Panasonic KX-FLB813RU Service Manual ▷ View online
21
KX-FLB813RU
Descriptions of Pin Distribution (IC604)
PIN No.
SIGNAL
I/O
POWER SUPPLY VOLTAGE
EXPLANATION
1
VSS
GND
GND
2
ADR0
I
3.3V
ADDRESS BUS 0
3
ADR1
I
3.3V
ADDRESS BUS 1
4
ADR2
I
3.3V
ADDRESS BUS 2
5
ADR3
I
3.3V
ADDRESS BUS 3
6
ADR4
I
3.3V
ADDRESS BUS 4
7
ADR5
I
3.3V
ADDRESS BUS 5
8
ADR6
I
3.3V
ADDRESS BUS 6
9
ADR7
I
3.3V
ADDRESS BUS 7
10
XCS
I
3.3V
CHIP SELECT INPUT
11
PVREQ
O
3.3V
PRINT DATA INTERFACE
12
PVACK
I
3.3V
PRINT DATA INTERFACE
13
PVDATA0
I
3.3V
PRINT DATA INTERFACE
14
PVDATA1
I
3.3V
PRINT DATA INTERFACE
15
PVDATA2
I
3.3V
PRINT DATA INTERFACE
16
PVDATA3
I
3.3V
PRINT DATA INTERFACE
17
PVCLK
I
3.3V
PRINT DATA INTERFACE
18
3.3V
-
3.3V
POWER SOURCE(3.3V)
19
VSS
-
GND
GND
20
VSSA
A
GND
GND(ANALOG)
21
AIN0
A
3.3V
ANALOG INPUT(THERMISTOR)
22
AIN1
A
3.3V
ANALOG INPUT(THERMISTOR)
23
TONE
A
3.3V
ANALOG OUTPUT(TONE)
24
VDDA
A
3.3V
POWER SOURCE(ANALOG)
25
TEST0
I
3.3V
NOT USED
26
SENCTL0/IOP00
O
3.3V
OUTPUT PORT(POUT_LED)
27
SENIN0/IOP10
I
3.3V
INPUT PORT(POUT)
28
SENIN1/IOP11
O
3.3V
NOT USED
29
SENIN2/IOP12
O
3.3V
NOT USED
30
SENIN3/IOP13
O
3.3V
NOT USED
31
OMT0/OP60
O
3.3V
NOT USED
32
OMT1/OP61
O
3.3V
NOT USED
33
OMT2/OP62
O
3.3V
NOT USED
34
OMT3/OP63
O
3.3V
NOT USED
35
OMT4/OP64
O
3.3V
NOT USED
36
VSS
-
GND
GND
37
3.3V
-
3.3V
POWER SOURCE(3.3V)
38
XIN_PLL
I
3.3V
CRYSTAL(25MHz) INPUT
39
XOUT_PLL
O
3.3V
CRYSTAL(25MHz) OUTPUT
40
TEST1
I
3.3V
NOT USED
41
HTRCTL
O
3.3V
HEATER CONTROL
42
IOP07
I
3.3V
INPUT PORT(HVERR)
43
CHG
O
3.3V
HIGH VOLTAGE CONTROL
44
DEV
O
3.3V
HIGH VOLTAGE CONTROL
45
TRS
O
3.3V
HIGH VOLTAGE CONTROL
46
POLCLK
O
3.3V
LSU CONTROL
47
POLON
O
3.3V
LSU CONTROL
48
XREADY
I
3.3V
LSU CONTROL
49
VDDPLL
PLL
3.3V
POWER SOURCE(PLL)
50
VSSPLL
PLL
GND
GND(PLL)
51
VCNT
PLL
3.3V
PLL INTERFACE
52
R
PLL
3.3V
PLL INTERFACE
53
PO
PLL
3.3V
PLL INTERFACE
54
5V
-
5V
POWER SOURCE(5V)
55
VSS
-
GND
GND
56
XVIDEO
O
5V
LSU CONTROL
57
XAPC
O
5V
LSU CONTROL
58
XLDEN
O
5V
LSU CONTROL
59
XHSYNC
I
5V
LSU CONTROL
60
PWRDWN
O
5V
POWER DOWN CONTROL
61
OPERST
O
5V
OPERATION PANEL CONTROL
62
KTXD
I/O
5V
OPERATION PANEL CONTROL
63
KSCLK
O
5V
OPERATION PANEL CONTROL
64
KSTART
O
5V
OPERATION PANEL CONTROL
65
IOP30
O
5V
NOT USED
22
KX-FLB813RU
66
IOP31
O
5V
NOT USED
67
IOP32
O
5V
NOT USED
68
IOP33
I
5V
NOT USED
69
MILAT/IOP52
O
5V
ANALOG ASIC CONTROL
70
MIDAT/IOP51
O
5V
ANALOG ASIC CONTROL
71
MICLK/IOP50
O
5V
ANALOG ASIC CONTROL
72
VSS
-
GND
GND
73
5V
-
5V
POWER SOURCE(5V)
74
SWCLK/IOP54
O
5V
NOT USED
75
SWDAT/IOP55
O
5V
NOT USED
76
SWLAT/IOP56
O
5V
NOT USED
77
IOP34
O
5V
NOT USED
78
IOP35
O
5V
NOT USED
79
IOP36
O
5V
NOT USED
80
IOP45
O
