Acer ASPIRE 553G, Service Manual

Page: 40 / 239

30 Chapter 1
LAN Interface
Keyboard
Media Card Reader
Item Specification
LAN Chipset ATHEROS AR8151L
Package 40pin QFN
Features • The AR8151L is the fifth generation Gigabit Ethernet
(GbE) controller solution from Atheros. It is an ultra-high
performance, ultralow cost, and ultra-low power fully
integrated 10/100/1000 Mbps NIC/LOM Ethernet
controller perfectly suited for both PC and embedded
applications.
• The AR8151L combines a 10/100/1000BASE-T GbE
media access controller (MAC), a triplespeed Ethernet
physical layer transceiver (PHY), a PCI Express bus
interface, and a 25 MHz shared-source clock input and
the AR8151L contains an embedded 256 byte Onetime
Program able (OTP) memory (using ondie eFuse
technology) to offer an ultra-low cost solution to the
Ethernet market.
• The AR8151L is compsliant with IEEE 802.3u
specification for 10/100 Mbps Ethernet and IEEE
802.3ab specification for 1000 Mbps Ethernet. The
AR8151L device combines pulse shaping, Tx/Rx PCS,
echo canceller, NEXT canceller, equalizer, decoder, and
timing recovery functions to deliver robust signal
performance in noisy environments.
• The AR8151L GbE controller supports checksum offload
features for IP, TCP, and UDP, lowering CPU utilization
and optimizing network performance.
• The AR8151L also supports advanced power
management functions, including Wake-On- LAN (WOL)
and AMD Magic Packet™.
Item Specification
Type ACER AC7T_A10B AC7T Internal 17
Total number of keypads 103/104/107
Windows logo key Yes
Internal & external keyboard work
simultaneously Yes
Features • Supports application keys for Windows 7 version
Item Specification
Chipset AU6437-GBL -GR
Package LQFP
Features • Fully compatible with USB2.0 High Speed and backward
compatible with USB1.1 specifications
• Supports multiple flash card interfaces, including SD/
MMC/xD/MS.
• Supports single LUN
• Supports both Windows and Mac OS