参数资料
型号: IDT82V3255
厂商: Integrated Device Technology, Inc.
英文描述: WAN PLL
中文描述: 广域网锁相环
文件页数: 107/127页
文件大小: 868K
代理商: IDT82V3255
IDT82V3255
WAN PLL
Programming Information
107
June 19, 2006
6.2.9
PBO & PHASE OFFSET CONTROL REGISTERS
PHASE_MON_PBO_CNFG - Phase Transient Monitor & PBO Configuration
PHASE_OFFSET[7:0]_CNFG - Phase Offset Configuration 1
Address:78H
Type: Read / Write
Default Value: 0X000110
Bit
Name
Description
7
IN_NOISE_WINDOW
This bit determines whether the input clock whose edge respect to the reference clock is outside ±5% is enabled to be
selected for T0/T4 DPLL.
0: Disabled. (default)
1: Enabled.
Reserved.
This bit is valid only when the PH_MON_PBO_EN bit (b4, 78H) is ‘1’. It determines whether the Phase Transient Monitor
is enabled to monitor the phase-time changes on the T0 selected input clock.
0: Disabled. (default)
1: Enabled.
This bit determines whether a PBO event is triggered when the phase-time changes on the T0 selected input clock are
greater than a programmable limit over an interval of less than 0.1 seconds with the PH_MON_EN bit being ‘1’. The limit
is programmed by the PH_TR_MON_LIMT[3:0] bits (b3~0, 78H).
0: Disabled. (default)
1: Enabled.
These bits represent an unsigned integer. The Phase Transient Monitor limit in ns can be calculated as follows:
Limit (ns) = (PH_TR_MON_LIMT[3:0] + 7) X 156.
6
-
5
PH_MON_EN
4
PH_MON_PBO_EN
3 - 0
PH_TR_MON_LIMT[3:0]
Address:7AH
Type: Read / Write
Default Value: 00000000
Bit
Name
Description
7 - 0
PH_OFFSET[7:0] Refer to the description of the PH_OFFSET[9:8] bits (b1~0, 7BH).
7
6
5
4
3
2
1
0
IN_NOISE_WIN
DOW
-
PH_MON_EN
PH_MON_PBO
_EN
PH_TR_MON_L
IMT3
PH_TR_MON_L
IMT2
PH_TR_MON_L
IMT1
PH_TR_MON_L
IMT0
7
6
5
4
3
2
1
0
PH_OFFSET7
PH_OFFSET6
PH_OFFSET5
PH_OFFSET4
PH_OFFSET3
PH_OFFSET2
PH_OFFSET1
PH_OFFSET0
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