參數資料
型號: TMS320SA32NL
英文描述: PCM, Other/Special/Miscellaneous
中文描述: PCM格式,其他/特別/雜項
文件頁數: 97/132頁
文件大小: 1707K
代理商: TMS320SA32NL
SPRS145G
JULY 2000
REVISED FEBRUARY 2002
97
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
1443
SPI SLAVE MODE TIMING PARAMETERS
Slave mode timing information is listed in the following tables.
SPI slave mode external timing parameters (clock phase = 0)
(see Figure 42)
NO.
12
MIN
MAX
UNIT
ns
tc(SPC)S
tw(SPCH)S
tw(SPCL)S
tw(SPCL)S
tw(SPCH)S
Cycle time, SPICLK
4tc(CO)
0.5tc(SPC)S
10
0.5tc(SPC)S
10
0.5tc(SPC)S
10
0.5tc(SPC)S
10
13
§
Pulse duration, SPICLK high (clock polarity = 0)
0.5tc(SPC)S
0.5tc(SPC)S
0.5tc(SPC)S
0.5tc(SPC)S
ns
Pulse duration, SPICLK low (clock polarity = 1)
14
§
Pulse duration, SPICLK low (clock polarity = 0)
ns
Pulse duration, SPICLK high (clock polarity = 1)
15
§
td(SPCH-SOMI)S
Delay time, SPICLK high to SPISOMI valid
(clock polarity = 0)
0.375tc(SPC)S
10
ns
td(SPCL-SOMI)S
Delay time, SPICLK low to SPISOMI valid (clock polarity = 1)
0.375tc(SPC)S
10
16
§
tv(SPCL-SOMI)S
Valid time, SPISOMI data valid after SPICLK low
(clock polarity =0)
0.75tc(SPC)S
ns
tv(SPCH-SOMI)S
Valid time, SPISOMI data valid after SPICLK high
(clock polarity =1)
0.75tc(SPC)S
19
§
tsu(SIMO-SPCL)S
tsu(SIMO-SPCH)S
Setup time, SPISIMO before SPICLK low (clock polarity = 0)
0
ns
Setup time, SPISIMO before SPICLK high (clock polarity = 1)
0
20
§
tv(SPCL-SIMO)S
Valid time, SPISIMO data valid after SPICLK low
(clock polarity = 0)
0.5tc(SPC)S
ns
tv(SPCH-SIMO)S
Valid time, SPISIMO data valid after SPICLK high
(clock polarity = 1)
0.5tc(SPC)S
The MASTER/SLAVE bit (SPICTL.2) is cleared and the CLOCK PHASE bit (SPICTL.3) is cleared.
tc = system clock cycle time = 1/CLKOUT = tc(CO)
§
The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6).
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