Circuit Description
CAN-CBM-DP / DN-CBM-DP
Hardware-Manual • Doc.-No.: C.2844/6.21
/
Rev. 1.9
Page 19 of 45
3.3 Serial Interface
3.3.1 Configuration
The physical interface of the serial configuration interface can be configured as an RS-232, RS-422, RS-
485, TTY-active or TTY-passive interface. For RS-232 operation an RS-232A driver component is used
and for the other interfaces piggy-backs are used.
The serial interface is controlled by the 68331. The bit rate of the interface can be set by parameters.
For each interface type (RS-232, RS-422, RS-485, TTY) a bit rate of up to 38.4 kbit/s is supported.
The following bit rates can be set by means of the software. The values in the second column show the
actual bit rates, which result from the controller-internal conversion.
Bit rate (set value)
[bit/s]
Bit rate (actual value)
[bit/s]
38,400
19,200
9,600
4,800
2,400
1,200
600
300
38,462
19,231
9,615
4,808
2,404
1,199
600.2
299.9
Table 6: Adjustable bit rates
