OMAP-L137
www.ti.com
SPRS563G – SEPTEMBER 2008 – REVISED JUNE 2014
Table 6-57. General Timing Requirements for SPI0 Slave Modes
(1)
No.
PARAMETER
MIN
MAX
UNIT
9
t
c(SPC)S
Cycle Time, SPI0_CLK, All Slave Modes
greater of 3P or 40
ns
10
t
w(SPCH)S
Pulse Width High, SPI0_CLK, All Slave Modes
18
ns
11
t
w(SPCL)S
Pulse Width Low, SPI0_CLK, All Slave Modes
18
ns
Polarity = 0, Phase = 0,
2P
to SPI0_CLK rising
Polarity = 0, Phase = 1,
2P
Setup time, transmit data written to
to SPI0_CLK rising
12
t
su(SOMI_SPC)S
SPI before initial clock edge from
ns
Polarity = 1, Phase = 0,
master.
(2) (3)
2P
to SPI0_CLK falling
Polarity = 1, Phase = 1,
2P
to SPI0_CLK falling
Polarity = 0, Phase = 0,
18.5
from SPI0_CLK rising
Polarity = 0, Phase = 1,
18.5
Delay, subsequent bits valid on
from SPI0_CLK falling
13
t
d(SPC_SOMI)S
SPI0_SOMI after transmit edge of
ns
Polarity = 1, Phase = 0,
SPI0_CLK
18.5
from SPI0_CLK falling
Polarity = 1, Phase = 1,
18.5
from SPI0_CLK rising
Polarity = 0, Phase = 0,
0.5t
c(SPC)S
-3
from SPI0_CLK falling
Polarity = 0, Phase = 1,
0.5t
c(SPC)S
-3
Output hold time, SPI0_SOMI valid
from SPI0_CLK rising
14
t
oh(SPC_SOMI)S
after
ns
Polarity = 1, Phase = 0,
receive edge of SPI0_CLK
0.5t
c(SPC)S
-3
from SPI0_CLK rising
Polarity = 1, Phase = 1,
0.5t
c(SPC)S
-3
from SPI0_CLK falling
Polarity = 0, Phase = 0,
0
to SPI0_CLK falling
Polarity = 0, Phase = 1,
0
Input Setup Time, SPI0_SIMO valid
to SPI0_CLK rising
15
t
su(SIMO_SPC)S
before
ns
Polarity = 1, Phase = 0,
receive edge of SPI0_CLK
0
to SPI0_CLK rising
Polarity = 1, Phase = 1,
0
to SPI0_CLK falling
Polarity = 0, Phase = 0,
5
from SPI0_CLK falling
Polarity = 0, Phase = 1,
5
Input Hold Time, SPI0_SIMO valid
from SPI0_CLK rising
16
t
ih(SPC_SIMO)S
after
ns
Polarity = 1, Phase = 0,
receive edge of SPI0_CLK
5
from SPI0_CLK rising
Polarity = 1, Phase = 1,
5
from SPI0_CLK falling
(1)
P = SYSCLK2 period
(2)
First bit may be MSB or LSB depending upon SPI configuration. SO(0) refers to first bit and SO(n) refers to last bit output on
SPI0_SOMI. SI(0) refers to the first bit input and SI(n) refers to the last bit input on SPI0_SIMO.
(3)
Measured from the termination of the write of new data to the SPI module, In analyzing throughput requirements, additional internal bus
cycles must be accounted for to allow data to be written to the SPI module by the DSP CPU.
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