DM9621 datasheet(38/66 Pages) DAVICOM

tên linh kiện	DM9621

Giải thích chi tiết về linh kiện	USB2.0 to 10/100M Fast Ethernet Controller

PDF	66 Pages

Scroll/Zoom	100%

nhà sản xuất	DAVICOM [Davicom Semiconductor, Inc.]

Trang chủ	http://www.davicom.com.tw

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38 / 66 page

DM9621

USB2.0 to Fast Ethernet Controller

Preliminary

Version: DM9621 -14-DS-P02

February 23, 2011

Force to 0, in application.

PD_value

0,RW

Power down control value

Decision the value of each field Register 13H

1: power down

0: normal

6.13 DSP Control (DSP_CTRL) – 1BH

Bit

Bit Name

Default

Description

15~0

DSP_CTRL

0, RW

DSP CONTROL

For internal testing only

6.14 Power Saving Control Register (PSCR) – 1DH

Bit

Bit Name

Default

Description

15-12

RESERVED

0,RO

RESERVED

PREAMBLEX

0,RW

Preamble Saving Control

when both bit 10and 11 of register 14H are set, the 10BASE-T

transmit preamble count is reduced.

1: 12-bit preamble is reduced.

0: 22-bit preamble is reduced.

AMPLITUDE

0,RW

Transmit Amplitude Control Disabled

1: when cable is unconnected with link partner, the TX amplitude is

reduced for power saving.

0: disable Transmit amplitude reduce function

TX_PWR

0.RW

Transmit Power Saving Control Disabled

1: when cable is unconnected with link partner, the driving current

of transmit is reduced for power saving.

0: disable transmit driving power saving function

8-0

RESERVED

0,RO

RESERVED

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