IDT82V3255TFG IDT, Integrated Device Technology Inc, IDT82V3255TFG Datasheet - Page 95

• Manufacturer Part Number: IDT82V3255TFG
• Description: IC PLL WAN SMC STRATUM 3 64-TQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: PLL Clock Generatorr

Specifications of IDT82V3255TFG

• Input: CMOS, LVDS, PECL
• Output: CMOS, LVDS, PECL
• Frequency - Max: 622.08MHz
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Frequency-max: 622.08MHz
• Function: Wan PLL
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: TQFP
• Pin Count: 64
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 82V3255TFG

PHASE_LOSS_FINE_LIMIT_CNFG - Phase Loss Fine Detector Limit Configuration *
Programming Information
IDT82V3255
Address: 5BH
Type: Read / Write
Default Value: 10XXX010
FINE_PH_LOS_
5 - 3
2 - 0
LIMT_EN
Bit
7
6
7
FINE_PH_LOS_LIMT_EN
PH_LOS_FINE_LIMT[2:0]
FAST_LOS_SW
FAST_LOS_SW
Name
-
6
Reserved.
This bit controls whether the occurrence of the fine phase loss will result in the T0/T4 DPLL unlocked.
0: Disabled.
1: Enabled. (default)
The value in this bit can be switched only when it is available for T0 path; this bit is always ‘1’ when it is available for T4
path.
This bit controls whether the occurrence of the fast loss will result in the T0/T4 DPLL unlocked.
0: Does not result in the T0 DPLL unlocked. T0 DPLL will enter Temp-Holdover mode automatically. (default)
1: Results in the T0/T4 DPLL unlocked. For T0 path, T0 DPLL will enter Lost-Phase mode if the T0 DPLL operating
mode is switched automatically.
These bits set a fine phase limit.
000: 0.
001: ± (45 ° ~ 90 °).
010: ± (90 ° ~ 180 °). (default)
011: ± (180 ° ~ 360 °).
100: ± (20 ns ~ 25 ns).
101: ± (60 ns ~ 65 ns).
110: ± (120 ns ~ 125 ns).
111: ± (950 ns ~ 955 ns).
5
-
4
-
95
3
-
Description
PH_LOS_FINE
_LIMT2
2
PH_LOS_FINE
_LIMT1
1
December 3, 2008
PH_LOS_FINE
_LIMT0
0
WAN PLL