TMS320VC5409 Fixed-Point Digital Signal ... - Texas Instruments

Documentation Support5.13.2 McBSP General-Purpose I/O TimingTable 5−21 and Table 5−22 assume testing over recommended operating conditions (see Figure 5−22).Table 5−21. McBSP General-Purpose I/O Timing RequirementsMIN MAX UNITtsu(BGPIO-COH) Setup time, BGPIOx input mode before CLKOUT high† 9 nsth(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.Table 5−22. McBSP General-Purpose I/O Switching CharacteristicsPARAMETER MIN MAX UNITtd(COH-BGPIO) Delay time, CLKOUT high to BGPIOx output mode‡ −10 10 ns‡ BGPIOx refers to BCLKRx, BFSRx, BCLKXx, BFSXx, or BDXx when configured as a general-purpose output.tsu(BGPIO-COH)td(COH-BGPIO)CLKOUTBGPIOx InputMode†th(COH-BGPIO)BGPIOx OutputMode‡† 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 5−22. McBSP General-Purpose I/O TimingsApril 1999 − Revised October 2008SPRS082F73