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STW82100B Datasheet, PDF (49/67 Pages) STMicroelectronics – RF down converter with embedded integer-N synthesizer
STW82100B
10.2 SPI timing specification
10.2.1 Data, clock and load timing
Figure 23. SPI timing waveforms
tsetup thold
DATA
MSB
MSB - 1
LSB
CLOCK
tclk
LOAD
tclk_loadr
SPI digital interface
tload
tclk_loadf
Table 20. SPI timing parameters
Parameter
Description
tsetup
thold
tclk
tload
tclk_loadr
tclk_loadf
DATA to CLOCK setup time
DATA to clock hold time
CLOCK cycle period
LOAD pulse width
CLOCK to LOAD rising edge
CLOCK to LOAD falling edge
Min.
1
0.5
10
3
0.6
2.5
Typ.
-
-
-
-
-
-
Max.
Unit
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
Doc ID 018355 Rev 5
49/67