3-5
Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
No
Pin Name
I/O
Reset Value
Description
PAD
61
AVref
I
-
Analog Positve Reference
PICA
62
nIOCS0
O
H
IO Chipselect 0
PHOB4, 4 mA
63
nIOCS2/ToneOut
O
"
IO Chipselect 2 / ToneOut
"
64
nIOCS3/BufferSel
O
"
IO Chipselect 2 / BufferSel
"
65
Vssi
Vss
-
3.3 V Gnd
66
nSELECTIN
I
-
Select Input
PHIL, ST
67
nFAULT
O
H
Fault for Error Condition
PHOB8, 8 mA
68
nAUTOFD
I
-
Auto Feed
PHIL, ST
69
nINIT
I
-
Initialization
"
70
SELECT
O
L
Parallel Port Select
PHOB8, 8 mA
71
Vddp
Vdd
-
5 V
72
PERROR
O
L
Paper Error
PHOB8, 8 mA
73
BUSY
O
"
Parallel Port Busy
PHOB8, 8 mA
74
nACK
O
H
Parallel Port Acknowledge
PHOB8, 8 mA
75
Vssp
Vss
-
5 V Gnd
76
PD0
I/O
Input
Parallel Port Data 0
PHBTT8, 8 mA
77
PD1
I/O
"
Parallel Port Data
"
78
Vddi
Vcca
-
3.3 V
for Ring OSC
79
PD2
I/O
Input
Parallel Port Data
PHBTT8, 8 mA
80
PD3
I/O
"
Parallel Port Data
"
81
Vssi
Vssa
-
3.3 V Gnd
for Ring OSC
82
PD4
I/O
Input
Parallel Port Data
PHBTT8, 8 mA
83
PD5
I/O
"
Parallel Port Data
"
84
Vddo
Vdd
-
5 V
85
PD6
I/O
Input
Parallel Port Data
PHBTT8, 8 mA
86
PD7
I/O
"
Parallel Port Data
"
87
nSTROBE
I
-
Data Strobe
PHIL, ST
88
Vsso
Vss
-
5 V Gnd
89
RxD1 / CTin[2]
I
-
Uart 1 Rx Data
PHIL, ST
90
TxD1
O
H
Uart 1 Tx Data
PHOB4, 4 mA
Содержание SF-830
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Страница 180: ...4 19 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 3 OPE Circuit Diagram D9 ...
Страница 181: ...4 20 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 4 Scan Circuit Diagram ...
Страница 187: ...4 26 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 8 PTL Circuit Diagram ...
Страница 188: ...4 27 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 10 Toner_Rx Circuit Diagram ...
Страница 189: ...4 28 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 11 Toner_Tx Circuit Diagram ...
