Samsung ML-920 Service Manual page 134

CIRCUIT DESCRIPTION
No Pin Name
31 Vssi
32 DATA23
33 DATA24
34 Vddp
35 DATA25
36 Vssp
37 DATA26
38 DATA27
39 Vddo
40 DATA28
41 Vsso
42 DATA29
43 DATA30
44 DATA31
45 Vssi
46 LFIA0 / OP4
47 Vddi
48 LFIA1 / OP5
49 LFIB0 / OP6
50 LFIB1 / OP7
51 TnRST
52 TMS
53 TDI
54 TCK
55 TDO
56 AVdd
57 AVin[0]
58 AVin[1]
59 AVss
60 AVssAVin[2]
Repair Manual
3-4
I/O Reset Value
Vss -
I/O Input
I/O "
Vdd -
I/O Input
Vss -
I/O Input
I/O "
Vdd -
I/O Input
Vss -
I/O Input
I/O "
I/O "
Vss -
O H Line Feed Motor Phase A
Vdd -
O H Line Feed Motor Phase /A
O " Line Feed Motor Phase B
O " Line Feed Motor Phase /B
I
I TAP Controller Mode Sel
I
I
O TAP Controller Data Out
Vcca -
I -
I -
Vssa -
I -
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Description
3.3 V Gnd
CPU Data Bus 23
CPU Data Bus 23
5 V
CPU Data Bus 23
5 V Gnd
CPU Data Bus 23
CPU Data Bus 23
5 V
CPU Data Bus 23
5 V Gnd
CPU Data Bus 23
CPU Data Bus 23
CPU Data Bus 23
3.3 V Gnd
3.3 V
TAP Controller Reset
TAP Controller Data In
TAP Controller Clock
Analog 3.3 V
Analog Input 0
Analog Input 1
Analog Gnd
Analog Input 2
PAD
PHBTT8, 8 mA
"
PHBTT8, 8 mA
PHBTT8, 8 mA
"
PHBTT8, 8 mA
PHBTT8, 8 mA
"
"
PHOB4, 4mA
PHOB4, 4mA
"
"
PHIT
PHIT
"
"
PHOB4
PICA
"
PICA
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