PM3386-BI 查看數據表（PDF） - PMC-Sierra

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PM3386-BI

DUAL GIGABIT ETHERNET CONTROLLER

PMC-Sierra 

RELEASED

DATASHEET

PMC-1991129

ISSUE 7

PM3386

DUAL GIGABIT ETHERNET CONTROLLER

Signal Name

TADR

PTPA

Direction

Input

Output

Pin No.

AE5

AF4

Function

POS-PHY Transmit PHY Address

The TADR signal is used with the PTPA

signal to poll the transmit FIFOs packet

available status.

When TADR is sampled on the rising edge

of TFCLK by the PM3386, the polled

packet available indication PTPA signal is

updated with the status of the port specified

by the TADR address on the following rising

edge of TFCLK.

TADR = 0 = channel 0

TADR = 1 = channel 1

TADR is sampled on the rising edge of

TFCLK.

POS-PHY Polled-PHY Transmit Packet

Available

PTPA transitions high when a predefined

(user programmable) minimum number of

bytes are available in the polled transmit

FIFO. Once high, PTPA indicates that the

transmit FIFO is not full. When PTPA

transitions low, it indicates that the transmit

FIFO is full or near full (user

programmable).

PTPA allows the polling of the PM3386

channel selected by TADR address pin.

The port which PTPA reports is updated on

the following rising edge of TFCLK after the

PM3386 channel address on TADR is

sampled by the PM3386 device.

PTPA is updated on the rising edge of

TFCLK.

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

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