4. Functions
36
GCOM-2C2-PCI,
GCOM-4C2-PCI, GCOM-8C2-PCI
Setting the Baud Rate
The output baud rate can be set by setting the appropriate value to the Baud Rate Generator register. The
available setting range depends on which clock mode is used.
Clock 3 mode: 15
-
921,600bps
Clock 2 mode: 8
-
460,800bps
Clock 1 mode: 4
-
230,400bps
Clock 0 mode: 2
-
115,200bps
However, some baud rate values do not have a corresponding Baud Rate Generator register setting. If
the result of substituting the baud rate into the equation below is an integer, then that baud rate can be set.
If the result contains a fractional part, the baud rate cannot be set.
Clock 3 mode
921600 ÷ Desired baud rate
=
Division register setting value
Ex.) 921600
÷
9600bps
=
96 (As the result is an integer, this baud rate can be set.)
921600
÷
128000bps
=
7.2 (As the result contains a fractional part, this baud rate cannot be set.)
Clock 2 mode
460800 ÷ Desired baud rate
=
Division register setting value
Ex.) 460800
÷
9600bps
=
48 (As the result is an integer, this baud rate can be set.)
460800
÷
128000bps
=
3.6 (As the result contains a fractional part, this baud rate cannot be set.)
Clock 1 mode
230400 ÷ Desired baud rate
=
Division register setting value
Ex.) 230400
÷
9600bps
=
24 (As the result is an integer, this baud rate can be set.)
230400
÷
128000bps
=
1.8 (As the result contains a fractional part, this baud rate cannot be set.)
Clock 0 mode
115200 ÷ Desired baud rate
=
Division register setting value
Ex.) 115200
÷
9600bps
=
12 (As the result is an integer, this baud rate can be set.)
115200
÷
76800bps
=
1.5 (As the result contains a fractional part, this baud rate cannot be set.)
Summary of Contents for GCOM-2C2-PCI
Page 13: ...1 Before Using the Product 8 GCOM 2C2 PCI GCOM 4C2 PCI GCOM 8C2 PCI...
Page 43: ...4 Functions 38 GCOM 2C2 PCI GCOM 4C2 PCI GCOM 8C2 PCI...
Page 46: ...5 About Software GCOM 2C2 PCI GCOM 4C2 PCI GCOM 8C2 PCI 41 CD ROM Directory Structure...
Page 47: ...5 About Software 42 GCOM 2C2 PCI GCOM 4C2 PCI GCOM 8C2 PCI...
Page 52: ...6 About Hardware GCOM 2C2 PCI GCOM 4C2 PCI GCOM 8C2 PCI 47...