3.3V
VOLUME CONTROL
81
IOP46
O
3.3V
VOLUME CONTROL
82
IOP47
O
3.3V
VOLUME CONTROL
83
TXD/CSO/IOP40
O
3.3V
NOT USED
84
RXD/CSI/IOP41
O
3.3V
NOT USED
85
RTS/CCLK/IOP42
O
3.3V
NOT USED
86
CTS/CBUSY1/IOP43
O
3.3V
NOT USED
87
CBUSY2/IOP44
O
3.3V
NOT USED
88
SENIN4/IOP14
O
3.3V
NOT USED
89
SENIN5/IOP15
I
3.3V
NOT USED
90
3.3V
-
3.3V
POWER SOURCE(3.3V)
91
VSS
-
GND
GND
92
XIN_22M
I
3.3V
CRYSTAL(22.222MHz) INPUT
93
XOUT_22M
O
3.3V
CRYSTAL(22.222MHz) OUTPUT
94
TEST2
I
3.3V
NOT USED
95
SENIN6/IOP16
I
3.3V
INPUT PORT(TONER)
96
SENIN7/IOP17
I
3.3V
INPUT PORT(PICK)
97
SENCTL1/IOP01
I
3.3V
INPUT PORT(TOPCVR)
98
IOP05
O
3.3V
OUTPUT PORT(ADFMEN)
99
IOP06
O
3.3V
OUTPUT PORT(CRMEN)
100
SMT0/OP70
O
3.3V
SCANNER MOTOR CONTROL
101
SMT1/OP71
O
3.3V
SCANNER MOTOR CONTROL
102
SMT2/OP72
O
3.3V
SCANNER MOTOR CONTROL
103
SMT3/OP73
O
3.3V
SCANNER MOTOR CONTROL
104
SMT4/OP74
O
3.3V
SCANNER MOTOR CONTROL
105
SMT5/OP75
O
3.3V
SCANNER MOTOR CONTROL
106
SMT6/OP76
O
3.3V
SCANNER MOTOR CONTROL
107
SENCTL2/IOP02
O
3.3V
OUTPUT PORT(SEN_LED)
108
VSS
-
GND
GND
109
3.3V
-
3.3V
POWER SOURCE(3.3V)
110
SENIN8/IOP20
I
3.3V
INPUT PORT(CRG)
111
SENIN9/IOP21
I
3.3V
INPUT PORT(RPS)
112
SENIN10/IOP22
I
3.3V
INPUT PORT(REGIST)
113
SENIN11/IOP23
I
3.3V
INPUT PORT(PSTART)
114
SENCTL3/IOP03
O
3.3V
OUTPUT PORT(DOCU_LED)
115
SENIN12/IOP24
I
3.3V
INPUT PORT(DOCU)
116
SENIN13/IOP25
I
3.3V
NOT USED
117
SENIN14/IOP26
I
3.3V
INPUT PORT(ADFCVR)
118
SENIN15/IOP27
I
3.3V
NOT USED
119
PMT0/LD
I
3.3V
ENGIN MOTOR CONTROL
120
PMT1/SS
O
3.3V
ENGIN MOTOR CONTROL
121
PMT2/DCCLK
O
3.3V
ENGIN MOTOR CONTROL
122
PMT3/BREAK
O
3.3V
ENGIN MOTOR CONTROL
123
PMT4
O
3.3V
NOT USED
124
IOP04/EXTCLK
I
3.3V
ENGIN MOTOR CONTROL
125
XRESET
I
3.3V
RESET INPUT
126
3.3V
-
3.3V
POWER SOURCE(3.3V)
127
VSS
-
GND
GND
128
VDDRTC
-
3.3V/BAT
POWER SOURCE(3.3V/BATT)
129
PWRCTL
I
3.3V/BAT
RESET INPUT
130
XIN_RTC
I
3.3V/BAT
CRYSTAL(32.768KHz) INPUT
131
XOUT_RTC
O
3.3V/BAT
CRYSTAL(32.768KHz) OUTPUT
132
VSSRTC
-
GND
GND
PIN No.
SIGNAL
I/O
POWER SUPPLY VOLTAGE
EXPLANATION
23
KX-FLB813RU
6.3.2.
RTC BACKUP CIRCUIT
1. Function
This unit has a lithium battery (BAT600) which works for the Real Time Clock IC (RTC: inside IC604).
The RTC continues to work, backed up by a lithium battery even when the power switch is OFF.
The RTC continues to work, backed up by a lithium battery even when the power switch is OFF.
2. RTC Inside (IC604) Backup Circuit Operation
When the power switch is turned ON, power is supplied to the RTC (inside IC604). At this time, the voltage at pin 128 of the
IC604 is +3.3V. When the power switch is turned OFF, the BAT600 supplies power to RTC through DA600.
