参数资料
型号: TMDXEVM5515
厂商: Texas Instruments
文件页数: 136/159页
文件大小: 0K
描述: EVAL MODULE DSP FOR C55XX
标准包装: 1
类型: DSP
适用于相关产品: TMS320C55x 系列
所含物品: 板,线缆,CD,电源
产品目录页面: 718 (CN2011-ZH PDF)
其它名称: 296-25753
SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
5.17.2 SPI Electrical Data/Timing
Table 5-46. Timing Requirements for SPI Inputs (see Figure 5-39 through Figure 5-42 )
NO.
CV DD = 1.05 V
MIN MAX
CV DD = 1.3 V
MIN MAX
UNIT
4
5
6
7
8
t C(SCLK)
t w(SCLKH)
t w(SCLKL)
t su(SRXV-SCLK)
t h(SCLK-SRXV)
Cycle time, SPI_CLK
Pulse duration, SPI_CLK high
Pulse duration, SPI_CLK low
Setup time, SPI_RX valid before SPI_CLK high, SPI Mode 0
Setup time, SPI_RX valid before SPI_CLK low, SPI Mode 1
Setup time, SPI_RX valid before SPI_CLK high, SPI Mode 2
Setup time, SPI_RX valid before SPI_CLK high, SPI Mode 3
Hold time, SPI_RX valid after SPI_CLK high, SPI Mode 0
Hold time, SPI_RX valid after SPI_CLK low, SPI Mode 1
Hold time, SPI_RX valid after SPI_CLK low, SPI Mode 2
Hold time, SPI_RX valid after SPI_CLK high, SPI Mode 3
66.4 or
4P (1) (2)
30
30
16.1
16.1
16.1
16.1
0
0
0
0
40 or
4P (1) (2)
19
19
13.9
13.9
13.9
13.9
0
0
0
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(1)
(2)
P = SYSCLK period in ns. For example, when the CPU core is clocked at 100 MHz, use P = 10 ns.
Use whichever value is greater.
Table 5-47. Switching Characteristics Over Recommended Operating Conditions for SPI Outputs
(see Figure 5-39 through Figure 5-42 )
NO.
PARAMETER
Delay time, SPI_CLK low to SPI_TX valid, SPI
Mode 0
CV DD = 1.05 V
MIN
-4.2
MAX
8.9
CV DD = 1.3 V
MIN
-4.9
MAX
5.3
UNIT
ns
1
t d(SCLK-STXV)
Delay time, SPI_CLK high to SPI_TX valid, SPI
Mode 1
Delay time, SPI_CLK high to SPI_TX valid, SPI
Mode 2
Delay time, SPI_CLK low to SPI_TX valid, SPI
Mode 3
-4.2
-4.2
-4.2
8.9
8.9
8.9
-4.9
-4.9
-4.9
5.3
5.3
5.3
ns
ns
ns
2
3
t d(SPICS-SCLK)
t oh(SCLKI-SPICSI)
Delay time, SPI_CS active to SPI_CLK active
Output hold time, SPI_CS inactive to SPI_CLK
inactive
0.5t C - 2.2
t C - 8 + D (1)
0.5t C - 2.2
t C - 8 + D (1)
ns
ns
(1)
D is the programable data delay in ns. Data delay can be programmed to 0, 1, 2, or 3 SPICLK clock cycles.
4
SPI_CLK
5
1
6
SPI_TX
SPI_RX
2
B0
B0
7
B1
B1
8
Bn-2
Bn-2
Bn-1
Bn-1
3
SPI_CS
A.
B.
Character length is programmable between 1 and 32 bits; 8-bit character length shown.
Polarity of SPI_CSn is configurable, active-low polarity is shown.
Figure 5-39. SPI Mode 0 Transfer (CKP n = 0, CKPH n = 0)
136
Peripheral Information and Electrical Specifications
Product Folder Links: TMS320C5515
Copyright ? 2010–2013, Texas Instruments Incorporated
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