IDT82V3380PF8 IDT, Integrated Device Technology Inc, IDT82V3380PF8 Datasheet - Page 129
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IDT82V3380PF8
Manufacturer Part Number
IDT82V3380PF8
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.IDT82V3380PF8.pdf
(170 pages)
Specifications of IDT82V3380PF8
Function
Wan PLL
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Package Type
TQFP
Pin Count
100
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
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PHASE_LOSS_COARSE_LIMIT_CNFG - Phase Loss Coarse Detector Limit Configuration *
Programming Information
IDT82V3380
Address: 5AH
Type: Read / Write
Default Value: 10000101
3 - 0 PH_LOS_COARSE_LIMT[3:0]
Bit
7
6
5
4
COARSE_PH_L
OS_LIMT_EN
COARSE_PH_LOS_LIMT_EN
MULTI_PH_8K_4K_2K_EN
7
MULTI_PH_APP
WIDE_EN
Name
WIDE_EN
6
This bit controls whether the occurrence of the coarse phase loss will result in the T0/T4 DPLL unlocked.
0: Disabled.
1: Enabled. (default)
Refer to the description of the MULTI_PH_8K_4K_2K_EN bit (b4, 5AH).
This bit determines whether the PFD output of T0/T4 DPLL is limited to ±1 UI or is limited to the coarse phase limit.
0: Limited to ±1 UI. (default)
1: Limited to the coarse phase limit. When the selected input clock is of 2 kHz, 4 kHz or 8 kHz, the coarse phase limit depends
on the MULTI_PH_8K_4K_2K_EN bit, the WIDE_EN bit and the PH_LOS_COARSE_LIMT[3:0] bits; when the selected input
clock is of other frequencies but 2 kHz, 4 kHz and 8 kHz, the coarse phase limit depends on the WIDE_EN bit and the
PH_LOS_COARSE_LIMT[3:0] bits. Refer to the description of the MULTI_PH_8K_4K_2K_EN bit (b4, 5AH) for details.
This bit, together with the WIDE_EN bit (b6, 5AH) and the PH_LOS_COARSE_LIMT[3:0] bits (b3~0, 5AH), determines the
coarse phase limit when the selected input clock is of 2 kHz, 4 kHz or 8 kHz. When the selected input clock is of other frequen-
cies but 2 kHz, 4 kHz and 8 kHz, the coarse phase limit depends on the WIDE_EN bit and the PH_LOS_COARSE_LIMT[3:0]
bits.
These bit set the coarse phase limit. The limit is used only in some cases. Refer to the description of the
MULTI_PH_8K_4K_2K_EN bit (b4, 5AH).
0000: ±1 UI.
0001: ±3 UI.
0010: ±7 UI.
0011: ±15 UI.
0100: ±31 UI.
0101: ±63 UI. (default)
0110: ±127 UI.
0111: ±255 UI.
1000: ±511 UI.
1001: ±1023 UI (T0); Reserved (T4).
1010-1111: Reserved.
MULTI_PH_APP
Selected Input Clock MULTI_PH_8K_4K_2K_EN WIDE_EN
2 kHz, 4 kHz or 8 kHz
other than 2 kHz, 4
kHz and 8 kHz
5
MULTI_PH_8K_
4K_2K_EN
4
don’t-care
129
0
1
PH_LOS_COA
RSE_LIMT3
3
Description
don’t-care
0
1
0
1
PH_LOS_COA
RSE_LIMT2
set by the PH_LOS_COARSE_LIMT[3:0] bits
set by the PH_LOS_COARSE_LIMT[3:0] bits
2
SYNCHRONOUS ETHERNET WAN PLL
Coarse Phase Limit
PH_LOS_COA
RSE_LIMT1
(b3~0, 5AH).
(b3~0, 5AH).
±1 UI
±1 UI
±1 UI
1
October 20, 2008
PH_LOS_COA
RSE_LIMT0
0
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