Panasonic KX-FT932RU-B / KX-FT932CA-B / KX-FT932UA-B / KX-FT934RU-B / KX-FT934CA-B / KX-FT934UA-B Service Manual ▷ View online
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6.2.1.
General Block Diagram
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KX-FT932RU-B/KX-FT932CA-B/KX-FT932UA-B/KX-FT934RU-B/KX-FT934CA-B/KX-FT934UA-B
6.3.
Control Section
6.3.1.
ASIC (IC1)
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.
at 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.
bank 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.
7. THERMAL HEAD I/F:
Transmits the recorded data to the thermal head.
8. MOTOR I/F:
Controls the transmission motor which feeds the docu-
ment.
Controls the receiving motor which feeds the recording
paper.
ment.
Controls the receiving motor which feeds the recording
paper.
9. OPERATION PANEL I/F:
Serial interface with Operation Panel.
10. I/O PORT:
I/O Port Interface.
11. ANALOGUE UNIT:
Electronic volume for the monitor.
Sends beep tones, etc.
Sends beep tones, etc.
Note*:
This memory is incorporated into the ASIC (IC1) and used for the image processing.
Descriptions of Pin Distribution (IC1)
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
CIS IMAGE SIGNAL INPUT (ATN1)
4
AIN2
A
3.3V
THERMISTOR TEMPERATURE WATCH INPUT
5
AIN3
A
3.3V
LINE VOLTAGE DETECTION SIGNAL INPUT (DCIN)
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
XRAMCS
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 (FTG)
16
F1
O
3.3V
01 SIGNAL OUTPUT FOR CIS (F1)
17
F2/OP
O
3.3V
OUTPUT PORT (HEADON)
18
FR/OP
O
3.3V
OUTPUT PORT (MDMRST)
19
CPC
I
3.3V
INPUT PORT (CPC)
20
RVN
I
3.3V
INPUT PORT (PAPER)
21
IRDATXD/IOP
I
3.3V
INPUT PORT (JAM)
22
IRDARXD/IOP80
O
3.3V
OUTPUT PORT (HSTX MUTE)
23
TXD/IOP
I
3.3V
INPUT PORT (BELL)
24
RXD/IOP
I/O
3.3V
PORT (TELRXEN)
25
XRTS/IOP
I
3.3V
INPUT PORT (PSHORT)
26
XCTS/IOP
I/O
3.3V
PORT (MDMTXEN)
27
VDD (2.5V)
-----
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 (LED ON)
35
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
36
VSS
GND
POWER SOURCE (GND)
37
VSS
GND
POWER SOURCE (GND)
15
KX-FT932RU-B/KX-FT932CA-B/KX-FT932UA-B/KX-FT934RU-B/KX-FT934CA-B/KX-FT934UA-B
38
VDD (3.3V)
-----
POWER SOURCE (+3.3V)
39
MIDAT/IOP
I/O
3.3V
PORT (TONE1EN)
40
MICLK/IOP
O
3.3V
OUTPUT PORT (TONE2EN)
41
MILAT/IOP
I/O
3.3V
PORT (HSRXEN)
42
20KOSC/IOP
O
3.3V
OUTPUT PORT (PWRCNT)
43
XWAIT
I
3.3V
INPUT PORT (HOOK)
44
HSTRD/IOP
I
3.3V
INPUT PORT (TEST)
45
HSTWR/IOP
O
3.3V
OUTPUT PORT (BLEEDER_ON)
46
XOPRBE
O
3.3V
OUTPUT PORT (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 ROW ADDRESS STROBE (RAS)
63
XCAS1/IOP
O
3.3V
DRAM COLUMN ADDRESS STROBE (CAS)
64
XCAS2/IOP
I
3.3V
PORT (SPMUTE)
65
XRESCS2
O
3.3V
FLASH CHIP SELECT (XRESCS2)
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)
-----
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
FLASH (IC2) 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
OUTPUT PORT (NC)
103
STB1
O
3.3V
STROBE SIGNAL OUTPUT TO THERMAL HEAD
NO.
SIGNAL
I/O
POWER SUPPLIED
VOLTAGE
DESCRIPTION
16
KX-FT932RU-B/KX-FT932CA-B/KX-FT932UA-B/KX-FT934RU-B/KX-FT934CA-B/KX-FT934UA-B
Connection to operation reset circuit
104
STB2
O
3.3V
STROBE SIGNAL OUTPUT TO THERMAL HEAD
105
STB3
O
3.3V
OUTPUT PORT (NC)
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
NOT USED
112
VDD(5V)
-----
POWER SOURCE (+5V)
113
VSS
GND
POWER SOURCE (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 (THDAT)
117
THCLK
O
3.3V
CLOCK OUTPUT FOR DATA TRANSFER (THCLK)
118
THLAT
O
3.3V
PULSE OUTPUT FOR DATA LATCH (THLAT)
119
STBNP
I
3.3V
INPUT PORT (MOT-POS)
120
RM0/IOP
O
3.3V
MOTOR A PHASE
121
RM1/IOP
O
3.3V
MOTOR B PHASE
122
RM2/IOP
O
3.3V
MOTOR /A PHASE
123
RM3/IOP
O
3.3V
MOTOR /B PHASE
124
RXE/IOP
O
3.3V
MOTOR ENABLE
125
TMO
O
3.3V
OUTPUT PORT (NC)
126
VDD (2.5V)
-----
POWER SOURCE (+2.5V)
127
VSS
GND
POWER SOURCE (GND)
128
TM1/IOP
O
3.3V
OUTPUT PORT (ACK_EN)
129
TM2/IOP
O
3.3V
OUTPUT PORT (CISON)
130
TM3/IOP
O
3.3V
OUTPUT PORT (RLY)
131
TXE/IOP
I
3.3V
INPUT PORT (CUT_POS)
132
KSTART
O
3.3V
OPERATION PANEL CONTROL
133
KLATCH
O
3.3V
OPERATION PANEL CONTROL
134
KSCLK
O
3.3V
OPERATION PANEL CONTROL
135
KTXD
O
3.3V
OPERATION PANEL CONTROL
136
KRXD
I
3.3V
OPERATION PANEL CONTROL
137
FMEMCLK/IOP
O
3.3V
OUTPUT PORT (OPRESET)
138
FMEMDI/IOP
O
3.3V
OUTPUT PORT (NC)
139
ADSEL1
O
3.3V
CHANNEL SELECT SIGNAL FOR AIN2
140
VDDA (2.5V)
2.5V
POWER SOURCE (ANALOG +2.5V)
141
VREFB
A
3.3V
A/D CONVERTER'S ZERO STANDARD VOLTAGE
OUTPUT
OUTPUT
142
VCL
A
3.3V
ANALOG PART STANDARD VOLTAGE SIGNAL
143
VREFT
A
3.3V
A/D CONVERTER'S FULL SCALE VOLTAGE OUTPUT
144
VSSA
GND
POWER SOURCE (ANALOG GND)
NO.
SIGNAL
I/O
POWER SUPPLIED
VOLTAGE
DESCRIPTION
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