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MX98L715BEC

3.3V SINGLE CHIP FAST ETHERNET NIC CONTROLLER

Macronix International 

MX98L715BEC

Field

11

10

9

8

7

6

5

4

3

2

1

0

Name

GTE

ETI

RWT

RPS

RU

RI

UNF

LPANCI

TJT

TU

TPS

TI

Description

General Purpose Timer Expired, indicating CSR11 counter has expired.

Early Transmit Interrupt, indicating the packet to be transmitted was fully transferred to

internal TX FIFO. CSR5<0> will automatically clears this bit.

Receive Watchdog Time-out, reflects the network line status where receive watchdog

timer has expired while the other node is still active on the network.

Write only, when written with any value, MX98L715BEC reads receive descriptor list in

host memory pointed by CSR4 and processes the list.

Receive Buffer Unavailable, the receive process is suspended due to the next

descriptor in the receive list is owned by host. If no receive poll command is issued, the

reception process resumes when the next recognized incoming frame is received.

Receive Interrupt, indicating the completion of a frame reception.

Transmit Underflow, indicating transmit FIFO has run empty before the completion of a

packet transmission.

When autonegotiation is not enabled ( CSR14<7>=0 ), this bit indicates that the 10

Base-T link integrity test has completed successfully, after the link was down. This bit is

also set as as a result of writing 0 to CSR14<12> ( Link Test Enable ).

When Autonegotiation is enabled ( CSR14<7> =1 ) , this bit indicates that the autonegotiation

has completed ( CSR12<14:12>=5 ). CSR12 should then be read for a link status report.

This bit is only valid when CSR6<18>=0, i.e. 10 Base-T port is selected Link Fail interrupt

( CSR5<12> ) will automatically clears this bit.

Transmit Jabber Timeout, indicating the MX98715 has been excessively active. The

transmit process is aborted and placed in the stopped state. TDES0<1> is also set.

Transmit Buffer Unavailable, transmit process is suspended due to the next descriptor in

the transmit list is owned by host.

Transmit Process Stopped.

Transmit Interrupt. indicating a frame transmission was completed.

P/N:PM0695

REV. 0.3, MAR. 30, 2001

20

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