Datasheet 329
Electrical Characteristics
NOTES:
1. The typical clock frequency driven by the PCH is 17.86 MHz.
2. Measurement point for low time and high time is taken at 0.5(VccSPI)
NOTE:
1. The typical clock frequency driven by the PCH is 31.25 MHz.
2. Measurement point for low time and high time is taken at 0.5(VccSPI).
Table 8-32. SPI Timings (20 MHz)
Sym Parameter Min Max Units Notes Fig
t180a
Serial Clock Frequency - 20M Hz
Operation
17.06 18.73 MHz 1
t183a
Tco of SPI_MOSI with respect to serial
clock falling edge at the host
-5 13 ns 8-22
t184a
Setup of SPI_MISO with respect to
serial clock falling edge at the host
16 — ns 8-22
t185a
Hold of SPI_MISO with respect to serial
clock falling edge at the host
0— ns 8-22
t186a
Setup of SPI_CS[1:0]# assertion with
respect to serial clock rising at the host
30 — ns 8-22
t187a
Hold of SPI_CS[1:0]# deassertion with
respect to serial clock falling at the host
30 — ns 8-22
t188a SPI_CLK high time 26.37 — ns 8-22
t189a SPI_CLK low time 26.82 — ns 8-22
Table 8-33. SPI Timings (33 MHz)
Sym Parameter Min Max Units Notes Fig
t180b
Serial Clock Frequency - 33 MHz
Operation
29.83 32.81 MHz 1
t183b
Tco of SPI_MOSI with respect to serial
clock falling edge at the host
-5 5 ns 8-22
t184b
Setup of SPI_MISO with respect to
serial clock falling edge at the host
8—ns 8-22
t185b
Hold of SPI_MISO with respect to serial
clock falling edge at the host
0—ns 8-22
t186b
Setup of SPI_CS[1:0]# assertion with
respect to serial clock rising at the host
30 — ns 8-22
t187b
Hold of SPI_CS[1:0]# deassertion with
respect to serial clock falling at the host
30 — ns 8-22
t188b SPI_CLK High time 14.88 - ns 8-22
t189b SPI_CLK Low time 15.18 - ns 8-22
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