DP83936AVF datasheet(90/104 Pages) NSC

Part #	DP83936AVF

Description	Full Duplex SONICTM-T Systems-Oriented Network Interface Controller with Twisted Pair Interface

PDF	104 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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90 / 104 page

90 AC and DC Specifications (Continued)

BUS RETRY

TLF12597 – 70

Number

Parameter

20 MHz

25 MHz

33 MHz

Units

Min

Max

Min

Max

Min

Max

T41

Bus Retry Synchronous Setup Time to BSCK

543

(Note 3)

T41a

Bus Retry Asynchronous Setup Time

654

to BSCK (Note 3)

T42

Bus Retry Hold Time from BSCK (Note 2)

Note 1

Depending upon the mode the SONIC-T will assert and deassert HOLD from the rising or falling edge of BSCK

Note 2

Unless Latched Bus Retry mode is set (LBR in the Data Configuration Register Section 432) BRT must remain asserted until after the Th state If

Latched Bus Retry mode is used BRT does not need to satisfy T42

Note 3

T41 is for synchronous bus retry and T41a is for asynchronous bus retry (see Section 432 bit 15 Extended Bus Mode) Since T41a is an asynchronous

setup time it is not necessary to meet it but doing so will guarantee that the bus exception occurs in the current memory transfer not the next

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DP83936AVF Datasheet(PDF) 90 Page - National Semiconductor (TI)