DM9008F datasheet(11/68 Pages) ETC

11 / 68 page

DM9008

ISA/Plug & Play Super Ethernet Contoller

Final

Version :DM9008-DS-F02

June 14, 2000

Configuration Register B (CRB)

Configuration Register B can be read at address 0BH in Page 0 of ENC, and can be written by following a read to address 0BH with a

write to address 0BH. If a write to address 0BH is performed without a previous read to 0BH, it will be regarded as a write to register

RBCR1 of ENC.

765

432

BUSERR

CHRDY

GDLINK

PHYS1

PHYS0

Bit

Symbol

Description

0, 1

PHYS0

PHYS1

Physical Media Interfaces: These two bits determine which type of physical interface the

DM9008 is using, as shown below:

bit1

bit0

Interface

Set to 10BASE-T; BNCEN = low

Set to 10BASE2; BNCEN = high

Set to 10BASE5; BNCEN = low

Auto-detection media

GDLINK

Read: Link status. One indicates Link OK; zero indicates Link Fail

Reserved

CHRDY

IOCHRDY from IOR or IOW or from BALE: When low, DM9008 will pull IOCHRDY low after

the command strobe. If high, IOCHRDY will be pulled low after BALE goes high

BUSERR

Bus Error: This bit shows that DM9008 has detected an ISA bus error. This bit will be high if

DM9008 inserts wait states into a system access and the system terminates the cycle without

inserting wait states

Reserved

DM9008F Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers

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