Digi NS9750 - Manual (Page 851)

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T i m i n g
SPI timing
Note:
All AC characteristics are measured with 10pF, unless otherwise noted.
Table 475 describes the values shown in the SPI timing diagrams (Figure 136 through
Figure 139).
Parm Description Min Max Units Modes Notes
SPI master parameters
SP0 SPI enable low setup to first SPI
CLK out rising 3*T
BCLK
-10 ns 0, 3 1, 3
SP1 SPI enable low setup to first SPI
CLK out falling 3*T
BCLK
-10 ns 1, 2 1, 3
SP3 SPI data in setup to SPI CLK out
rising 30 ns 0, 3
SP4 SPI data in hold from SPI CLK out
rising 0 ns 0, 3
SP5 SPI data in setup to SPI CLK out
falling 30 ns 1, 2
SP6 SPI data in hold from SPI CLK out
falling 0 ns 1, 2
SP7 SPI CLK out falling to SPI data out
valid 10 ns 0, 3 6
SP8 SPI CLK out rising to SPI data out
valid 10 ns 1, 2 6
SP9 SPI enable low hold from last SPI
CLK out falling 3*T
BCLK
-10 ns 0, 3 1, 3
SP10 SPI enable low hold from last SPI
CLK out rising 3*T
BCLK
-10 ns 1, 2 1, 3
SP11 SPI CLK out high time SP13*45% SPI3*55% ns 0, 1, 2, 3 4
SP12 SPI CLK out low time SP13*45% SPI3*55% ns 0, 1, 2, 3 4
SP13 SPI CLK out period T
BCLK
*6 ns 0, 1, 2, 3 3
SPI slave parameters
Table 475: SPI timing parameters