Com2 Header (J23) - TYAN THUNDER K8SD PRO Manual

2.11 – COM2 Header (J23)
2.12 – PCI-X Bridge B (PCI 1 & PCI 2) PCI-X Speed Select Jumper (J24 / J39)
Signal
Description
NC/KEY
RI (Ring-
CPU2
Indicator)
CTS (Clear-
to-Send)
RTS
CPU1
(Request-
to-Send)
DSR (Data-
Set-Ready)
133MHz
100MHz
66MHz
CPU2
Allows PCI-X Bridge B to operate at up
to 133MHz (For use with one PCI-X
133 device)
Tyan recommends using PCI-X Slot
1 for 133MHz support
CPU1
16
http://www.TYAN.com
2
1
Pin#
10
8
6
4
2
Speed
1
J24 / J39
J39
10
9
Signal
Pin#
Description
GND
9
(Ground)
DTR (Data-
Terminal -
7
Ready)
TX
(Transfer-
5
Data)
RX
(Receive-
3
Data)
DCD
(Data
1
Carrier
Detect)
1
J24
J24 / J39