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AC101L
PRODUCT
AC101L FEATURES SUMMARY OF
Brief
BENEFITS
10/100BASE-TX SINGLE-PHY TRANSCEIVER
Single port 10BASE-T/100BASE-TX/100BASE-FX, * Full Duplex-or Half Duplex * Power Supply: 2.5V or 3.3V Integrated voltage regulator to allow operation from * single supply source * Single port - MII or RMII * HP Auto-MDIX small package * Verysq. mm footprint - 48-pin TQFP * 49 * Very low power - Typical < 200mW (100BASE-TX) * Fully compliant with IEEE 802.3 / 802.3u * Baseline wander correction * Multi-function programmable LED outputs * Reverse polarity detection and correction * Read/write register bit indication * Industrial temperature (3.3V only) Fully * to TXintegrated TX/FX PHY transceiver (MII/RMIImagnetics or FX-Optics) Very low system cost * * Simplified board design * HP Auto-MDIX detects and corrects crossed cables * Automatically accommodates link partner polarity * Very small footprint to allow reduced real-estate in space-critical applications such as PCMCIA cards * Industry's lowest power Fast Ethernet PHY * Accommodates either a 3.3V or a 2.5V power supply * Low power and intelligent power management * Standby mode to conserve power
NIC 10/100 BASE-TX Application
PC Motherboard 10/100BASE-TX Application
CPU
CPU
Chipset
Chipset
MII Bus
TX AC101L
CNR/ACR Slot
RX
PCI Bus
MAC MII AC101L Control
TX RX
PCI Bus
PCI Slot 1 PCI Slot 2 PCI Slot 3 PCI Slot 4
ALTIMA COMMUNICATIONS, INC. CONFIDENTIAL
AC101L
OVERVIEW
PHYAD3/RX D1
PHYAD2/RX D2
PHYAD1/RX D3
PHYAD4/RX D0
XI/CLK_REF
RESET_N
GNDOSC 38
VCC33IN
48
47
46
45
43
42
41
39
37
44
40
GNDTX
MDIO
MDC
XO
VCCFX GNDFX RXDV/CRS_DV RXC/RMII_SEL ISO/RXER GND VCC TXER TXC TXEN TXD0 TXD1
1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 17 18 19 20 21 23 24 13 22
36 35 34 33 32
VCC25OUT TXP TXN GNDTXC VCCPLL RBIAS GNDPLL GNDRX SD/FXEN_A RXP RXN VCCRX
AC101L
31 30 29 28 27 26 25
COL/SYMB
CRS/RPTR
LED1/SPD100
LED2/DUPLEX
LED3/ANEN
TXD2
TXD3
GND2
VCC
INT#/PHYAD0
The AC101L provides all of the required features of an MII/RMII compliant 10/100TX/FX Ethernet transceiver. The AC101L has the lowest power consumption of any other singleport solution. With a power dissipation of less than 200 mW, the AC101L is the industry's lowest-power Fast Ethernet PHY. It features an integrated voltage regulator, and can be supplied by either a 2.5V or a 3.3V power source. In addition, the AC101L has several intelligent power-down states that conserve power, yet allow products based on it to automatically turn on when needed. This feature is extremely useful in portable and power sensitive applications such as laptop LAN card adapters. Because most laptop users do not remove their LAN PC cards when working remotely, this feature results in a noticeably extended battery life for laptop computers.
Network Tolerance The AC101L includes features that simplify the installation and maintenance of local area networks. One such feature is the HP Auto-MDIX capability, which automatically detects and corrects crossed cables. With HP Auto-MDIX, the installer does not need to know what is on the other end of the network cable; the AC101L automatically switches its transmit and receive circuitry to accommodate the link partner's polarity. When all system costs are considered, such as power, heat, components and real estate, the AC101L provides the lowest overall system cost and most reliable design.
(c) 2002 by ALTIMA COMMUNICATIONS, INC. A fully owned subsidiary of Broadcom Corporation. All rights reserved. AC101L-PB01-R-11.01.02
ALTIMA COMMUNICATIONS, INC. 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 ALTIMA COMMUNICATIONS, INC. CONFIDENTIAL
LED0/TEST_N
PD_N

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