PEB20534H-10 SIEMENS [Siemens Semiconductor Group], PEB20534H-10 Datasheet - Page 292

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

Semiconductor Group
CAS
MDS(1..0)
ADM
Carrier Detect Auto Start
CAS = ’0’
CAS = ’1’
Note: In ASYNC mode the transmitter is additionally controlled by in-
Mode Select
This bit field selects the HDLC protocol sub-mode including the
’extended transparent mode’. ’MDS’ selection is invalid if any PPP mode
is enabled via bit field ’PPPM’.
MDS = ’00’
MDS = ’01’
MDS = ’10’
MDS = ’11’
Address Mode Select
The meaning of this bit depends on the selected protocol sub-mode:
Automode, Non-Automode:
Determines the address field length of a HDLC frame.
ADM = ’0’
ADM = ’1’
Address mode 0/1:
Determines whether address mode 0 or 1 is selected.
ADM = ’0’
ADM = ’1’
band flow control mechanism (if enabled).
The CD pin is used as general input.
In clock mode 1 and 4, clock mode specific control signals
must be provided at this pin (receive strobe, receive
gating).
In clock mode 5, this input signal is unused.
A pull-up/down resistor is recommended if unused.
The CD pin enables/disables the receiver for data
reception. (Polarity of CD pin can be configured via bit
’ICD’.)
Automode.
Non-Automode.
Address Mode 0/1.
(Option ’0’ or ’1’ is selected via bit ’ADM’.)
Extended transparent mode (bit transparent
transmission/reception).
8-bit address field.
16-bit address field.
Address Mode 0 (no address recognition).
Address Mode 1 (high byte address recognition).
292
Detailed Register Description
Data Sheet 09.98
(hdlc modes)
PEB 20534
(hdlc mode)
(all modes)