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| | | | | AMD Development Boards and RDKs |
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AMD Alchemy™ Solutions Am1772™ Wireless LAN Chipset
AMD's Next Generation of Wireless Lan Solutions
A cost-effective wireless LAN solution optimized to deliver
high performance for low power, small form-factor applications.
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the PDF
Overview
The AMD Alchemy™ Solutions Am1772™ wireless LAN chipset is the
first offering from AMD’s next generation of wireless LAN solutions.
An optimized IEEE 802.11b Wi-Fi based wireless LAN solution that
combines low-power consumption with a small form factor, the Am1772 wireless
chipset is the first building block in a long-term wireless strategy from
AMD. By listening to the needs of wireless LAN solution providers, we've
created a compact design that enables highly cost-effective, small form
factor solutions. The two-chip, direct-down conversion design also allows
the Am1772 chipset to be used in conjunction with other wired and wireless
technologies to create innovative system solutions.
Highlights
The Am1772 chipset has been designed to help:
Preserve board space
The Am1772 requires a minimal number of additional components. The AMD Alchemy™
Soluitons Am1770™ wireless product is a world-class, Zero-IF, 2.4GHz
DSSS transceiver that features a highly integrated design. By eliminating
the need for external VCOs and an Rx/Tx filter - and requiring a single
external 44MHz oscillator - the Am1770 transceiver converves precious board
space and reduces the Bill of Materials.
Lower power consumption
The Am1772 chipset is optimized for low-power consumption solutions, combining
a CMOS RF transceiver and medium access controller baseband processor.
Improve performance
The AMD Alchemy™ Solutions Am1771™ wireless product incorporates
a pioneering low-noise digital interface to the Am1770 transceiver, which
allows the development of high performance and low component count WLAN
solutions. It also features on-chip MAC hardware acceleration to help minimize
CPU utilization compared to today's technology.
The descriptor-based DMA architecture also eliminates the need for external
SRAM and Flash memory, and is designed to improve system efficiency while
providing an easy path for host CPU software enhancements to support future
WLAN security and QoS requirements.
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At a Glance
Am1770™ Zero-IF Transceiver
- No external VCO, tank circuitry, loop and SAW filter
- Digital interface to Am1771 BB/MAC
- Automatic calibration of filter cut-off frequencies
- Self-contained AGC requires no BB intervention
Automatic Tx Power Level Control (APLC), including level adjustment
- High receiver sensitivity designed to increase performance and range
Am1771™ Integrated Baseband/MAC
- Eliminates external SRAM and Flash memory
- PCI and CardBus host bus interface
- On-chip MAC hardware acceleration resulting in low CPU utilization
- Advanced low-power CMOS process lowers operating current
- Full Support of all 802.11b long and short header modes
- State-of-the-art channel equalizer provides robust and stable performance
in a variety of environments
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Package
Am1170
Zero-IF Transceiver (7x7)mm
48-pin LQFP
Am1771
BB/MAC Controller (13x13)mm
176-ball LFBGA
Specifications
| IEEE standard support |
802.11b compliant |
| Variable data rates |
11, 5.5, 2, and 1 Mbps (short and long
header modes) |
| Frequency band |
ISM-band (2400MHz_2484MHz) |
| Receive sensitivity (8% PER) |
-87dBm (@11Mbps)
-90dBm (@5.5Mbps)
-92dBm(@2.0Mbps)
-95dBm(@1.0Mbps) |
| Security WEP |
WEP 40- and128-bit, TKIP +WPA* |
| Operating temperature |
-40°C to +85°C for Am1771
-20°C to +80°C for Am1770 |
| Power Supply |
Am1770:2.5V
Am1771: 1.8V, 2.5V, 3.3V |
*Software
enhancements planned for TKIP +WPA in the future |
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| Diagram |
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| Power consumption in (mW)
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Am1770 |
Am1771 |
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Transceiver |
MAC/BB |
| Tx mode |
< or = to 175mW |
< or = to 40mW |
| Rx mode |
< or = to 210mW |
< or = to 85mW |
| Listen mode |
N/A |
< or = to 45mW |
| Sleep mode |
< or = to 7.5mW |
< or = to 30mW |
System documentation
- User guide
- Data sheets
- Application notes
- Complementary drivers and utilities
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Operating system support
- Windows® 98
- Windows ME
- Windows 2000
- Windows XP
- Windows NT®
- Linux
Reference design kits (RDKs)
- Mini PCI type IIIb
PC card (CardBus)
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| Download
the PDF |
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