PEB20534 Datasheet, PDF (213/442 Pages) Siemens Semiconductor Group – DMA Supported Serial Communication Controller with 4 Channels DSCC4

PEB 20534
Reset and Initialization Procedure
Table 36 Exceptional handling in Case of Transmit Data Underrun (cont’d)
Step Action by Host
Action by DSCC4
7
Set GCMDR.AR.
8
After the DSCC4 has become bus
master the DMAC sets up the internal
DMA channels for data transmission. If
availablle, data are transferred from
shared memory to on chip TFIFO.
In case of a general restart the initialization and start sequences have to be performed
as described in tables 31 to 32.
Semiconductor Group
213
Data Sheet 09.98