参数资料
型号: SI5367/68-EVB
厂商: Silicon Laboratories Inc
文件页数: 19/80页
文件大小: 0K
描述: BOARD EVAL FOR SI5367/68
标准包装: 1
主要目的: 计时,时钟发生器
已用 IC / 零件: SI5367,SI5368
已供物品: 板,线缆,CD,文档
Si5367
26
Rev. 0.5
Reset value = 0010 1010
Register 7.
Bit
D7
D6
D5D4D3D2D1D0
Name
SFOUT5_REG [2:0]
FOSREFSEL [2:0]
Type
RR
R/W
Bit
Name
Function
7:6
Reserved
5:3
SFOUT5_REG [2:0] SFOUT5_REG [2:0]
Controls output signal format and disable for CKOUT5 output buffer. The LVPECL
and CMOS output formats draw more current than either LVDS or CML; however,
there are restrictions in the allowed output format pin settings so that the maximum
power dissipation for the TQFP devices is limited when they are operated at 3.3 V.
When there are four enabled LVPECL or CMOS outputs, the fifth output must be
disabled. When there are five enabled outputs, there can be no more than three
outputs that are either LVPECL or CMOS.
000: Reserved
001: Disable
010: CMOS (Bypass mode not supported.)
011: Low swing LVDS
100: Reserved
101: LVPECL
110: CML
111: LVDS
2:0
FOSREFSEL [2:0]
FOSREFSEL [2:0].
Selects which input clock is used as the reference frequency for Frequency Off-Set
(FOS) alarms.
000: XA/XB (External reference)
001: CKIN1
010: CKIN2
011: CKIN3
100: CKIN4
101: Reserved
110: Reserved
111: Reserved
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