PEX-400111
7.3 Serial Interface Base Clock
The PEX-400111 supports the following base clock frequencies used for the serial communications
controller:
8.192 MHz, 12.288 MHz, 14.7456 MHz, 19.6608 MHz, 32 MHz, 49.152 MHz, and 58.9824 MHz.
The maximum transfer rate of the PEX-400111 is 1 Mbps with the base clock frequency of 32 MHz.
7.3.1 Serial Interface Transfer Rates (Bit Rate)
The following table shows typical programmable transfer rates.
Refer to “7.3.2 Limitations on the Serial Interface Bit Rate Generator Programming,” page 29, for
more details. The PEX-400111 supports only asynchronous communications.
Base Clock Frequency
8.192 MHz 12.288 MHz 14.7456 MHz 19.6608 MHz
32 MHz
49.152 MHz 58.9824 MHz
512000 768000 921600
819200
1000000
768000
921600
256000 384000 115200
204800
500000
384000
115200
128000 192000 57600
102400
125000
192000
38400
64000 48000 9600
51200
50000
38400
14400
32000 24000 7200
10240
10000
19200
4800
4000 3000 2400
2560
2500
3000
2400
1000 1500 1200
1280
1250
1500
1800
500 75 150
600
625
750 300
T
ran
sfer R
a
tes [b
p
s]
8 12 15
20
32
48
64
Caution
!
An actual transfer rate depends on your computer, software, and
connection device.
Interface Corporation
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