T M S3 2 0 VC5 402
F I X ED ĆPOI N T DI G I TAL S I GN AL PRO CE SSO R
SPRS079E – OCTOBER 1998 – REVISED AUGUST 2000
multichannel buffered serial port timing (continued)
timing requirements for McBSP general-purpose I/O (see Figure 30)
MIN
9
MAX
UNIT
ns
†
Setup time, BGPIOx input mode before CLKOUT high
t
t
su(BGPIO-COH)
†
Hold time, BGPIOx input mode after CLKOUT high
0
ns
h(COH-BGPIO)
†
BGPIOx refers to BCLKRx, BFSRx, BDRx, BCLKXx, or BFSXx when configured as a general-purpose input.
switching characteristics for McBSP general-purpose I/O (see Figure 30)
PARAMETER
MIN
MAX
UNIT
‡
t
Delay time, CLKOUT high to BGPIOx output mode
0
5
ns
d(COH-BGPIO)
‡
BGPIOx refers to BCLKRx, BFSRx, BCLKXx, BFSXx, or BDXx when configured as a general-purpose output.
t
su(BGPIO-COH)
t
d(COH-BGPIO)
CLKOUT
t
h(COH-BGPIO)
BGPIOx Input
†
Mode
BGPIOx Output
‡
Mode
†
‡
BGPIOx refers to BCLKRx, BFSRx, BDRx, BCLKXx, or BFSXx when configured as a general-purpose input.
BGPIOx refers to BCLKRx, BFSRx, BCLKXx, BFSXx, or BDXx when configured as a general-purpose output.
Figure 30. McBSP General-Purpose I/O Timings
56
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