IDT82V3380A Integrated Device Technology, IDT82V3380A Datasheet - Page 125
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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7.2.7
T0_DPLL_APLL_PATH_CNFG - T0 DPLL & APLL Path Configuration
Programming Information
IDT82V3380A
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_ETH_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 ETH/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 ETH/OBSAI/16E1/16T1 path.
00: 16E1.
01: 16T1.
10: ETH.
11: OBSAI.
The default value of the T0_ETH_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
16E1_16T1_SEL1
T0_ETH_OBSAI_
125
3
16E1_16T1_SEL0
T0_ETH_OBSAI_
Description
2
SYNCHRONOUS ETHERNET WAN PLL™
T0_12E1_24T1_
E3_T3_SEL1
1
September 30, 2010
T0_12E1_24T1_
E3_T3_SEL0
0
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