AM3359, AM3358, AM3357, AM3356, AM3354, AM3352
SPRS717H – OCTOBER 2011 – REVISED MAY 2015
7.11.2 McASP Electrical Data and Timing
Table 7-77. McASP Timing Conditions
PARAMETER
MIN
TYP
MAX
UNIT
Input Conditions
t
R
Input signal rise time
ns
t
F
Input signal fall time
ns
Output Condition
C
LOAD
Output load capacitance
15
30
pF
(1) Except when specified otherwise.
Table 7-78. Timing Requirements for McASP
(see
OPP100
OPP50
NO.
UNIT
MIN
MAX
MIN
MAX
Cycle time, McASP[x]_AHCLKR and
1
t
c(AHCLKRX)
20
40
ns
McASP[x]_AHCLKX
Pulse duration, McASP[x]_AHCLKR and
2
t
w(AHCLKRX)
0.5P - 2.5
0.5P - 2.5
ns
McASP[x]_AHCLKX high or low
Cycle time, McASP[x]_ACLKR and
3
t
c(ACLKRX)
20
40
ns
McASP[x]_ACLKX
Pulse duration, McASP[x]_ACLKR and
4
t
w(ACLKRX)
0.5R - 2.5
0.5R - 2.5
ns
McASP[x]_ACLKX high or low
ACLKR and
11.5
15.5
ACLKX int
Setup time, McASP[x]_AFSR and
t
su(AFSRX-
McASP[x]_AFSX input valid before
ACLKR and
5
4
6
ns
ACLKRX)
McASP[x]_ACLKR and
ACLKX ext in
McASP[x]_ACLKX
ACLKR and
4
6
ACLKX ext out
ACLKR and
-1
-1
ACLKX int
Hold time, McASP[x]_AFSR and
t
h(ACLKRX-
McASP[x]_AFSX input valid after
ACLKR and
6
0.4
0.4
ns
AFSRX)
McASP[x]_ACLKR and
ACLKX ext in
McASP[x]_ACLKX
ACLKR and
0.4
0.4
ACLKX ext out
ACLKR and
11.5
15.5
ACLKX int
Setup time, McASP[x]_AXR input
ACLKR and
7
t
su(AXR-ACLKRX)
valid before McASP[x]_ACLKR and
4
6
ns
ACLKX ext in
McASP[x]_ACLKX
ACLKR and
4
6
ACLKX ext out
ACLKR and
-1
-1
ACLKX int
Hold time, McASP[x]_AXR input
ACLKR and
8
t
h(ACLKRX-AXR)
valid after McASP[x]_ACLKR and
0.4
0.4
ns
ACLKX ext in
McASP[x]_ACLKX
ACLKR and
0.4
0.4
ACLKX ext out
(1) ACLKR internal: ACLKRCTL.CLKRM = 1, PDIR.ACLKR = 1
ACLKR external input: ACLKRCTL.CLKRM = 0, PDIR.ACLKR = 0
ACLKR external output: ACLKRCTL.CLKRM = 0, PDIR.ACLKR = 1
ACLKX internal: ACLKXCTL.CLKXM = 1, PDIR.ACLKX = 1
ACLKX external input: ACLKXCTL.CLKXM = 0, PDIR.ACLKX = 0
ACLKX external output: ACLKXCTL.CLKXM = 0, PDIR.ACLKX = 1
(2) P = McASP[x]_AHCLKR and McASP[x]_AHCLKX period in nanoseconds (ns).
(3) R = McASP[x]_ACLKR and McASP[x]_ACLKX period in ns.
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Peripheral Information and Timings
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