IDT82V3255TFG IDT, Integrated Device Technology Inc, IDT82V3255TFG Datasheet - Page 90

• 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

6.2.7
T0_DPLL_APLL_PATH_CNFG - T0 DPLL & APLL Path Configuration
Programming Information
IDT82V3255
Address: 55H
Type: Read / Write
Default Value: 00000X0X
T0_APLL_PATH
7 - 4
3 - 2
1 - 0
Bit
7
3
T0 / T4 DPLL & APLL CONFIGURATION REGISTERS
T0_GSM_OBSAI_16E1_16T1_SEL[1:0]
T0_12E1_24T1_E3_T3_SEL[1:0]
T0_APLL_PA
T0_APLL_PATH[3:0]
TH2
6
Name
T0_APLL_PA
TH1
5
These bits select an input to the T0 APLL.
0000: The output of T0 DPLL 77.76 MHz path. (default)
0001: The output of T0 DPLL 12E1/24T1/E3/T3 path.
0010: The output of T0 DPLL 16E1/16T1 path.
0011: The output of T0 DPLL GSM/OBSAI/16E1/16T1 path.
0100: The output of T4 DPLL 77.76 MHz path.
0101: The output of T4 DPLL 12E1/24T1/E3/T3 path.
0110: The output of T4 DPLL 16E1/16T1 path.
0111: The output of T4 DPLL GSM/GPS/16E1/16T1 path.
1XXX: Reserved.
These bits select an output clock from the T0 DPLL GSM/OBSAI/16E1/16T1 path.
00: 16E1.
01: 16T1.
10: GSM.
11: OBSAI.
The default value of the T0_GSM_OBSAI_16E1_16T1_SEL0 bit is determined by the SONET/SDH pin dur-
ing reset.
These bits select an output clock from the T0 DPLL 12E1/24T1/E3/T3 path.
00: 12E1.
01: 24T1.
10: E3.
11: T3.
The default value of the T0_12E1_24T1_E3_T3_SEL0 bit is determined by the SONET/SDH pin during
reset.
T0_APLL_PA
TH0
4
T0_GSM_OBSAI_
16E1_16T1_SEL1
90
3
T0_GSM_OBSAI_
16E1_16T1_SEL0
Description
2
T0_12E1_24T1_
E3_T3_SEL1
1
December 3, 2008
T0_12E1_24T1_
E3_T3_SEL0
0
WAN PLL