Electrical Specifications
5.14.2
McBSP General-Purpose I/O Timing
Table 5–23 and Table 5–24 assume testing over recommended operating conditions (see Figure 5–23).
Table 5–23. McBSP General-Purpose I/O Timing Requirements
MIN
tsu(BGPIO-COH) Setup time, BGPIOx input mode before CLKOUT high†
th(COH-BGPIO)
Hold time, BGPIOx input mode after CLKOUT high†
† BGPIOx refers to BCLKRx, BFSRx, BDRx, BCLKXx, or BFSXx when configured as a general-purpose input.
7
0
MAX
UNIT
ns
ns
Table 5–24. McBSP General-Purpose I/O Switching Characteristics
PARAMETER
td(COH-BGPIO)
Delay time, CLKOUT high to BGPIOx output mode‡
‡ BGPIOx refers to BCLKRx, BFSRx, BCLKXx, BFSXx, or BDXx when configured as a general-purpose output.
MIN
–2
MAX
4
UNIT
ns
tsu(BGPIO-COH)
CLKOUT
td(COH-BGPIO)
th(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 5–23. McBSP General-Purpose I/O Timings
November 2001 – Revised July 2003
SPRS007B
83
TI [ TEXAS INSTRUMENTS ]
