Si5369-EVB Silicon Laboratories Inc, Si5369-EVB Datasheet - Page 28

• Manufacturer Part Number: Si5369-EVB
• Description: MCU, MPU & DSP Development Tools SI5369 DEV KIT
• Manufacturer: Silicon Laboratories Inc

Specifications of Si5369-EVB

• Processor To Be Evaluated: Si5369
• Interface Type: I2C, SPI
• Operating Supply Voltage: 3.3 V
• Lead Free Status / Rohs Status: Details

Reset value = 1110 1101
28
Register 5.
Name
Type
7:6
5:3
2:0
Bit
Bit
SFOUT2_REG [2:0] SFOUT2_REG [2:0]
SFOUT1_REG [2:0] SFOUT1_REG [2:0]
ICMOS [1:0]
D7
ICMOS [1:0]
Name
R/W
D6
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: 8 mA/2 mA
01: 16 mA/4 mA
10: 24 mA/6 mA
11: 32 mA (3.3 V operation)/8mA (1.8 V operation)
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
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
D5
SFOUT2_REG [2:0]
Preliminary Rev. 0.4
R/W
D4
D3
Function
D2
SFOUT1_REG [2:0]
R/W
D1
D0