE1EN)
40
MICLK/IOP
O
3.3V
OUTPUT PORT (CISON)
41
MILAT/IOP
O
3.3V
OUTPUT PORT (OPERESET)
42
20KOSC/IOP
I
3.3V
INPUT PORT (BELL)
43
XWAIT
I
3.3V
INPUT PORT (KOVER)
44
HSTRD/IOP
O
3.3V
NOT USED
45
HSTWR/IOP
O
3.3V
NOT USED
46
XOPRBE
O
3.3V
MFCS
47
ADR15
O
3.3V
CPU ADDRESS BUS 15 (NOT USED)
48
ADR14
O
3.3V
CPU ADDRESS BUS 14 (NOT USED)
49
ADR13
O
3.3V
CPU ADDRESS BUS 13 (NOT USED)
50
VDD (2.5V)
-----
POWER SOURCE (+2.5V)
51
XOUT
O
3.3V
SYSTEM CLOCK (24MHz)
52
XIN
I
3.3V
SYSTEM CLOCK (24MHz)
53
VSS
GND
POWER SOURCE (GND)
54
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
55
XTEST
O
3.3V
24MHz CLOCK
56
TEST1
I
3.3V
HIGH FIXED
57
TEST2
I
3.3V
HIGH FIXED
58
TEST3
I
3.3V
HIGH FIXED
59
TEST4
I
3.3V
HIGH FIXED
60
XMDMINT
I
3.3V
MODEM INTERRUPT
61
XMDMCS
O
3.3V
MODEM CHIP SELECT
62
XRAS/IOP
O
3.3V
DRAM (IC503) ROW ADDRESS STROBE
63
XCAS1/IOP
O
3.3V
DRAM (IC503) CULUM ADDRESS STROBE
64
XCAS2/IOP
O
3.3V
DRAM(IC503) CHIPSELECT
65
XRESCS2
O
3.3V
GATE ARRAY CHIP SELECT
123
KX-FP343UA
NO.
SIGNAL
I/O
POWER SUPPLIED
VOLTAGE
DESCRIPTION
66
DB3
I/O
3.3V
CPU DATA BUS 3
67
DB2
I/O
3.3V
CPU DATA BUS 2
68
DB4
I/O
3.3V
CPU DATA BUS 4
69
DB1
I/O
3.3V
CPU DATA BUS 1
70
DB5
I/O
3.3V
CPU DATA BUS 5
71
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
72
VSS
GND
POWER SOURCE (GND)
73
VSS
GND
POWER SOURCE (GND)
74
VDD (3.3V)
3.3V
POWER SOURCE (+3.3V)
75
DB0
I/O
3.3V
CPU DATA BUS 0
76
DB6
I/O
3.3V
CPU DATA BUS 6
77
DB7
I/O
3.3V
CPU DATA BUS 7
78
XROMCS
O
3.3V
ROM (IC523) CHIP SELECT
79
RD
O
3.3V
CPU RD
80
WR
O
3.3V
CPU WR
81
ADR0
O
3.3V
CPU ADDRESS BUS 0
82
ADR1
O
3.3V
CPU ADDRESS BUS 1
83
ADR2
O
3.3V
CPU ADDRESS BUS 2
84
ADR3
O
3.3V
CPU ADDRESS BUS 3
85
ADR4
O
3.3V
CPU ADDRESS BUS 4
86
ADR5
O
3.3V
CPU ADDRESS BUS 5
87
VSS
GND
POWER SOURCE (GND)
88
VDD (2.5V)
-----
POWER SOURCE (+2.5V)
89
ADR6
O
3.3V
CPU ADDRESS BUS 6
90
ADR7
O
3.3V
CPU ADDRESS BUS 7
91
ADR8
O
3.3V
CPU ADDRESS BUS 8
92
ADR9
O
3.3V
CPU ADDRESS 9
93
ADR10
O
3.3V
CPU ADDRESS 10
94
ADR11
O
3.3V
CPU ADDRESS 11
95
ADR12
O
3.3V
CPU ADDRESS 12
96
RBA0
O
3.3V
ROM/RAM BANK ADDRESS 0
97
RBA1
O
3.3V
ROM/RAM BANK ADDRESS 1
98
RBA2
O
3.3V
ROM/RAM BANK ADDRESS 2
99
RBA3
O
3.3V
ROM/RAM BANK ADDRESS 3
100
RBA4
O
3.3V
ROM/RAM BANK ADDRESS 4
101
RBA5
O
3.3V
ROM/RAM BANK ADDRESS 5
102
RBA6/IOP96
O
3.3V
A19
103
STB1
O
3.3V
STROBE SIGNAL OUTPUT TO THERMAL HEAD
104
STB2
O
3.3V
STROBE SIGNAL OUTPUT TO THERMAL HEAD
105
STB3
O
3.3V
NOT USED
106
XRESET
I
3.3V
RESET INPUT
107
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
108
VSS
GND
POWER SOURCE (GND)
109
VSS
GND
POWER SOURCE (GND)
110
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
111
XORESET
O
3.3V
RESET OUTPUT
112
VDD(5V)
3.3V
POWER SOURCE (+5V)
113
VSS
GND
POWER SOURCE (ANALOG GND)
114
XRESETI
I
3.3V
RESET INPUT
115
WDERR
O
3.3V
WATCHED ERROR OUTPUT SIGNAL
116
THDAT
O
3.3V
RECORDED IMAGE OUTPUT
117
THCLK
O
3.3V
CLOCK OUTPUT FOR DATA TRANSFER
118
THLAT
O
3.3V
PULSE OUTPUT FOR DATA LATCH
119
STBNP
I
3.3V
INPUT PORT (TEST)
120
RM0/IOP
O
3.3V
RX MOTOR A PHASE
121
RM1/IOP
O
3.3V
RX MOTOR B PHASE
122
RM2/IOP
O
3.3V
RX MOTOR /A PHASE
123
RM3/IOP
O
3.3V
RX MOTOR /B PHASE
124
RXE/IOP
O
3.3V
RX MOTOR ENABLE SIGNAL
125
TMO
O
3.3V
TX MOTOR A PHASE
126
VDD (2.5V)
3.3V
POWER SOURCE (+2.5V)
127
VSS
GND
POWER SOURCE (GND)
128
TM1/IOP
O
3.3V
TX MOTOR B PHASE
129
TM2/IOP
O
3.3V
TX MOTOR /A PHASE
130
TM3/IOP
O
3.3V
TX MOTOR /B PHASE
131
TXE/IOP
O
3.3V
TX MOTOR ENABLE SIGNAL
124
KX-FP343UA
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