CD2231 Intel Corporation, CD2231 Datasheet - Page 59

• Manufacturer Part Number: CD2231
• Description: CD2231 Intelligent Two-channel Lan And Wan Communications Controller
• Manufacturer: Intel Corporation

Datasheet
System
Clock
Figure 10. Bit Rate Generator/DPLL
Table 4. Clock Source Select (Sheet 1 of 2)
(for TX BRG only)
RXCIN or TXCIN
2048
128
512
32
8
Receive Clock Option Register (RCOR)
Transmit Clock Option Register (TCOR)
ClkSel2
ClkSel2
TLVal
RX bit clk
0
0
0
0
1
1
Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
Clk 0
Clk 1
Clk 2
Clk 3
Clk 4
ClkSel1
ClkSel1
res
0
0
1
1
0
0
From RCOR/TCOR
0
1
2
3
4
5
6
7
ClkSel0
ClkSel0
dpllEn
Mux
0
1
0
1
0
1
(RBPR or TBPR)
Period Register
(for DPLL only)
Adjustments
applied here
Dpllmd1
res
Reserved
Select
Clk 0
Clk 1
Clk 2
Clk 3
Clk 4
Dpllmd0
Ext-1X
ClkSel2
CA
C2
res
(RBCR or TBCR)
Count Register
C8
C0
Zero Detect
dec/inc
ClkSel1
Mux
LLM
B
B
N
R/W
R/W
ClkSel0
res
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