PEB20534H-10 SIEMENS [Siemens Semiconductor Group], PEB20534H-10 Datasheet - Page 174

• Manufacturer Part Number: PEB20534H-10
• Description: DMA Supported Serial Communication Controller with 4 Channels DSCC4
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Semiconductor Group
Figure 62
8.1.5
Two different types of frames can be transmitted:
– I-frames and
– transparent frames
as shown below.
option1)
The 8 or 16 bit address field can optionally be forwarded to the RFIFO (bit ’RADD’ in
register CCR2)
option 2)
The 16 or 32 bit CRC field can optionally be forwarded to the RFIFO (bit ’RCRC’ in
register CCR2)
HDLC Transmit Data Processing Overview
registers
registers
involved
involved
RFIFO
RFIFO
SCC Receive Data Flow (HDLC Modes) part b)
FLAG
FLAG
compare)
(address
ADDR
RAH1,2
opt. 1)
(low)
8 bit
data
data
CRC16
174
optional 2)
CRC16
/32
optional 2)
/32
Detailed Protocol Description
RSTA
RSTA
FLAG
FLAG
RSTA
RSTA
Data Sheet 09.98
PEB 20534