參數(shù)資料
型號: TMX320LF2407AVFS
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: DSP CONTROLLERS
中文描述: DSP控制器
文件頁數(shù): 93/134頁
文件大小: 1759K
代理商: TMX320LF2407AVFS
P
1
9
SPI master mode external timing parameters (clock phase = 1)
(see Figure 42)
NO.
SPI WHEN (SPIBRR + 1) IS EVEN
OR SPIBRR = 0 OR 2
SPI WHEN (SPIBRR + 1)
IS ODD AND SPIBRR > 3
MIN
MAX
MIN
1
t
c(SPC)M
Cycle time, SPICLK
4t
c(CO)
128t
c(CO)
5t
c(CO)
2
§
t
w(SPCH)M
Pulse duration, SPICLK high
(clock polarity = 0)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
0.5t
c(SPC)M
0.5t
c(CO)
10
0.5t
t
w(SPCL)M
Pulse duration, SPICLK low
(clock polarity = 1)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
0.5t
c(SPC)M
0.5t
c(CO)
10
0.5t
3
§
t
w(SPCL)M
Pulse duration, SPICLK low
(clock polarity = 0)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
0.5t
c(SPC)M
+0.5t
c(CO)
10
0.5t
t
w(SPCH)M
Pulse duration, SPICLK high
(clock polarity = 1)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
0.5t
c(SPC)M
+0.5t
c(CO)
10
0.5t
6
§
t
su(SIMO-SPCH)M
Setup time, SPISIMO data
valid before SPICLK high
(clock polarity = 0)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
10
t
su(SIMO-SPCL)M
Setup time, SPISIMO data
valid before SPICLK low
(clock polarity = 1)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
10
7
§
t
v(SPCH-SIMO)M
Valid time, SPISIMO data
valid after SPICLK high
(clock polarity =0)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
10
t
v(SPCL-SIMO)M
Valid time, SPISIMO data
valid after SPICLK low
(clock polarity =1)
0.5t
c(SPC)M
10
0.5t
c(SPC)M
10
10
§
t
su(SOMI-SPCH)M
Setup time, SPISOMI before
SPICLK high
(clock polarity = 0)
0
0
t
su(SOMI-SPCL)M
Setup time, SPISOMI before
SPICLK low
(clock polarity = 1)
0
0
11
§
t
v(SPCH-SOMI)M
Valid time, SPISOMI data
valid after SPICLK high
(clock polarity = 0)
0.25t
c(SPC)M
10
0.5t
c(SPC)M
10
t
v(SPCL-SOMI)M
Valid time, SPISOMI data
valid after SPICLK low
(clock polarity = 1)
0.25t
c(SPC)M
10
0.5t
c(SPC)M
10
The MASTER/SLAVE bit (SPICTL.2) is set and the CLOCK PHASE bit (SPICTL.3) is set.
t
c
= system clock cycle time = 1/CLKOUT = t
c(CO)
§
The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6).
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