Silicon Laboratories Si5 UC-EVB Series, Manual

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7. Supported Devices - Software Controlled Mode - I
2
C
If using the Si5XXUC-EVB with a device that utilizes the I2C bus for making frequency or other changes to the device, this “software
controlled mode” section should be used to configure the EVB.
If you have a device installed that is either fixed frequency or has pin-controlled output frequency, refer to Section 6. Supported Devices
- Stand-Alone Mode .
The tables below show I2C XO and I2C VCXO devices supported by the Si5xxUC-EVB along with possible package sizes and control
pin mapping. The control pin mapping can be used to determine the corresponding switch settings on the Si5xxUC-EVB when using
software controlled mode.
Table 7.1. I
2
C XOs
SiLabs
Device Type # Freqs # pins Pkg sizes
(mm x mm) Pin 1
Control Pin 2
Control Pin 7
Control Pin 8
Control Pin 4 Out-
put Pin 5 Out-
put
Si564 XO I2C or
(Single/
Dual/
Quad) 8 5x7, 3.2x5 OE/NC/FS OE/NC/FS SDA/FS1 SCL/FS0 CLK+ CLK-
Si544 XO I2C or
(Single/
Dual/
Quad) 8 5x7, 3.2x5 OE/NC/FS OE/NC/FS SDA/FS1 SCL/FS0 CLK+ CLK-
Si549 XO I2C or
(Single/
Dual/
Quad) 8 5x7, 3.2x5 OE/NC/FS OE/NC/FS SDA/FS1 SCL/FS0 CLK+ CLK-
Si570 XO I2C 8 5x7 NC OE SDA SCL CLK+ CLK-
Si598 XO I2C 8 5x7 NC OE SDA SCL CLK+ CLK-
Si514 XO I2C 6 5x7, 3.2x5,
2.5x3.2 SDA SCL - - CLK+ CLK-
Table 7.2. I2C VCXOs
SiLabs
Device Type # Freqs # pins Pkg sizes
(mm x mm) Pin 1
Control Pin 2
Control Pin 7
Control Pin 8
Control Pin 4 Out-
put Pin 5 Out-
put
Si569 VCXO I2C or
(Single/
Dual) 8 5x7, 3.2x5 Vc OE/FS SDA SCL CLK+ CLK-
Si571 VCXO I2C 8 5x7 Vc OE SDA SCL CLK+ CLK-
Si599 VCXO I2C 8 5x7 Vc OE SDA SCL CLK+ CLK-
UG298: Si5xxUC-EVB
Supported Devices - Software Controlled Mode - I2C
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