When the power switch is OFF and the voltage of +3.3V decreases, pin 128 of RTC (IC604) becomes roughly the same volt-
age as the battery voltage. RTC goes into the backup mode, in which the power consumption is lower.
IC604 is +3.3V. When the power switch is turned OFF, the BAT600 supplies power to RTC through DA600.
When the power switch is OFF and the voltage of +3.3V decreases, pin 128 of RTC (IC604) becomes roughly the same volt-
age as the battery voltage. RTC goes into the backup mode, in which the power consumption is lower.
133
XINTOUT
O
3.3V
INTERRUPT OUTPUT
134
XRD
I
3.3V
RD SIGNAL
135
XWR
I
3.3V
WR SIGNAL
136
DB0
I/O
3.3V
DATA BUS 0
137
DB1
I/O
3.3V
DATA BUS 1
138
DB2
I/O
3.3V
DATA BUS 2
139
DB3
I/O
3.3V
DATA BUS 3
140
DB4
I/O
3.3V
DATA BUS 4
141
DB5
I/O
3.3V
DATA BUS 5
142
DB6
I/O
3.3V
DATA BUS 6
143
DB7
I/O
3.3V
DATA BUS 7
144
3.3V
-
3.3V
POWER SOURCE(3.3V)
PIN No.
SIGNAL
I/O
POWER SUPPLY VOLTAGE
EXPLANATION
24
KX-FLB813RU
6.3.3.
MODEM CIRCUIT OPERATION
The modem (IC607) has all the hardware satisfying the CCITT standards mentioned previously.
When the SOC (IC600) is brought to a low level, the modem (IC607) is chip-selected and the resistors inside IC are selected by the
select signals from SOC (IC600) A[0]-A[5]. Commands are written through the data bus, and all processing is controlled by the SOC
(IC600) according to CCITT procedures. Here, the INT signal dispatched from IRQ (pin 1 of IC607) to the SOC (IC600) implements
post processing.
This modem (IC607) has an automatic application equalizer. With training signal 1 or 2 at the time of G3 reception, it can automati-
cally establish the optimum equalizer. The modem (IC607) operates using the 28.224MHz clock (X604).
Facsimile Transmission/DTMF Line Send
The digital image data on the data bus is modulated in the modem (IC607), and sent from pin 25, 26 via modem IC607, Analog gate
array IC209(24
When the SOC (IC600) is brought to a low level, the modem (IC607) is chip-selected and the resistors inside IC are selected by the
select signals from SOC (IC600) A[0]-A[5]. Commands are written through the data bus, and all processing is controlled by the SOC
(IC600) according to CCITT procedures. Here, the INT signal dispatched from IRQ (pin 1 of IC607) to the SOC (IC600) implements
post processing.
This modem (IC607) has an automatic application equalizer. With training signal 1 or 2 at the time of G3 reception, it can automati-
cally establish the optimum equalizer. The modem (IC607) operates using the 28.224MHz clock (X604).
Facsimile Transmission/DTMF Line Send
The digital image data on the data bus is modulated in the modem (IC607), and sent from pin 25, 26 via modem IC607, Analog gate
array IC209(24
→22), amplifier IC204(6→7) and the NCU section to the telephone line.
Refer to CHECK SHEET(P.165).
Facsimile Reception
The analog image data which is received from the telephone line passes through the NCU section and enters pin 29 of the modem
(IC607). The signals that enter pin 29 of the modem (IC607) are demodulated in the board to digital image signals, then placed on
the data bus.
In this case, the image signals from the telephone line are transmitted serially. Hence, they are placed on the bus in 8 bit units.
Here, the internal equalizer circuit reduces the image signals to a long-distance receiving level.
This is designed to correct the characteristics of the frequency band centered around 3 kHz and maintain a constant receiving sen-
sitivity.
It can be set in the service mode.
Refer to CHECK SHEET(P.165).
The analog image data which is received from the telephone line passes through the NCU section and enters pin 29 of the modem
(IC607). The signals that enter pin 29 of the modem (IC607) are demodulated in the board to digital image signals, then placed on
the data bus.
In this case, the image signals from the telephone line are transmitted serially. Hence, they are placed on the bus in 8 bit units.
Here, the internal equalizer circuit reduces the image signals to a long-distance receiving level.
This is designed to correct the characteristics of the frequency band centered around 3 kHz and maintain a constant receiving sen-
sitivity.
It can be set in the service mode.
Refer to CHECK SHEET(P.165).
Busy/Dial Tone Detection
The path is the same as FAX receiving. When it is detected, the carrier detect bit of the resistor in the modem (IC607) becomes 1,
and this status is monitored by SOC (IC600).
The path is the same as FAX receiving. When it is detected, the carrier detect bit of the resistor in the modem (IC607) becomes 1,
and this status is monitored by SOC (IC600).
Call Tone Transmission
This is the call signal which is generated the ASIC (IC604) and sent to the speaker.
This is the call signal which is generated the ASIC (IC604) and sent to the speaker.
Click on the first or last page to see other KX-FLB813RU service manuals if exist.