peb20525 Infineon Technologies Corporation, peb20525 Datasheet - Page 50

• Manufacturer Part Number: peb20525
• Description: 2 Channel Serial Optimized Communication Controller For Hdlc/ppp
• Manufacturer: Infineon Technologies Corporation

The clocking concept is illustrated in a block diagram manner in the following figure:
Additional control signals are not illustrated (please refer to the detailed clock mode
descriptions below).
Figure 14
Data Sheet
Clock Supply Overview
settings controlled by:
register CCR0, bit field 'CM'
selects the clock mode number
register CCR0, bit 'SSEL'
selects the additional a/b option
TTL
Oscillator
or
CRYSTAL
3a
7a
Transmitter
0b
3b
7b
DPLL
2b
6b
f
f
DPLL
TRM
1
5a
0b
6a/b
7a/b
50
0a
2a
6a
4
5b
BRG
f
BRG
2a/b
3a/b
16:1
f
BRG/16
2a/b
3a
6a/b
7a
Receiver
3b
7b
f
RxCLK
f
REC
0a/b
1
5a/b
4
Functional Overview
f
TxCLK
PEB 20525
PEF 20525
2000-09-14