VIA Technologies Apollo Pro133A Design Manual page 137

1
A
B
C
P_ERROR
P_STROBE
P_AUTOFD
P_SLCTIN
P_INIT
P_PRD0
P_PRD0
P_PRD1
P_PRD1
P_PRD2
P_PRD2
P_PRD3
P_PRD3
P_PRD5
P_PRD5
P_PRD6
P_PRD6
P_PRD7
P_PRD7
P_PRD4
P_PRD4
D
1
2
VCC
U1
20
VCC VCC1
TXD1 16
TXD1 DA1 DY1
RTS1 15
RTS1 DA2 DY2
DTR1 13
DTR1 DA3 DY3
19
DCD1
DCD1 RY1 RA1
18
RXD1
RXD1 RY2 RA2
17
DSR1
DSR1 RY3 RA3
CTS1 14
CTS1 RY4 RA4
RI1 12
RI1 RY5 RA5
11
GND VCC2
GD75232
VCC
U4
20
VCC VCC1
TXD2 16
TXD2 DA1 DY1
RTS2 15
RTS2 DA2 DY2
DTR2 13
DTR2 DA3 DY3
DCD2 19
DCD2 RY1 RA1
18
RXD2
RXD2 RY2 RA2
17
DSR2
DSR2 RY3 RA3
14
CTS2
CTS2 RY4 RA4
RI2 12
RI2 RY5 RA5
11
GND VCC2
GD75232
RN11
1 2
3 4
5 6
7 8
8P4R 33
RN10
1 2
3 4
5 6
7 8
8P4R 33
RN12
1 2
3 4
5 6
C50
7 8
180PF
8P4R 33
P_ACK
P_BUSY
P_PE
P_SLCT
2
COM1, COM2 AND IR
with Bipolar drivers and receivers
1 +12V
5
6
8
2
3
4
7
9
10 -12V
C29
C32
C27 C31 C26
-12V
100p
100p 100p 100p
100p
C28
C34
C25
+12V
100p
100p
100p
1 +12V
5
6
8
2
3
4
7
9
10 -12V
C47
C52 C53 C73 C75
100p
100p
100p 100p 100p
C74
C45 C76
100p
100p 100p
RN5 RN4 RN3
8P4R 2K 8P4R 2K 8P4R 2K
C41
C49 C51 C43
180PF 180PF 180PF
180PF 180PF
C46 C42 C37
C48 C44
180PF 180PF 180PF 180PF 180PF
3
CN2B
COM1
26 31
27 32
28 33
-XRI1
29 34
30
COM9A
CN2C
COM2
35 40
36 41
37 42
-XRI2
38 43
39
COM9B
VCC
RN2
8P4R 2K
R28
2K
ACK
BSY
PE
SCLT
C38 C40 C35 C30
180PF
180PF 180PF
C39 C36 C33
VIA TECHNOLOGIES, INC.
180PF 180PF
180PF
Title
Size
C
Date:
3
4
PRINTER
CN2A
1 14
2 15
3 16
4 17
5 18
6 19
7 20
8 21
9 22
10 23
11 24
12 25
13
PRINT PORT
PRINTER / COM PORT
Document Number Rev
VT5228C (Preliminary)
Wednesday, November 24, 1999 Sheet 17 of 20
4
A
B
C
D
0.1