IDT82V3380A Integrated Device Technology, IDT82V3380A Datasheet - Page 112
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IDT82V3380A
Manufacturer Part Number
IDT82V3380A
Description
Synchronous Ethernet Idt Wan Plltm Idt82v3380a
Manufacturer
Integrated Device Technology
Datasheet
1.IDT82V3380A.pdf
(177 pages)
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IN_FREQ_READ_STS - Input Clock Frequency Read Value
IN1_IN2_STS - Input Clock 1 & 2 Status
Programming Information
IDT82V3380A
Address: 42H
Type: Read
Default Value: 00000000
Address: 43H
Type: Read
Default Value: X110X110
IN_FREQ_VAL
7 - 0
Bit
Bit
7
6
5
4
3
2
1
0
UE7
7
7
-
IN_FREQ_VALUE[7:0]
IN2_NO_ACTIVITY_ALARM
IN1_NO_ACTIVITY_ALARM
IN2_FREQ_HARD_ALARM
IN1_FREQ_HARD_ALARM
IN2_PH_LOCK_ALARM
IN1_PH_LOCK_ALARM
IN2_FREQ_HA
IN_FREQ_VAL
RD_ALARM
Name
Name
UE6
6
6
-
-
These bits represent a 2’s complement signed integer. If the value is multiplied by the value in the
FREQ_MON_FACTOR[3:0] bits (b3~0, 2EH), the frequency of an input clock with respect to the reference clock in ppm will
be gotten. The input clock is selected by the IN_FREQ_READ_CH[3:0] bits (b3~0, 41H).
The value in these bits is updated every 16 seconds, starting when an input clock is selected.
IN2_NO_ACTIV
IN_FREQ_VAL
ITY_ALARM
Reserved.
This bit indicates whether IN2 is in frequency hard alarm status.
0: No frequency hard alarm.
1: In frequency hard alarm status. (default)
This bit indicates whether IN2 is in no-activity alarm status.
0: No no-activity alarm.
1: In no-activity alarm status. (default)
This bit indicates whether IN2 is in phase lock alarm status.
0: No phase lock alarm. (default)
1: In phase lock alarm status.
If the PH_ALARM_TIMEOUT bit (b5, 09H) is ‘0’, this bit is cleared by writing ‘1’ to this bit; if the
PH_ALARM_TIMEOUT bit (b5, 09H) is ‘1’, this bit is cleared after a period (= TIME_OUT_VALUE[5:0] (b5~0, 08H) X
MULTI_FACTOR[1:0] (b7~6, 08H) in second) which starts from when the alarm is raised.
Reserved.
This bit indicates whether IN1 is in frequency hard alarm status.
0: No frequency hard alarm.
1: In frequency hard alarm status. (default)
This bit indicates whether IN1 is in no-activity alarm status.
0: No no-activity alarm.
1: In no-activity alarm status. (default)
This bit indicates whether IN1 is in phase lock alarm status.
0: No phase lock alarm. (default)
1: In phase lock alarm status.
If the PH_ALARM_TIMEOUT bit (b5, 09H) is ‘0’, this bit is cleared by writing ‘1’ to this bit; if the
PH_ALARM_TIMEOUT bit (b5, 09H) is ‘1’, this bit is cleared after a period (= TIME_OUT_VALUE[5:0] (b5~0, 08H) X
MULTI_FACTOR[1:0] (b7~6, 08H) in second) which starts from when the alarm is raised.
UE5
5
5
IN2_PH_LOCK
IN_FREQ_VAL
_ALARM
UE4
4
4
112
IN_FREQ_VAL
UE3
3
3
-
Description
Description
IN1_FREQ_HA
IN_FREQ_VAL
RD_ALARM
UE2
2
2
SYNCHRONOUS ETHERNET WAN PLL™
IN1_NO_ACTIV
IN_FREQ_VAL
ITY_ALARM
UE1
1
1
September 30, 2010
IN_FREQ_VAL
IN1_PH_LOCK
_ALARM
UE0
0
0
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