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TMS320VC5402
FIXEDĆPOINT DIGITAL SIGNAL PROCESSOR
SPRS079E – OCTOBER 1998 – REVISED AUGUST 2000
56
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
multichannel buffered serial port timing (continued)
timing requirements for McBSP general-purpose I/O (see Figure 30)
MIN MAX UNIT
t
su(BGPIO-COH)
Setup time, BGPIOx input mode before CLKOUT high
†
9 ns
t
h(COH-BGPIO)
Hold time, BGPIOx input mode after CLKOUT high
†
0 ns
†
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
d(COH-BGPIO)
Delay time, CLKOUT high to BGPIOx output mode
‡
0 5 ns
‡
BGPIOx refers to BCLKRx, BFSRx, BCLKXx, BFSXx, or BDXx when configured as a general-purpose output.
t
su(BGPIO-COH)
t
h(COH-BGPIO)
t
d(COH-BGPIO)
CLKOUT
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