CS2100-CP
目录
1.引脚说明................................................................................................................................. 4
2.典型连接图.....................................................................................................五
3.特性和规范............................................. ......................................... 6
推荐工作条件............................................... ..................................... 6
绝对最大额定值........................................................................................................ 6
DC电气特性............................................... ................................................. 6
AC电气特性............................................... ................................................. 7
PLL性能曲线............................................................................................................... 8
控制端口切换特征 - IC格式........................................... ........ 9
控制端口开关特性 - SPI格式........................................... .... 10
4.架构概述............................................................................................................. 11
4.1 Δ-Σ分数N频率合成器......................................... ................................ 11
4.2模数混合锁相环.......................................... .......................................... 11
5.应用................................................................................................................................... 13
5.1定时参考时钟输入........................................................................................................ 13
5.1.1内部定时参考时钟分频器.......................................... ..................................... 13
5.1.2晶体连接（ XTI和XTO ） ........................................ .............................................. 14
5.1.3外部参考时钟（ REF_CLK ） ......................................... ......................................... 14
5.2频率参考时钟输入， CLK_IN ........................................... ........................................ 14
5.2.1 CLK_IN跳跃模式......................................................................................................... 14
5.2.2调整最小环路带宽的CLK_IN ........................................ .................... 16
5.3输出到输入频率比配置........................................... .................................. 17
5.3.1用户定义的比例（路德） ..................................................................................................... 17
5.3.2比例调节器（ R- MOD） .......................................................................................................... 18
5.3.3有效率（ REFF ） .......................................................................................................... 19
5.3.4比例配置摘要............................................ .................................................. 19
5.4 PLL时钟输出........................................................................................................................... 20
5.5辅助输出.............................................................................................................................. 20
5.6时钟输出稳定性考虑............................................. ............................................... 21
5.6.1输出开关................................................................................................................... 21
5.6.2 PLL解锁条件.......................................................................................................... 21
5.7要求的加电排序............................................. .................................................. ..... 21
6. SPI / IC控制端口................................................................................................................... 21
6.1 SPI控制..................................................................................................................................... 22
6.2 IC控制...................................................................................................................................... 22
6.3存储器地址指针............................................................................................................... 24
6.3.1地图自动递增.............................................................................................................. 24
7.注册快速参考........................................................................................................ 24
8.注册说明................................................................................................................ 25
8.1设备内径与修订（地址01H ） ............................................ ........................................... 25
8.1.1设备标识（设备[ 4 ： 0 ] ） - 只读.................................. ................................... 25
8.1.2设备版本（修订版[ 2 ： 0 ] ） - 只读.................................. ...................................... 25
8.2设备控制（地址02H ） ........................................................................................................ 25
8.2.1解锁指示灯（解锁） - 只读....................................... ........................................... 25
8.2.2辅助输出禁用（ AuxOutDis ） ......................................... .......................................... 25
8.2.3 PLL时钟输出禁止（ ClkOutDis ） ........................................ .......................................... 26
8.3设备配置1 （地址03H ） .......................................... ................................................. 26
8.3.1 R-国防部选择（ RModSel [ 2 ： 0 ] ） ................................... .................................................. ...... 26
8.3.2辅助输出源选择（ AuxOutSrc [ 1 ： 0 ] ） ................................... .......................... 26
8.3.3启用设备配置寄存器1 （ EnDevCfg1 ） ....................................... ................. 27
8.4全局配置（地址05H ） ........................................... .................................................. .. 27
8.4.1设备配置冻结（冻结） ......................................... ....................................... 27
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DS840F1
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