82596CA Ver la hoja de datos (PDF) - Intel

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82596CA

HIGH-PERFORMANCE 32-BIT LOCAL AREA NETWORK COPROCESSOR

Intel 

TRANSMIT RECEIVE CLOCK PARAMETERS (Continued)

Symbol

Parameter

20 MHz

Min

Max

INTERFRAME SPACING PARAMETERS

T71

Interframe Delay

EXTERNAL LOOPBACK-PIN PARAMETERS

T72

TXC Low to LPBK Low

T36

T73

TXC Low to LPBK High

T36

NOTES

1 Special MOS levels VCIL e 0 9V and VCIH e 3 0V

2 Manchester only

3 Manchester Needs 50% duty cycle

4 1 TTL load a 50 pF

5 1 TTL load a 100 pF

6 NRZ only

7 Abnormal end of transmission CTS expires before RTS

8 Normal end to transmission

9 Programmable value

T71 e NIFS  T36

where NIFS e the IFS configuration value

(if NIFS is less than 12 then NIFS is forced to 12)

10 Programmable value

T64 e (NCDF  T36) a x  T36

(If the collision occurs after the preamble)

where

NCDF e the collision detect filter configuration value

and

x e 12 13 14 or 15

11 T68 e 32  T36

12 Programmable value

T67 e (NCSF  T36) a x  T36

where NCSF e the Carrier Sense Filter configuration

value and

x e 12 13 14 or 15

13 To guarantee recognition on the next clock

82596CA

Notes

9

4

4

65

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