Si5338-RM
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 57
Rev. 1.4 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 2021
Reset value = xxxx xxxx
Register 27.
BitD7 D6D5D4D3D2D1D0
Name
I2C_1P8_SEL I2C_ADDR[6:0]
Type R/W R/W*
Bit Name Function
7 I2C_1P8_SEL
I
2
C Reference V
DD
.
External I2C VDD 0 = 3.3 V/2.5 V, 1 = 1.8 V.
0: 3.3 V/2.5 V (default)
1: 1.8 V
6:0* I2C_ADDR[6:0]
7-Bit I
2
C Address.
If and only if there is an I2C_LSB pin, the actual I
2
C LSB address is the logical “or” of
the bit in position 0 with the state of the I2C_LSB pin. Otherwise, the actual I2C_LSB
is the LSB of this 7-bit address. Custom 7-bit I
2
C addresses may be requested but
must be even numbers if pin control of the I
2
C address is to be implemented. For
example, if the I
2
C address = 70h, the I2C_LSB pin can change the LSB from 0 to 1.
However, if the I
2
C address = 71h, the I2C_LSB pin will have no effect upon the I
2
C
address.
*Note: Although these bits are R/W, writing them is not supported. Custom I
2
C addresses can be set at the factory. Contact
your local sales office for details.
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