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Texas Instruments TMS320VC5402 User Manual

Page 56

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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

tsu(BGPIO-COH)

Setup time, BGPIOx input mode before CLKOUT high†

9

ns

th(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

td(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.

tsu(BGPIO-COH)

th(COH-BGPIO)

td(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