Etup – Impulse 7804e User Manual
Page 6
©Sealevel Systems, Inc.
SL9219 - 06/2011
7804e Manual
6
The Ultra COMM+8.PCIe is automatically assigned I/O addresses and IRQs by your motherboard
BIOS or by a „Plug-n-Play‟ Operating System. Adding or removing other hardware or moving the
adapter to another slot may change the assignment of I/O addresses and IRQs.
The Ultra COMM+8.PCIe derives a 62.5MHz clock from the PCI express link which is divided by
a 8 bit clock prescaler and a 16 bit clock divisor to provide a wide range of possible baud rates.
The following table shows some common data rates and the rates you should choose to achieve
them when using the ULTRA COMM+8.PCI
For This Data Rate
CPR
Choose This Divisor
DLM:DLL
1200 bps
32
3254
2400 bps
32
1627
4800 bps
32
813
9600 bps
32
406
19.2K bps
32
203
38.4K bps
32
102
57.6K bps
32
68
115.2K bps
32
34
230.4K bps
32
17
460.8K bps
8
34
921.6K bps
8
17