DP83902A datasheet(64/70 Pages) NSC

部件名	DP83902A

功能描述	ST-NICTM Serial Network Interface Controller for Twisted Pair

Download	70 Pages

Scroll/Zoom	100%

制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

标志

64 / 70 page

150 Switching Characteristics AC Specs DP83902A Note All Timing is Preliminary (Continued)

Remote DMA (Write Cycle) Recovery Time

TLF11157 – 45

Symbol

Parameter

Min

Max

Units

bprqh

Bus Clock to Port Request High (Note 1)

42

ns

wprql

WACK to Port Request Low

50

ns

wackw

WACK Pulse Width

25

ns

bprdl

Bus Clock to Port Read Low (Note 2)

55

ns

bprdh

Bus Clock to Port Read High

40

ns

wprq

Remote Write Port Request to Port

12

BSCK

Request Time (Notes 3 4 5)

Note 1

The first port request is issued in response to the remote write command It is subsequently issued on T1 clock cycles following completion of remote DMA

cycles

Note 2

The start of the remote DMA write following WACK is dependent on where WACK is issued relative to BSCK and whether a local DMA is pending

Note 3

Assuming wackw k 1 BSCK and no local DMA interleave no CS immediate BACK and WACK goes high before T4

Note 4

WACK must be high for a minimum of 7 BSCK

Note 5

This is not a measured value but guaranteed by design

Reset Timing

TLF11157 – 64

Symbol

Parameter

Min

Max

Units

rstw

Reset Pulse Width (Note 1)

8

BSCK Cycles or TXC Cycles

(Note 2)

Note 1

The RESET pulse requires that BSCK and TXC be stable On power up RESET should not be raised until BSCK and TXC have become stable Several

registers are affected by RESET Consult the register descriptions for details

Note 2

The slower of BSCK or TXC clocks will determine the minimum time for the RESET signal to be low

If BSCK k TXC then RESET e 8 c BSCK

If TXC k BSCK then RESET e 8 c TXC

64

类似零件编号 - DP83902A

制造商	部件名	数据表	功能描述
Pulse A Technitrol Comp...	DP83902A	253Kb / 12P	LAN DISCRETE TRANSFORMER MODULES G003.U 2/07

More results

类似说明 - DP83902A

制造商	部件名	数据表	功能描述
Winbond	W89C926	395Kb / 48P	PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER
National Semiconductor ...	DP83905	1Mb / 80P	AT Local Area Network Twisted-Pair Interface Controller
	DP83934CVUL-20	1Mb / 104P	MHz SONICTM-T Systems-Oriented Network Interface Controller with Twisted Pair Interface
	DP83936AVUL-20	1Mb / 104P	Full Duplex SONICTM-T Systems-Oriented Network Interface Controller with Twisted Pair Interface
	DP83901A	705Kb / 62P	Serial Network Interface Controller
Gamewell-FCI by Honeywe...	RPT-E3-UTP	46Kb / 1P	Network Repeaters, unshielded, twisted-pair
Texas Instruments	DP83934	1Mb / 106P	[Old version datasheet] DP83934CVUL-20/25 MHz SONIC(TM)-T Systems-Oriented Network Interface Controller with Twisted Pair Interface
Winbond	W89C940	353Kb / 61P	ELANC-PCI (TWISTED-PAIR ETHER-LAN CONTROLLER WITH PCI INTERFACE)
National Semiconductor ...	DP8391	175Kb / 10P	Serial Network Interface
List of Unclassifed Man...	83C694	204Kb / 33P	TWISTED PAIR INTERFACE AND MACHESTER ENCODER/DECODER