PEB20534 Datasheet, PDF (219/439 Pages) Siemens Semiconductor Group – DMA Supported Serial Communication Controller with 4 Channels DSCC4

PEB 20534
PEF 20534
Reset and Initialization Procedure
Transmit Descriptor List:
Address
CFG: FE = 1, HOLD = 1, NO = 16
0001 1000
0001 1004
0001 1008
0001 100C
C010 0000
0001 1100
0040 0000
4000 0000
Next Tx Descriptor Pointer
Tx Data Pointer
0000 0000
Status: Completed. 0000 0001
0000 0002
0000 0003
Receive Descriptor List:
Address
CFG: HOLD = 1, HI = 1, NO = 32
0001 0000 6020 0000
0001 0004 0001 0100 ^{Next Rx Descriptor Pointer}
0001 0008 0040 0000 ^{Rx Data Pointer}
0000 0000
0001 000C C011 0000 BNO = 17, Status = 0 0000 0001
0001 0010 0001 0000
0000 0002
FE Descriptor Pointer
0000 0003
Ax
"Ax" = Receive Status Byte: "Ax" means
Valid Frame, CRC OK;
"x" = Don’t care in transparent mode 0
Address
0000 6000 _{A000 0001}
A000 0001
~~
~~
Address
0000 4000 _{1200 0040}
1006 0000
~~
~~
Address
0000 2000
5210 1000
5002 0000
5204 0000
~~
~~
IQCFG
Set by host
Set by DSCC4
IQSCC1RX
IQSCC1TX
ITD10620
Figure 76 Data Stuctures in shared Memory after Transmission
Data Sheet
219
2000-05-30