AM79C984AKC 데이터 시트보기 (PDF) - Advanced Micro Devices

부품명

상세내역

제조사

AM79C984AKC

enhanced Integrated Multiport Repeater (eIMR™)

Advanced Micro Devices 

PRELIMINARY

SWITCHING CHARACTERISTICS (continued)

Parameter

Symbol

Parameter Description

Test Conditions

Min

Max

Unit

Twisted Pair Port Timing

tTXTD CLK Rising Edge to TXD± Transition Delay

–

50

ns

tTETD Transmit End of Transmission

250

375

ns

tPWKRD RXD Pulse Width Maintain/Turn-off

|VIN|>|VTHS| (Note 6)

136

200

ns

Threshold

tPERLP Idle Signal Period

tPWLP Idle Link Test Pulse Width

Control Port Timing

8

24

ms

75

120

ns

tSCLK

tSCLKH

tSCLKL

tSCLKR

tSCLKF

tSISET

tSIHLD

tSODLY

SCLK Clock Period

SCLK Clock HIGH

SCLK Clock LOW

SCLK Clock Rise Time

SCLK Clock Fall Time

SI Input Setup Time to SCLK Rising Edge

SI Input Hold Time from SCLK Rising Edge

SO Output Delay from SCLK Rising Edge CL = 100 pF

100

–

ns

30

–

ns

30

–

ns

–

10

ns

–

10

ns

10

–

ns

10

–

ns

–

40

ns

Notes:

1. Parameter not tested.

2. DI pulses narrower than tPWODI (min) will be rejected; pulses wider than tPWODI (max) will turn internal DI carrier sense on.

3. DI pulses narrower than tPWKDI (min) will maintain internal DI carrier on; pulses wider than tPWKDI (max) will turn internal DI

carrier sense off.

4. CI pulses narrower than tPWOCI (min) will be rejected; pulses wider than tPWOCI (max) will turn internal CI carrier sense on.

5. CI pulses narrower than tPWKCI (min) will maintain internal CI carrier on; pulses wider than tPWKCI (max) will turn internal CI

carrier sense off.

6. RXD pulses narrower than tPWKRD (min) will maintain internal RXD carrier sense on; a pulse wider than tPWKRD (max) will turn

RXD carrier sense off.

Am79C984A

35

Share Link: