参数资料
型号: IDT82V3255DK
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 通信及网络
英文描述: WAN PLL
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP64
封装: TQFP-64
文件页数: 98/127页
文件大小: 868K
代理商: IDT82V3255DK
IDT82V3255
WAN PLL
Programming Information
98
June 19, 2006
T4_DPLL_APLL_PATH_CNFG - T4 DPLL & APLL Path Configuration
Address: 60H
Type: Read / Write
Default Value: 01000X0X
Bit
Name
Description
7 - 4
T4_APLL_PATH[3:0]
These bits select an input to the T4 APLL.
0000: The output of T0 DPLL 77.76 MHz path.
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. (default)
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 T4 DPLL GSM/GPS/16E1/16T1 path.
00: 16E1.
01: 16T1.
10: GSM.
11: GPS.
The default value of the T0_GSM_GPS_16E1_16T1_SEL0 bit is determined by the SONET/
SDH
pin during
reset.
These bits select an output clock from the T4 DPLL 12E1/24T1/E3/T3 path.
00: 12E1.
01: 24T1.
10: E3.
11: T3.
The default value of the T4_12E1_24T1_E3_T3_SEL0 bit is determined by the SONET/
SDH
pin during reset.
3 - 2
T4_GSM_GPS_16E1_16T1_SEL[1:0]
1 - 0
T4_12E1_24T1_E3_T3_SEL[1:0]
7
6
5
4
3
2
1
0
T4_APLL_PATH
3
T4_APLL_PA
TH2
T4_APLL_PA
TH1
T4_APLL_PA
TH0
T4_GSM_GPS_16
E1_16T1_SEL1
T4_GSM_GPS_16
E1_16T1_SEL0
T4_12E1_24T1_
E3_T3_SEL1
T4_12E1_24T1_
E3_T3_SEL0
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