SI3232 Datasheet, PDF (56/128 Pages) Silicon Laboratories – DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING

Si3232
Figures 33–36 illustrate the various cycles for accessing RAM address locations. RAM addresses are 16-bit
entities; therefore the accesses always require four bytes.
CS
SCLK
SDI
CONTROL
ADDRESS
DATA [15:8]
DATA [7:0]
SDO
Hi-Z
Figure 33. RAM Write Operation via an 8-Bit SPI Port
CS
SCLK
SDI
SDO
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DATA [15:8]
Figure 34. RAM Read Operation via an 8-Bit SPI Port
DATA [7:0]
CS
SCLK
SDI
SDO
CONTROL
ADDRESS
Data [15:8]
Data [7:0]
Figure 35. RAM Write Operation via a 16-Bit SPI Port
Hi - Z
CS
SCLK
SDI
SDO
CONTROL
ADDRESS
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Data [15:8]
Data [7:0]
Figure 36. RAM Read Operation via a 16-Bit SPI Port
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Preliminary Rev. 0.96