參數(shù)資料
型號: PHASE-LOCKEDLOOP
元件分類: 串行ADC
英文描述: Micropower Sampling 8-Bit Serial I/O A/D Converters; Package: SO; No of Pins: 8; Temperature Range: -40°C to +85°C
中文描述: 壓控Ocillator
文件頁數(shù): 12/20頁
文件大小: 1757K
代理商: PHASE-LOCKEDLOOP
Revision 1.01/April 2002 Semtech Corp.
Page 12
www.semtech.com
AN-SETS-7
ADVANCED COMMUNICATIONS
APPLICATION NOTE
PLL Configurations for ACS8530
2.6
Configuration for Low Jitter E3/DS3 and E1/DS1 with No Independent T4 Path
The configuration for the ACS8530 where the T0 and T4 paths are locked to the T0 is shown in Figure 8.
This configuration will yield low jitter E3/DS3 outputs from the T4 path. The T0 path will yield low jitter
n x E1/DS1.
Figure 8
Configuration for low jitter E3/DS3 and E1/DS1 with no independent T4 path.
The register settings for the configuration described are as follows:
Reg 35 bit 7 = 1
Reg 35 bit 6 = 0
Reg 35 bit 4 = x
Reg 64 bit (2:0) = E3 (110) or DS3 (111), see Table 3
Reg 65 bit 7 = 0
Reg 65 bit 6 = 0
Reg 65 bit (5:4) = xx
Reg 65 bit (2:0) = 12 E1 (010), 16 E1 (011), 16 DS1 (101) or 24 DS1 (100), see Table 2
path 5
Configure for E3/DS3 mode as required
Note... Digital feedback is required to match digital output,
for synchronization reasons
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