VT6508 datasheet(38/48 Pages) ETC1

38 / 48 page

VIA Technologies, Inc.

Preliminary VT6508 Datasheet

-38-

02H

EEPROM device address

bit 7-4 : device type id (default as1010)

bit 3-1 : device id

bit 0 : r/w command

value 0: write; value 1: read

EEDEVADDR

[7:0]

R/W

03H

EEPROM status register

EESTS[0]: value 0: idle, 1: busy (r/w or auto-init

in progress)

EESTS[1]: value 1: r/w complete without error

(cleared by register read)

EESTS[2]: value 1: r/w ack error

EESTS[3]: value 0: no init error, 1: init err

EESTS

[3:0]

R/O

0600H CPU interface

00H

interrupt status/clear register

bit 0: PHY command complete interrupt

bit 1: EEPROM command interrupt

bit 2: PHY auto-polling link status change

notification

bit 3: EEPROM initialization complete interrupt

bit 4: interrupt indication for CPU IO port

receiving an incoming packet from some

Ethernet port, that is ready to be received

by CPU via IDE.

bit 5: interrupt indication for CPU IO port finishing

the transmission of an outgoing packet that

was sent by CPU via IDE.

bit 6: interrupt indication for re-autonegotiation

caused by port speed mismatch

Note that writing 1 to the corresponding register

bits will clear that interrupts.

IRQSTS

[5:0]

[6:0]

R/W

01H

interrupt mask register

bit 0: PHY command complete interrupt mask

bit 1: EEPROM command interrupt mask

bit 2: PHY auto-polling link status change

notification mask

bit 3: EEPROM initialization complete interrupt

mask

bit 4: interrupt mask for CPU IO port

receiving an incoming packet from some

Ethernet port, that is ready to be received

by CPU via IDE.

bit 5: interrupt mask for CPU IO port finishing

the transmission of an outgoing packet that

was sent by CPU via IDE.

bit 6: interrupt indication for re-autonegotiation

caused by port speed mismatch

Note: value 0 means “ masked” , value 1 means

“ not masked” . The default is “ masked” so that

software has to poll IRQSTS to check if there are

any pending interrupts.

IRQMASK

[5:0]

[6:0]

R/W

VT6508 Datasheet(PDF) 38 Page - List of Unclassifed Manufacturers

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