AM3359, AM3358, AM3357, AM3356, AM3354, AM3352
SPRS717H – OCTOBER 2011 – REVISED MAY 2015
7.12.1.2 McSPI—Master Mode
Table 7-83. McSPI Timing Conditions – Master Mode
LOW LOAD
HIGH LOAD
PARAMETER
UNIT
MIN
MAX
MIN
MAX
Input Conditions
t
r
Input signal rise time
8
8
ns
t
f
Input signal fall time
8
8
ns
Output Condition
C
load
Output load capacitance
5
25
pF
Table 7-84. Timing Requirements for McSPI Input Timings – Master Mode
(see
OPP100
OPP50
NO.
LOW LOAD
HIGH LOAD
LOW LOAD
HIGH LOAD
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
t
su(SOMI-
Setup time, SPI_D[x] (SOMI) valid before
4
2.29
3.02
2.29
3.02
ns
SPICLKH)
SPI_CLK active edge
Industrial extended
temperature
7.1
7.1
7.1
7.1
Hold time, SPI_D[x]
t
h(SPICLKH-
(-40°C to 125°C)
5
(SOMI) valid after
ns
SOMI)
SPI_CLK active edge
All other
4.7
4.7
4.7
4.7
temperature ranges
(1) Pins SPIx_D0 and SPIx_D1 can function as SIMO or SOMI.
Table 7-85. Switching Characteristics for McSPI Output Timings – Master Mode
(see
OPP100
OPP50
NO.
PARAMETER
LOW LOAD
HIGH LOAD
LOW LOAD
HIGH LOAD
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
1
t
c(SPICLK)
Cycle time, SPI_CLK
20.8
20.8
41.6
41.6
ns
Typical pulse duration,
0.5P –
0.5P +
0.5P –
0.5P +
0.5P –
0.5P +
0.5P –
0.5P +
2
t
w(SPICLKL)
ns
SPI_CLK low
2.08
Typical pulse duration,
0.5P –
0.5P +
0.5P –
0.5P +
0.5P –
0.5P +
0.5P –
0.5P +
t
w(SPICLKH)
ns
SPI_CLK high
2.08
3
t
r(SPICLK)
Rising time, SPI_CLK
3.82
3.82
3.82
3.82
ns
t
f(SPICLK)
Falling time, SPI_CLK
3.44
3.44
3.44
3.44
ns
Delay time, SPI_CLK
6
t
d(SPICLK-SIMO)
active edge to SPI_D[x]
–3.57
3.57
–4.62
4.62
–3.57
3.57
–4.62
4.62
ns
(SIMO) transition
Delay time, SPI_CS active
7
t
d(CS-SIMO)
edge to SPI_D[x] (SIMO)
3.57
4.62
3.57
4.62
ns
Mode 1
Delay time,
A – 4.2
A – 2.54
A – 4.2
A – 2.54
ns
and 3
SPI_CS active
8
t
d(CS-SPICLK)
to SPI_CLK
Mode 0
B – 4.2
B – 2.54
B – 4.2
B – 2.54
ns
first edge
and 2
Delay time,
Mode 1
B – 4.2
B – 2.54
B – 4.2
B – 2.54
ns
SPI_CLK last
and 3
9
t
d(SPICLK-CS)
edge to
Mode 0
SPI_CS
A – 4.2
A – 2.54
A – 4.2
A – 2.54
ns
and 2
inactive
(1) P = SPI_CLK period.
(2) Pins SPIx_D0 and SPIx_D1 can function as SIMO or SOMI.
(3) The polarity of SPIx_CLK and the active edge (rising or falling) on which mcspix_simo is driven and mcspix_somi is latched is all
software configurable:
–
SPIx_CLK(1) phase programmable with the bit PHA of MCSPI_CH(i)CONF register: PHA = 1 (Modes 1 and 3).
–
SPIx_CLK(1) phase programmable with the bit PHA of MCSPI_CH(i)CONF register: PHA = 0 (Modes 0 and 2).
218
Peripheral Information and Timings
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