AM1705_1004 Datasheet, PDF (90/155 Pages) Texas Instruments – AM1705 ARM Microprocessor

AM1705
SPRS657A – FEBRUARY 2010 – REVISED APRIL 2010
Table 6-45. McASP0 Switching Characteristics⁽¹⁾
No.
9 t_c(AHCLKRX)
10 t_w(AHCLKRX)
11 t_c(ACLKRX)
12 t_w(ACLKRX)
13 t_{d(ACLKRX-AFSRX)}
14 t_{d(ACLKX-AXRV)}
15 t_{dis(ACLKX-AXRHZ)}
PARAMETER
Cycle time, AHCLKR0 internal, AHCLKR0 output
Cycle time, AHCLKR0 external, AHCLKR0 output
Cycle time, AHCLKX0 internal, AHCLKX0 output
Cycle time, AHCLKX0 external, AHCLKX0 output
Pulse duration, AHCLKR0 internal, AHCLKR0 output
Pulse duration, AHCLKR0 external, AHCLKR0 output
Pulse duration, AHCLKX0 internal, AHCLKX0 output
Pulse duration, AHCLKX0 external, AHCLKX0 output
Cycle time, ACLKR0 internal, ACLKR0 output
Cycle time, ACLKR0 external, ACLKR0 output
Cycle time, ACLKX0 internal, ACLKX0 output
Cycle time, ACLKX0 external, ACLKX0 output
Pulse duration, ACLKR0 internal, ACLKR0 output
Pulse duration, ACLKR0 external, ACLKR0 output
Pulse duration, ACLKX0 internal, ACLKX0 output
Pulse duration, ACLKX0 external, ACLKX0 output
Delay time, ACLKR0 internal, AFSR output⁽⁷⁾
Delay time, ACLKX0 internal, AFSX output
Delay time, ACLKR0 external input, AFSR output⁽⁷⁾
Delay time, ACLKX0 external input, AFSX output
Delay time, ACLKR0 external output, AFSR output⁽⁷⁾
Delay time, ACLKX0 external output, AFSX output
Delay time, ACLKX0 internal, AXR0[n] output
Delay time, ACLKX0 external input, AXR0[n] output
Delay time, ACLKX0 external output, AXR0[n] output
Disable time, ACLKX0 internal, AXR0[n] output
Disable time, ACLKX0 external input, AXR0[n] output
Disable time, ACLKX0 external output, AXR0[n] output
MIN
20
20
20
20
(AHR/2) – 2.5⁽²⁾
(AHR/2) – 2.5⁽²⁾
(AHX/2) – 2.5⁽³⁾
(AHX/2) – 2.5⁽³⁾
greater of 2P or 20 ns⁽⁴⁾
greater of 2P or 20 ns⁽⁴⁾
greater of 2P or 20 ns⁽⁴⁾
greater of 2P or 20 ns⁽⁴⁾
(AR/2) – 2.5⁽⁵⁾
(AR/2) – 2.5⁽⁵⁾
(AX/2) – 2.5⁽⁶⁾
(AX/2) – 2.5⁽⁶⁾
0
0
3
3
3
3
0
2.75
3
0
3
3
(1) McASP0 ACLKX0 internal – ACLKXCTL.CLKXM = 1, PDIR.ACLKX = 1
ACLKX0 external input – McASP0 ACLKXCTL.CLKXM = 0, PDIR.ACLKX = 0
ACLKX0 external output – McASP0ACLKXCTL.CLKXM = 0, PDIR.ACLKX = 1
ACLKR0 internal – McASP0 ACLKR0CTL.CLKRM = 1, PDIR.ACLKR =1
ACLKR0 external input – McASP0 ACLKRCTL.CLKRM = 0, PDIR.ACLKR = 0
ACLKR0 external output – McASP0 ACLKRCTL.CLKRM = 0, PDIR.ACLKR = 1
(2) AHR - Cycle time, AHCLKR0.
(3) AHX - Cycle time, AHCLKX0.
(4) P = SYSCLK2 period
(5) AR - ACLKR0 period.
(6) AX - ACLKX0 period.
(7) McASP0 ACLKXCTL.ASYNC=1: Receiver is clocked by its own ACLKR0
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MAX
UNIT
ns
ns
ns
ns
6
6
11.7
ns
11.7
11.7
11.7
6
11.7
ns
11.7
6
11.7
ns
11.7
90
Peripheral Information and Electrical Specifications
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