參數資料
型號: ZL50022GAC
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 路由/交換
英文描述: Enhanced 4 K Digital Switch with Stratum 4E DPLL
中文描述: TELECOM, DIGITAL TIME SWITCH, PBGA256
封裝: 17 X 17 MM, 1.61 MM HEIGHT, PLASTIC, MS-034, BGA-256
文件頁數: 70/121頁
文件大?。?/td> 939K
代理商: ZL50022GAC
ZL50022
Data Sheet
70
Zarlink Semiconductor Inc.
1 - 0
FDM1 - 0
Force DPLL Timing Mode
These bits force the DPLL into one of the valid operation modes.
Bit
Name
Description
15 - 9
Unused
Reserved
In normal functional mode, these bits are zero.
8
SLM
Slew Rate Limiter Status Bit
If the device sets this bit to high, the DPLL phase difference between the input and output
clocks is changing at the slew rate limit defined in the Slew Rate Limit Register (SRLR).
7
LST
Lock Status Bit
If the device sets this bit to high, while the LDTR and LDIR registers are programmed
properly, the DPLL output clocks are locked to the selected input reference.
If this bit is low, the DPLL output clocks are not yet locked to the selected input reference.
Table 37 - Reference Change Status Register (RCSR) Bits - Read Only
Bit
Name
Description
Table 36 - Reference Change Control Register (RCCR) Bits (continued)
External Read/Write Address: 004B
H
Reset Value: 0000
H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
MTR
PRS
1
PRS
0
PMS
2
PMS
1
PMS
0
FDM
1
FDM
0
FDM1
FDM0
DPLL TIMING Mode
0
0
Automatic
0
1
Normal
1
0
Holdover
1
1
Freerun
External Read Only Address: 004C
H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
SLM
LST
RFR2
RFR1
RFR0
RES1
RES0
DPM1
DPM0
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