Intersil

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This page covers the following companies: Digital OceanCHOICE Microsystems
HarrisIntersilNo Wires NeededGlobespanVirataConexant.

Timeline

For later chipsets, see Conexant.

Wireless chipsets

b

Chipset MAC BB RFIC Interface PHY
modes
Notes First seen
(FCC)
Adapters ESystems pdf
PRISM I AMD
Am79C930
HFA3824
(HSP3824)
HFA3624 /
HFA3724
PCMCIA (16-bit) legacy (DSSS) 1996, [10] 802.11-
1997 (2Mbps) [11]
5 devices 3 devices DS
All
PRISM I AMD
and others
HFA3824
(HSP3825)
HFA3624 ISA /
PC104
legacy (DSSS) + ISA/PC104 IF 2 devices
PRISM II HFA3841 HFA3861 HFA3683 PCMCIA (16-bit) b Superhet radio, + CF IF,
HFA3841 (HERMES I)
1999-11-09 65 devices 33 devices Doc
PRISM II HFA3841 HFA3861 HFA3683 USB 1.1
(PCI)
b Superhet radio,
+ USB 1.1/PCI IF
1999-11-09 14 devices Doc
PRISM II HFA3845 HFA3861 HFA3683 PCMCIA (16-bit) b Superhet radio 2000-07-25 2 devices 0 devices PCB
PRISM 2.5 HFA3842 HFA3863 HFA3683 PCMCIA (16-bit) b Superhet radio 2000-05-08 3 devices 0 devices Doc
PRISM 2.5 ISL3873
(A/B)
" ISL3685 PCMCIA (16-bit) b Superhet radio,
+ CompactFlash IF
2001-06-04 72 devices 43 devices Doc
PRISM 2.5 ISL3873
(B)
" ISL3685 USB 1.1 b Superhet radio,
+ USB 1.1 IF
2001-06-04 16 devices Doc
PRISM 2.5 ISL3874 " ISL3685 PCI b Superhet radio,
+ PCI IF
2001-06-05 42 devices 16 devices Doc
PRISM 3 ISL3871 " ISL3684 PCMCIA (16-bit) b Zero-IF (DCR) radio,
+ CompactFlash IF
2002-01-23 54 devices 20 devices Doc
PRISM 3 ISL3871 " ISL3684 USB 1.1
(PCI)
b Zero-IF (DCR) radio,
+ USB 1.1/PCI/MS IF
2002-01-23 38 devices Doc
PRISM 3 ISL3872 " ISL3684 PCI b Zero-IF (DCR) radio,
ISL3871 w/ PCI IF
2002-12-21 4 devices 1 devices Doc

(a)bg

Chipset MAC / BB RFIC Interface PHY
modes
Notes First seen
(FCC)
Adapters ESystems pdf
PRISM
Indigo
ISL3877 ISL3687 PCI a . 2002-10-22 4 devices 1 devices
PRISM
Frisbee
ISL3880 ISL3680 / ISL3686 PCI bg addition of ISL3980 PA
and ISL3090 10GHz VCO
2003-01-10 32 devices 35 devices DS
PRISM
Javelin
ISL3886 ISL3686 PCI bg 2003-09-10 16 devices 5 devices
PRISM
Xbow
ISL3886 ISL3692 PCI abg 2003-12-09 6 devices 3 devices
PRISM
Duette
ISL3890 ISL3690 / ISL3692 PCI abg . 2003-08-21 7 devices 1 devices
PRISM
GT
ISL3890 ISL3690 PCI bg . 2002-12-20 9 devices 1 devices
PRISM
Frisbee
ISL3880
netchip net2280
(PCI/USB bridge)
ISL3686 USB 2.0 bg ISL3686A directly interfaces
with ISL3865A (BBP) and
ISL3880 (MAC) with BBP
2003-09-10 21 devices DS
PRISM
Javelin
ISL3886
netchip net2280
(PCI/USB bridge)
ISL3686 USB 2.0 bg 2003-10-23 17 devices
PRISM
Cohiba ?
ISL3887 ISL3686 USB 2.0 bg maybe Globespan Virata or
Conexant branded (GW3887)
2004-03-30 40 devices 0 devices
PRISM
Cohiba ?
ISL3887 ISL3692 USB 2.0 abg 2004-09-10 2 devices 0 devices

