Xerox WorkCentre Pro 412 Service Manual page 31

No Pin Name
61 AVref
62 nIOCS0
63 nIOCS2/ToneOut
64 nIOCS3/BufferSel
65 Vssi
66 nSELECTIN
67 nFAULT
68 nAUTOFD
69 nINIT
70 SELECT
71 Vddp
72 PERROR
73 BUSY
74 nACK
75 Vssp
76 PD0
77 PD1
78 Vddi
79 PD2
80 PD3
81 Vssi
82 PD4
83 PD5
84 Vddo
85 PD6
86 PD7
87 nSTROBE
88 Vsso
89 RxD1 / CTin[2]
90 TxD1
WorkCentre Pro 412
Launch Issue
I/O Reset Value
I -
O H
O "
O "
Vss -
I -
O H
I -
I -
O L
Vdd -
O L
O "
O H
Vss -
I/O Input
I/O "
Vcca -
I/O Input
I/O "
Vssa -
I/O Input
I/O "
Vdd -
I/O Input
I/O "
I -
Vss -
I -
O H
August 2001
Description
Analog Positve Reference
IO Chipselect 0
IO Chipselect 2 / ToneOut
IO Chipselect 2 / BufferSel
3.3 V Gnd
Select Input
Fault for Error Condition
Auto Feed
Initialization
Parallel Port Select
5 V
Paper Error
Parallel Port Busy
Parallel Port Acknowledge
5 V Gnd
Parallel Port Data 0
Parallel Port Data
3.3 V
Parallel Port Data
Parallel Port Data
3.3 V Gnd
Parallel Port Data
Parallel Port Data
5 V
Parallel Port Data
Parallel Port Data
Data Strobe
5 V Gnd
Uart 1 Rx Data
Uart 1 Tx Data
Circuit Description
PAD
PICA
PHOB4, 4 mA
"
"
PHIL, ST
PHOB8, 8 mA
PHIL, ST
"
PHOB8, 8 mA
PHOB8, 8 mA
PHOB8, 8 mA
PHOB8, 8 mA
PHBTT8, 8 mA
"
for Ring OSC
PHBTT8, 8 mA
"
for Ring OSC
PHBTT8, 8 mA
"
PHBTT8, 8 mA
"
PHIL, ST
PHIL, ST
PHOB4, 4 mA
5-5