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: 53/127页
文件大小: 868K
代理商: IDT82V3255
IDT82V3255
WAN PLL
Programming Information
53
June 19, 2006
T4_T0_REG_SEL_CNFG - T0 / T4 Registers Selection Configuration
PHASE_ALARM_TIME_OUT_CNFG - Phase Lock Alarm Time-Out Configuration
Address: 07H
Type: Read / Write
Default Value: XXX0XXXX
Bit
Name
Description
7 - 5
-
Reserved.
A part of the registers are shared by T0 and T4 paths. These registers are addressed 27H, 28H, 2AH, 4EH, 4FH, 5AH, 5BH, 62H
~ 64H, 68H and 69H. This bit determines whether the register configuration is available for T0 or T4 path.
0: T0 path (default).
1: T4 path.
Reserved.
4
T4_T0_SEL
3 - 0
-
Address: 08H
Type: Read / Write
Default Value: 00110010
Bit
Name
Description
7 - 6
MULTI_FACTOR[1:0]
These bits determine a factor which has a relationship with a period in seconds. A phase lock alarm will be raised if the T0
selected input clock is not locked in T0 DPLL within this period. If the PH_ALARM_TIMEOUT bit (b5, 09H) is ‘1’, the
phase lock alarm will be cleared after this period (starting from when the alarm is raised). Refer to the description of the
TIME_OUT_VALUE[5:0] bits (b5~0, 08H).
00: 2 (default)
01: 4
10: 8
11: 16
These bits represent an unsigned integer. If the value in these bits is multiplied by the value in the MULTI_FACTOR[1:0]
bits (b7~6, 08H), a period in seconds will be gotten.
A phase lock alarm will be raised if the T0 selected input clock is not locked in T0 DPLL within this period. If the
PH_ALARM_TIMEOUT bit (b5, 09H) is ‘1’, the phase lock alarm will be cleared after this period (starting from when the
alarm is raised).
5 - 0
TIME_OUT_VALUE[5:0]
7
6
5
4
3
2
1
0
-
-
-
T4_T0_SEL
-
-
-
-
7
6
5
4
3
2
1
0
MULTI_FACTO
R1
MULTI_FACTO
R0
TIME_OUT_VA
LUE5
TIME_OUT_VA
LUE4
TIME_OUT_VA
LUE3
TIME_OUT_VA
LUE2
TIME_OUT_VA
LUE1
TIME_OUT_VAL
UE0
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