SoC

WiSoC

Chip RFIC Arch. Clock
speed
PHY
modes
Reference
designs
First seen
(FCC)
Notes ESystems External
links
ISL3856 PRISM 2 RF ARM940 b ISL36356A 2002-10-09 Rebranded NWN Poldhu
.
3 devices DS
ISL3893 ISL3686 ARM946E bg ISL39300A 2003-07-16 ISL3893 on AppelWiki 23 devices Wiki (SF)
ISL3893 ISL3690 ARM946E abg ISL39300A 2003-09-08 ISL3893 on AppelWiki 1 devices Wiki (SF)

Harris chipsets

See also: Harris and Conexant

PRISM I

  • HFA3824 - BBP (DSSS)
HFA3724 - QAM
HFA3624 - RFIC
HFA3524 - DS
HFA3424 - LNA
HFA3925 - PA

PRISM II

  • HFA3841 - MAC • DS
HFA3861 - BBP • DS
HFA3861A - BBP • DS
HFA3861B - BBP • DS
HFA3783 - QAM • DS
HFA3683(A) - RFIC • DS
HFA3983 - PA • DS

PRISM 2.5

  • HFA3842 - MAC • DS
  • HFA3842A - MAC • DS
  • HFA3842B - MAC • DS
HFA3863 - BPP • DS
  • ISL3873 - MAC/BBP (PCMCIA/USB) • DS
  • ISL3873A - MAC/BBP (PCMCIA/USB) • DS
  • ISL3874 - MAC/BBP (PCI) • DS
  • ISL3874A - MAC/BBP (PCI) • DS
ISL3783 - QUAD IF (QAM) • DS
ISL3685 - RF/IF (CONV) • DS
ISL3984 - PA (RMPA-2455) • DS
ISL3183 - VCO (GEN 748MHz)

PRISM 3

  • ISL3871 - MAC/BBP (PCMCIA) • DS
  • ISL3871A - MAC/BBP (PCMCIA) • DS
  • ISL3872 - MAC/BBP (PCI) • DS
ISL3684 - QAM/DS/RFIC (CONV) • DS
ISL3684A - QAM/DS/RFIC (CONV) • DS
ISL3984 - PA • DS
ISL3985 - PA • DS
ISL3084 - VCO

See also

NWN Swallow ? - MAC (Swallow 550/1100 ??)
HFA3860 (IV) - BBP (BaseBand Processor)
HFA3724 (IN) - QAM (Modulator/Demodulator)
HFA3624 (IA) - RFIC (Prescalar + IF/RF)
HFA3524 (IA) - DS (Digital Synthesizer)
HFA3424 (IB) - LNA (Low Noise Amp)
HFA3925 (IA96) - PA (Power Amp)

Relevant links

Digital Ocean

(via archive.org, Nov. 1996)
All pages captured by archive.org on the digocean.com domain
Digital Ocean's High-Speed Craft for 802.11 Voyages - SETH
Chip MAC in 128-pin TQFP chip pkg. (same as HFA3841 / HERMES)
NOTE: At the time of this article the MAC controller was called SETH,
it has since been renamed "PROTEUS"
(block diagram)

Choice Microsystems

Press release regarding acquisition by Harris

No Wires Needed (NWN)

NWN Poldhu - Intersil ISL3856 (rebranded)
NWN Swallow - Swallow 550/1100 (Parrot 1100)

Conexant

WLAN chipsets history:

Patents

(Published Dec. 6, 1994, Digital Ocean Inc. (Michael A. Fischer))
The microcontroller, in its presently preferred form, is a Motorola 68HC16 microprocessor.
(Published Sep. 21, 1999, Choice Technology Inc. (Michael A. Fischer) and others)

External Links

References