TNETV2501INPGF datasheet(172/197 Pages) TI1

172 / 197 page

Electrical Specifications

172

December 2002 − Revised November 2008

SPRS206K

5.15.2

McBSP General-Purpose I/O Timings

Table 5−33 and Table 5−34 assume testing over recommended operating conditions (see Figure 5−34).

Table 5−33. McBSP General-Purpose I/O Timing Requirements

NO.

MIN

MAX

UNIT

M22

tsu(MGPIO–COH)

Setup time, MGPIOx input mode before CLKOUT high†‡

M23

th(COH–MGPIO)

Hold time, MGPIOx input mode after CLKOUT high†‡

† MGPIOx refers to CLKRx, FSRx, DRx, CLKXx, or FSXx when configured as a general-purpose input.

‡ In this case, CLKOUT reflects SYSCLK2. The CLKOUT Selection Register (CLKOUTSR) can be programmed to select SYSCLK2 as CLKOUT.

Table 5−34. McBSP General-Purpose I/O Switching Characteristics

NO.

PARAMETER

MIN

MAX

UNIT

M21

td(COH–MGPIO)

Delay time, CLKOUT high to MGPIOx output mode‡§

‡ In this case, CLKOUT reflects SYSCLK2. The CLKOUT Selection Register (CLKOUTSR) can be programmed to select SYSCLK2 as CLKOUT.

§ MGPIOx refers to CLKRx, FSRx, CLKXx, FSXx, or DXx when configured as a general-purpose output.

CLKOUT

MGPIO

Input Mode†

MGPIO

Output Mode‡

M22

M23

M21

† MGPIOx refers to CLKRx, FSRx, DRx, CLKXx, or FSXx when configured as a general-purpose input.

‡ MGPIOx refers to CLKRx, FSRx, CLKXx, FSXx, or DXx when configured as a general-purpose output.

Figure 5−34. McBSP General-Purpose I/O Timings

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