參數(shù)資料
型號: SI5369-EVB
廠商: Silicon Laboratories Inc
文件頁數(shù): 22/84頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR SI5369 CLK MULT
標準包裝: 1
主要目的: 計時,精密時鐘
嵌入式:
已用 IC / 零件: Si5369
已供物品: 板,線纜,CD,文檔
Si5369
Rev. 1.0
29
Reset value = 1110 1101
Register 5.
Bit
D7
D6D5D4
D3D2D1
D0
Name
ICMOS [1:0]
SFOUT2_REG [2:0]
SFOUT1_REG [2:0]
Type
R/W
Bit
Name
Function
7:6
ICMOS [1:0]
ICMOS [1:0].
When the output buffer is set to CMOS mode, these bits determine the output buf-
fer drive strength. The first number below refers to 3.3 V operation; the second to
1.8 V operation. These values assume CKOUT+ is tied to CKOUT-.
00: 8mA/2mA
01: 16 mA/4 mA
10: 24 mA/6 mA
11: 32 mA (3.3 V operation)/8mA (1.8 V operation)
5:3
SFOUT2_REG [2:0] SFOUT2_REG [2:0]
Controls output signal format and disable for CKOUT2 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
011: Low swing LVDS
100: Reserved
101: LVPECL
110: CML
111: LVDS
2:0
SFOUT1_REG [2:0] SFOUT1_REG [2:0]
Controls output signal format and disable for CKOUT1 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
011: Low swing LVDS
100: Reserved
101: LVPECL
110: CML
111: LVDS
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