TMS320DM6467 Datasheet, PDF (303/334 Pages) Texas Instruments – Digital Media System-on-Chip

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TMS320DM6467
Digital Media System-on-Chip
SPRS403 – DECEMBER 2007
Table 6-106. Additional Output Switching Characteristics of 5-Pin Option in Master Mode (continued)
NO.
23
t_d(CLK-EN) ⁽³⁾
PARAMETER
Delay time, SPI_EN assertion low to first
SPI_CLK rising edge, polarity = 0,
phase = 0, SPI_EN was initially deasserted
and SPI_CLK delayed
Delay time, SPI_EN assertion low to first
SPI_CLK rising edge, polarity = 0,
phase = 1, SPI_EN was initially deasserted
and SPI_CLK delayed
Delay time, SPI_EN assertion low to first
SPI_CLK falling edge, polarity = 1,
phase = 0, SPI_EN was initially deasserted
and SPI_CLK delayed
Delay time, SPI_EN assertion low to first
SPI_CLK falling edge, polarity = 1,
phase = 1, SPI_EN was initially deasserted
and SPI_CLK delayed
MIN
MAX UNIT
0.5T + P
P
ns
0.5T + P
P
Slave Mode — Additional
Table 6-107. Additional Output Switching Characteristics of 4-Pin Enable Option in Slave Mode⁽¹⁾
NO.
SPI24 t_d(CLK-EN) ⁽²⁾
PARAMETER
Delay time, final SPI_CLK falling edge to
slave deasserting SPI_EN, polarity = 0,
phase = 0
Delay time, final SPI_CLK falling edge to
slave deasserting SPI_EN, polarity = 0,
phase = 1
Delay time, final SPI_CLK rising edge to slave
deasserting SPI_EN, polarity = 1,
phase = 0
Delay time, final SPI_CLK rising edge to slave
deasserting SPI_EN, polarity = 1,
phase = 1
MIN
P–6
0.5T + P – 6
P–6
0.5T + P – 6
MAX UNIT
3P + 15
0.5T + 3P + 15
ns
3P + 15
0.5T + 3P + 15
(1) T = period of SPI_CLK; P = period of SPI core clock
(2) Figure 6-78 shows only polarity = 0, phase = 0 as an example.
Table 6-108. Additional Output Switching Characteristics of 4-Pin Chip-Select Option in Slave Mode⁽¹⁾
NO.
27
28
t_d(CSL-SOMI)
t_{dis(CSH-SOMI)}
PARAMETER
Delay time, master asserting SPI_CS[n] to slave driving SPI_SOMI
data valid
Disable time, master deasserting SPI_CS[n] to slave driving
SPI_SOMI high impedance
MIN
MAX UNIT
P + 6 ns
P + 6 ns
(1) T = period of SPI_CLK; P = period of SPI core clock
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Peripheral Information and Electrical Specifications 303