IDT82V3380A Integrated Device Technology, IDT82V3380A Datasheet - Page 72
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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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INPUT_MODE_CNFG - Input Mode Configuration
Programming Information
IDT82V3380A
Address: 09H
Type: Read / Write
Default Value: 10100XX0
AUTO_EXT_SY
4 - 3
Bit
7
6
5
2
1
0
NC_EN
7
AUTO_EXT_SYNC_EN Refer to the description of the EXT_SYNC_EN bit (b6, 09H).
PH_ALARM_TIMEOUT
REVERTIVE_MODE
SYNC_FREQ[1:0]
MASTER_SLAVE
IN_SONET_SDH
EXT_SYNC_EN
EXT_SYNC_EN
Name
6
This bit, together with the AUTO_EXT_SYNC_EN bit (b7, 09H), determines whether EX_SYNC1 is enabled to synchronize
the frame sync output signals.
This bit determines how to clear the phase lock alarm.
0: The phase lock alarm will be cleared when a ‘1’ is written to the corresponding INn_PH_LOCK_ALARM bit (b4/0,
43H~49H).
1: The phase lock alarm will be 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. (default)
These bits set the frequency of the frame sync signal input on the EX_SYNC1 pin.
00: 8 kHz (default)
01: 8 kHz.
10: 4 kHz.
11: 2 kHz.
This bit selects the SDH or SONET network type.
0: SDH. The DPLL required clock is 2.048 MHz when the IN_FREQ[3:0] bits (b3~0, 14H~17H & 19H~22H) are ‘0001’; the
T0/T4 DPLL output from the 16E1/16T1 path is 16E1; and OUT9 outputs a 2.048 MHz signal if enabled.
1: SONET. The DPLL required clock is 1.544 MHz when the IN_FREQ[3:0] bits (b3~0, 14H~17H & 19H~22H) are ‘0001’; the
T0/T4 DPLL output from the 16E1/16T1 path is 16T1; and OUT9 outputs a 1.544 MHz signal if enabled.
The default value of this bit is determined by the SONET/SDH pin during reset.
This bit is read only. It indicates the value of the MS/SL pin.
This bit selects Revertive or Non-Revertive switch for T0 path.
0: Non-Revertive switch. (default)
1: Revertive switch.
Its default value is determined by the MS/SL pin during reset.
AUTO_EXT_SYNC_EN
PH_ALARM_TI
MEOUT
don’t-care
5
0
1
SYNC_FREQ1
EXT_SYNC_EN
4
0
1
1
72
SYNC_FREQ0
3
Enabled if the T0 selected input clock is IN11; otherwise, disabled.
Description
IN_SONET_SD
SYNCHRONOUS ETHERNET WAN PLL™
H
2
Synchronization
Disabled (default)
Enabled
MASTER_SLAV
E
1
September 30, 2010
REVERTIVE_M
ODE
0
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