AM3351 datasheet(209/252 Pages) TI1

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AM3359, AM3358, AM3357, AM3356, AM3354, AM3352, AM3351

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SPRS717J – OCTOBER 2011 – REVISED APRIL 2016

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Peripheral Information and Timings

7.11.2 McASP Electrical Data and Timing

Table 7-77. McASP Timing Conditions

PARAMETER

MIN

TYP

MAX

UNIT

Input Conditions

Input signal rise time

1(1)

4(1)

Input signal fall time

1(1)

4(1)

Output Condition

CLOAD

Output load capacitance

(1) Except when specified otherwise.

Table 7-78. Timing Requirements for McASP(1)

(see Figure 7-86)

NO.

OPP100

OPP50

UNIT

MIN

MAX

MIN

MAX

tc(AHCLKRX)

Cycle time, McASP[x]_AHCLKR and

McASP[x]_AHCLKX

tw(AHCLKRX)

Pulse duration, McASP[x]_AHCLKR and

McASP[x]_AHCLKX high or low

0.5P - 2.5(2)

tc(ACLKRX)

Cycle time, McASP[x]_ACLKR and

McASP[x]_ACLKX

tw(ACLKRX)

Pulse duration, McASP[x]_ACLKR and

McASP[x]_ACLKX high or low

0.5R - 2.5(3)

tsu(AFSRX-

ACLKRX)

Setup time, McASP[x]_AFSR and

McASP[x]_AFSX input valid before

McASP[x]_ACLKR and

McASP[x]_ACLKX

ACLKR and

ACLKX int

11.5

15.5

ACLKR and

ACLKX ext in

ACLKR and

ACLKX ext out

th(ACLKRX-

AFSRX)

Hold time, McASP[x]_AFSR and

McASP[x]_AFSX input valid after

McASP[x]_ACLKR and

McASP[x]_ACLKX

ACLKR and

ACLKX int

-1

ACLKR and

ACLKX ext in

0.4

ACLKR and

ACLKX ext out

0.4

tsu(AXR-ACLKRX)

Setup time, McASP[x]_AXR input

valid before McASP[x]_ACLKR and

McASP[x]_ACLKX

ACLKR and

ACLKX int

11.5

15.5

ACLKR and

ACLKX ext in

ACLKR and

ACLKX ext out

th(ACLKRX-AXR)

Hold time, McASP[x]_AXR input

valid after McASP[x]_ACLKR and

McASP[x]_ACLKX

ACLKR and

ACLKX int

-1

ACLKR and

ACLKX ext in

0.4

ACLKR and

ACLKX ext out

0.4

(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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