TMS320VC5502 datasheet(152/189 Pages) TI

tên linh kiện	TMS320VC5502

Giải thích chi tiết về linh kiện	Fixed-Point Digital Signal Processor

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5.12

General-Purpose Input/Output (GPIOx) Timings

CLKOUT

GPIOx

Input Mode

GPIOx

Output Mode

TMS320VC5502

Fixed-Point Digital Signal Processor

SPRS166H – APRIL 2001 – REVISED NOVEMBER 2004

Table 5-22 and Table 5-23 assume testing over recommended operating conditions(see Figure 5-26).

Table 5-22. GPIO Pins Configured as Inputs Timing Requirements

VC5502-200

VC5502-300

NO.

UNIT

MIN

MAX

tsu(GPIO-COH)

Setup time, GPIOx input valid before CLKOUT high(1)

th(COH-GPIO)

Hold time, GPIOx input valid after CLKOUT high(1)

(1)

In this case, CLKOUT reflects SYSCLK1. The CLKOUT Selection Register (CLKOUTSR) can be programmed to select SYSCLK1 as

CLKOUT.

Table 5-23. GPIO Pins Configured as Outputs Switching Characteristics

VC5502-200

VC5502-300

NO.

PARAMETER

UNIT

MIN

MAX

td(COH-GPIO)

Delay time, CLKOUT high to GPIOx output change(1)

(1)

In this case, CLKOUT reflects SYSCLK1. The CLKOUT Selection Register (CLKOUTSR) can be programmed to select SYSCLK1 as

CLKOUT.

Figure 5-26. General-Purpose Input/Output (GPIOx) Signal Timings

152

Specifications

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