Intel VC820 - Desktop Board Motherboard Design Manual page 188

8 7
Serial Ports
D
VCC3_3SBY
C
RI_CR
9 ICH_RI#
3
Q1
3
1 1
2
RI_Q
2
C92
B
A
8 7
6
VCC5
U4
GD75232
20
VCC
DCD#0 19
RY0
12
RXD0 18
RY1
12
DSR#0 17
RY2
12
DTR#0 16
DA0
12
TXD0 15
DA1
12
CTS#0 14
RY3
12
RTS#0 13
DA2
12
RI#0 12
RY4
12
11
GND
CR2
BAT54C
3 1
2
VCC5
U6
20
VCC
DCD#1 19
RY0
12
RXD1 18
RY1
12
DSR#1 17
RY2
12
DTR#1 16
DA0
12
TXD1 15
DA1
12
CTS#1 14
RY3
12
RTS#1 13
DA2
12
RI#1 12
RY4
12
11
GND
6
5 4
VCC12
1
VCC12
2 DCD0_C
RA0
3 DSR0_C
RA1
4 RXD0_C
RA2
5 RTS0_C
DY0
6 TXD0_C
DY1
7 CTS0_C
RA3
8 DTR0_C
DY2
9 RI0_C
RA4
10 VCC12-
VCC-12
VCC12
GD75232
1
VCC12
2 DCD1_C
RA0
3 RXD1_C
RA1
4 DSR1_C
RA2
5 DTR1_C
DY0
6 TXD1_C
DY1
7 CTS1_C
RA3
8 RTS1_C
DY2
9 RI1_C
RA4
10 VCC12-
VCC-12
5 4
3 2
COM1
J6
DB25_DB9_STK
A1 DCD
A6 DSR
A2 RXD
A7 RTS
A3 TXD
A8 CTS
A4 DTR
A9 RI
A5 GND
COM2
J7
1 2
3 4
5 6
7 8
9 10
COM2 is a 2x5 pin header for a cabled port.
TITLE: INTEL(R) 820 CHIPSET CUSTOMER REFERENCE BOARD
SERIAL PORTS
DRAWN BY:
PCD PLATFORM DESIGN
R
1900 PRAIRIE CITY ROAD
LAST REVISED:
FOLSOM, CALIFORNIA 95630
3 2
1
D
C
B
A
REV:
1.01
PROJECT:
SHEET:
11-18-1999_11:22 25 OF 36
1