MEC1322 datasheet(421/456 Pages) MICROCHIP

Part #	MEC1322

Description	Keyboard and Embedded Controller for Notebook PC

PDF	456 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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 2014 - 2015 Microchip Technology Inc.

DS00001719D-page 421

MEC1322

38.18 Serial Debug Port Timing

FIGURE 38-31:

SERIAL DEBUG PORT TIMING PARAMETERS

Note 38-15

When the clock divider for the embedded controller is an odd number value greater than 2h, then

tCLK-L = tCLK-H + 15 ns. When the clock divider for the embedded controller is 0h, 1h, or an even

number value greater than 2h, then tCLK-L = tCLK-H.

TABLE 38-24: SERIAL DEBUG PORT INTERFACE TIMING PARAMETERS

Name

Description

MIN

TYP

MAX

Units

fclk

TFDP Clock frequency (Note 38-15)6

MHz

TFDP Clock Period.

1/fclk

μs

tOD

TFDP Data output delay after falling edge of MSCLK.

nsec

tOH

TFDP Data hold time after falling edge of TFDP Clock

tP - tOD

nsec

tCLK-L

TFDP Clock Low Time

tP/2 - 3

tP/2 + 3

nsec

tCLK-H TFDP Clock high Time (see Note 38-15)tP/2 - 3

tP/2 + 3

nsec

tOD

tOH

tCLK-L

tCLK-H

fCLK

TFDP Clock

TFDP Data

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