DP83953 datasheet(39/90 Pages) NSC

tên linh kiện	DP83953

Giải thích chi tiết về linh kiện	Repeater Interface Controller with Security Features, Internal Drivers and Integrated Filters

PDF	90 Pages

Scroll/Zoom	100%

nhà sản xuất	NSC [National Semiconductor (TI)]

Trang chủ	http://www.national.com

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39 / 90 page

5.0 HUB MANAGEMENT SUPPORT (Continued)

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Table 6. Hub Management Status Field

Packet status Register

PSR

PSR(0)

PCOMPD

resv

PSR(1)

CRCER

FAE

COL

CLN

PA3

PA2

PA1

PA0

PSR(2)

OWC

NSFD

PLER

ELBER

JAB

CBT9

CBT8

PSR(3)

Collision Bit Timer

CBT7

CBT6

CBT5

CBT4

CBT3

CBT2

CBT1

CBT0

PSR(4)

Lower Repeat Byte Count

RBY7

RBY6

RBY5

RBY4

RBY3

RBY2

RBY1

RBY0

PSR(5)

Upper Repeat Byte Count

Note 2

MPS=0

----------

MPS=1

RBY15

------------

resv

RBY14

-----------

resv

RBY13

-----------

resv

RBY12

-----------

SAM

RBY11

-----------

RUNT

RBY10

-----------

RBY10

RBY9

----------

RBY9

RBY8

-----------

RBY8

PSR(6)

Inter Frame Gap Bit Timer

IBT7

IBT6

IBT5

IBT4

IBT3

IBT2

IBT1

IBT0

Note 1: These registers may only be reliably accessed via the management interface. Due to the nature of these registers they may not be accessed (read

or write cycles) via the processor interface.

Note 2: When MPS (Modify Packet Status) bit in the Global Security Register is:

MPS=0, Do not modify Packet Status Register 5. The RIC2A PSR5 is the same as the RIC PSR5.

MPS=1, The PSR5 register is modified in the RIC2A.

Figure 14.

Management Bus Packet Status Register TIming

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