TMS320F2810 Datasheet, PDF (124/172 Pages) Texas Instruments – Digital Signal Processors

TMS320F2810, TMS320F2811, TMS320F2812
TMS320C2810, TMS320C2811, TMS320C2812
SPRS174T – APRIL 2001 – REVISED MAY 2012
Table 6-29. SPI Slave Mode External Timing (Clock Phase = 1)⁽¹⁾⁽²⁾
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NO.
MIN
MAX
12
13 ⁽³⁾
14 ⁽³⁾
17 ⁽³⁾
18 ⁽³⁾
t_c(SPC)S
t_w(SPCH)S
t_w(SPCL)S
t_w(SPCL)S
t_w(SPCH)S
t_{su(SOMI-SPCH)S}
t_{su(SOMI-SPCL)S}
t_{v(SPCH-SOMI)S}
Cycle time, SPICLK
Pulse duration, SPICLK high (clock polarity = 0)
Pulse duration, SPICLK low (clock polarity = 1)
Pulse duration, SPICLK low (clock polarity = 0)
Pulse duration, SPICLK high (clock polarity = 1)
Setup time, SPISOMI before SPICLK high (clock polarity = 0)
Setup time, SPISOMI before SPICLK low (clock polarity = 1)
Valid time, SPISOMI data valid after SPICLK high
(clock polarity = 0)
8t_c(LCO)
0.5t_c(SPC)S – 10
0.5t_c(SPC)S – 10
0.5t_c(SPC)S – 10
0.5t_c(SPC)S – 10
0.125t_c(SPC)S
0.125t_c(SPC)S
0.75t_c(SPC)S
0.5t_c(SPC)S
0.5t_c(SPC)S
0.5t_c(SPC)S
0.5t_c(SPC)S
t_{v(SPCL-SOMI)S}
21 ⁽³⁾
22 ⁽³⁾
t_{su(SIMO-SPCH)S}
t_{su(SIMO-SPCL)S}
t_{v(SPCH-SIMO)S}
Valid time, SPISOMI data valid after SPICLK low
(clock polarity = 1)
Setup time, SPISIMO before SPICLK high (clock polarity = 0)
Setup time, SPISIMO before SPICLK low (clock polarity = 1)
Valid time, SPISIMO data valid after SPICLK high
(clock polarity = 0)
0.75t_c(SPC)S
0
0
0.5t_c(SPC)S
t_{v(SPCL-SIMO)S}
Valid time, SPISIMO data valid after SPICLK low
(clock polarity = 1)
0.5t_c(SPC)S
(1) The MASTER/SLAVE bit (SPICTL.2) is cleared and the CLOCK PHASE bit (SPICTL.3) is set.
(2) t_c(SPC) = SPI clock cycle time = LSPCLK/4 or LSPCLK/(SPIBRR + 1)
t_c(LCO) = LSPCLK cycle time
(3) The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6).
NOTE: Internal clock prescalers must be adjusted such that the SPI clock speed is limited to the following SPI clock rate:
• Master mode transmit: 20 MHz MAX. Master mode receive: 12.5 MHz MAX.
• Slave mode transmit: 12.5 MHz MAX. Slave mode receive: 12.5 MHz MAX.
UNIT
ns
ns
ns
ns
ns
ns
ns
124 Electrical Specifications
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