MX98741 查看數據表（PDF） - Macronix International

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MX98741

XRC 100 BASE-TX/FX REPEATER CONTROLLER

Macronix International 

F. Expansion Port Interface

MX98741

TXCLK

ANYACT

JAMO

EDATENL

JAMI

EXTCRS

EDATOE

EDAT

T81

T82

T83

T87

T84

T85

T86

/I/

/J/

/K/

/D1/

T81

T82

T83

/T/

/R/

Figure 8-9 Expansion Port Timing Relationship

Symbol

T81

T82

T83

T84

T85a

T85b

T86

T87

Description

TXCLK rising to ANYACT assert/deassert

TXCLK rising to JAMO assert /deassert

ANYACT assert to EDATENL assert (Note)

TXCLK rising to EDATOE assert

EDAT to TXCLK delay time (Output by MX98741)

EDAT to TXCLK hold time (Input by MX98741)

EDAT to TXCLK setup time (Input by MX98741)

EDATENL asserted to TXCLK rising setup time

MIN.

-

-

-

-

12

4

2

5

MAX.

18

13

17

25

26

-

-

-

UNIT

ns

ns

ns

ns

ns

ns

ns

ns

Note :

If the external arbitor cannot generate EDATENL signals within 35 ns form TXCLK rising edge (or 17 ns after

ANYACT is asserted in figure 9-9) for some reason, EDAT has to be delayed by one TXCLK cycle. Consequently, the

longer the delay time changes the repeater from Class II to Class I. A 7ns PAL is suggested to be used for external

arbitor to minimize the delay.

P/N:PM0342

REV. 1.4, NOV. 07, 1996

31

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