AM1808_12 Datasheet, PDF (156/262 Pages) Texas Instruments – ARM Microprocessor

AM1808
SPRS653C – FEBRUARY 2010 – REVISED DECEMBER 2011
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Table 5-72. Additional SPI0 Master Timings, 5-Pin Option ^(1)(2)(3) (continued)
NO.
22 t_{d(SCS_SPC)M}
23 t_{d(ENA_SPC)M}
PARAMETER
Polarity = 0, Phase = 0,
to SPI0_CLK rising
Delay from SPI0_SCS active to
first SPI0_CLK^{(7) (8) (9)}
Polarity = 0, Phase = 1,
to SPI0_CLK rising
Polarity = 1, Phase = 0,
to SPI0_CLK falling
Polarity = 1, Phase = 1,
to SPI0_CLK falling
Polarity = 0, Phase = 0,
to SPI0_CLK rising
Delay from assertion of SPI0_ENA
low to first SPI0_CLK edge.⁽¹⁰⁾
Polarity = 0, Phase = 1,
to SPI0_CLK rising
Polarity = 1, Phase = 0,
to SPI0_CLK falling
Polarity = 1, Phase = 1,
to SPI0_CLK falling
1.3V, 1.2V
MIN
MAX
2P-2
0.5M+2P-2
2P-2
0.5M+2P-2
3P+5
0.5M+3P+5
3P+5
0.5M+3P+5
MIN
2P-2
1.1V
MAX
0.5M+2P-2
2P-2
0.5M+2P-2
3P+5
0.5M+3P+5
3P+5
0.5M+3P+5
(7) If SPI0_ENA is asserted immediately such that the transmission is not delayed by SPI0_ENA.
(8) In the case where the master SPI is ready with new data before SPI0_SCS assertion.
(9) This delay can be increased under software control by the register bit field SPIDELAY.C2TDELAY[4:0].
(10) If SPI0_ENA was initially deasserted high and SPI0_CLK is delayed.
MIN
2P-3
1.0V
MAX
0.5M+2P-3
2P-3
0.5M+2P-3
3P+6
0.5M+3P+6
3P+6
0.5M+3P+6
UNIT
ns
ns
Table 5-73. Additional SPI0 Slave Timings, 4-Pin Enable Option ^(1)(2)(3)
NO.
24 t_{d(SPC_ENAH)S}
PARAMETER
Delay from final SPI0_CLK edge
to slave deasserting SPI0_ENA.
Polarity = 0, Phase = 0,
from SPI0_CLK falling
Polarity = 0, Phase = 1,
from SPI0_CLK falling
Polarity = 1, Phase = 0,
from SPI0_CLK rising
Polarity = 1, Phase = 1,
from SPI0_CLK rising
1.3V, 1.2V
MIN
MAX
1.5P-3
2.5P+17.5
– 0.5M+1.5P-3 – 0.5M+2.5P+17.5
1.5P-3
2.5P+17.5
– 0.5M+1.5P-3 – 0.5+2.5P+17.5
MIN
1.5P-3
1.1V
MAX
2.5P+20
– 0.5M+1.5P-3 – 0.5M+2.5P+20
1.5P-3
2.5P+20
– 0.5M+1.5P-3 – 0.5+2.5P+20
(1) These parameters are in addition to the general timings for SPI slave modes (Table 5-69).
(2) P = SYSCLK2 period; M = t_c(SPC)M (SPI master bit clock period)
(3) Figure shows only Polarity = 0, Phase = 0 as an example. Table gives parameters for all four slave clocking modes.
MIN
1.5P-3
1.0V
MAX
2.5P+27
– 0.5M+1.5P-3 – 0.5M+2.5P+27
1.5P-3
2.5P+27
– 0.5M+1.5P-3 – 0.5+2.5P+27
UNIT
ns
156 Peripheral Information and Electrical Specifications
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