Intersil
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Jump to navigationJump to searchThis page covers the following companies: Digital Ocean → CHOICE Microsystems
→ Harris → Intersil → No Wires Needed → GlobespanVirata → Conexant.
Timeline
- 1995: Digital Ocean starts development of WLAN MAC for AT&T WaveLAN division [1]
- 1996: Digital Ocean starts development of WLAN MAC for Aironet (later Cisco) [2]
- 1996: Digital Ocean becomes CHOICE Microsystems [3]
- 1996: Harris first Wi-Fi chip (HSP3824 802.11 Baseband PHY) [4]
- 1999: Harris acquires CHOICE Microsystems (CW10 802.11b MAC) [5]
- 1999: Harris rebrands its semi. division to Intersil [6]
- 2000: Intersil acquires No Wires Needed B.V. [7]
- 2003: Intersil sells its WLAN division to GlobespanVirata [8]
- 2003: Conexant and GlobespanVirata merge [9]
For later chipsets, see Conexant.
Wireless chipsets
- See also: Intersil reference design
b
| Chipset | MAC | BB | RFIC | Interface | PHY modes |
Notes | First seen (FCC) |
Adapters | ESystems | |
|---|---|---|---|---|---|---|---|---|---|---|
| PRISM I | AMD Am79C930 |
HFA3824 (HSP3824) |
HFA3624 / HFA3724 |
PCMCIA (16-bit) | legacy (DSSS) | 1996, [10] 802.11- 1997 (2Mbps) [11] |
0 devices | 2 devices | DS All | |
| PRISM I | AMD and others |
HFA3824 (HSP3825) |
HFA3624 | ISA / PC104 |
legacy (DSSS) | + ISA/PC104 IF | 5 devices | |||
| PRISM II | HFA3841 | HFA3861 | HFA3683 | PCMCIA (16-bit) | b | Superhet radio, + CF IF, HFA3841 (HERMES I) |
1999-11-09 | 0 devices | 33 devices | Doc |
| PRISM II | HFA3841 | HFA3861 | HFA3683 | USB 1.1 (PCI) |
b | Superhet radio, + USB 1.1/PCI IF |
1999-11-09 | 78 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 | 0 devices | 43 devices | Doc |
| PRISM 2.5 | ISL3873 (B) |
" | ISL3685 | USB 1.1 | b | Superhet radio, + USB 1.1 IF |
2001-06-04 | 84 devices | Doc | |
| PRISM 2.5 | ISL3874 | " | ISL3685 | PCI | b | Superhet radio, + PCI IF |
2001-06-05 | 42 devices | 14 devices | Doc |
| PRISM 3 | ISL3871 | " | ISL3684 | PCMCIA (16-bit) | b | Zero-IF (DCR) radio, + CompactFlash IF |
2002-01-23 | 0 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 | 91 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
2003-04-03 | 2 devices | 35 devices | DS |
| PRISM Javelin |
ISL3886 | ISL3686 | PCI | bg | 2003-09-30 | 3 devices | 5 devices | ||
| PRISM Xbow |
ISL3886 | ISL3692 | PCI | abg | 2003-09-30 | 2 devices | 3 devices | ||
| PRISM Duette |
ISL3890 | ISL3690 / ISL3692 | PCI | abg | . | 2002-12-20 | 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 | 2004-03-30 | 2 devices | 0 devices |
- See also: Intersil/p54/usb/windows and Intersil/prism2/usb/windows
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 | 24 devices | Wiki (SF) | |
| ISL3893 | ISL3690 | ARM946E | abg | ISL39300A | 2003-07-16 | ISL3893 on AppelWiki | 1 devices | Wiki (SF) |
Harris chipsets
- PRISM Models
- PRISM Card Tested
- Harris/Intersil PRISM II/2.5/3
- PRISM I and PRISM II chipsets
- Harris HSP3824 Baseband Processor
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
- 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
- ISL3684 - QAM/DS/RFIC (CONV) • DS
- ISL3684A - QAM/DS/RFIC (CONV) • DS
- ISL3984 - PA • DS
- ISL3985 - PA • DS
- ISL3084 - VCO
See also
- Compaq WL400 (NWN Parrot 1100) - PRISM I
- 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
- Detailed timeline in this court document: [3]
- http://www.digocean.com - former WWW home of 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)
Choice Microsystems
- http://www.choicemicro.com - presumably the former and short lived
WWW home of Choice Microsystems (via archive.org, Sep. 1999)
No Wires Needed (NWN)
- Intersil acquires No Wires Needed B.V. on May 2000
- NWN Poldhu - Intersil ISL3856 (rebranded)
- NWN Swallow - Swallow 550/1100 (Parrot 1100)
Conexant
WLAN chipsets history:
- PRISM chipset developed by Harris Semiconductor
- PRISM2 chipset by Intersil unveiled on August 24, 1999
- Harris Semiconductor changed its name to Intersil Corporation on July 16, 1999
- Intersil's Wireless Networking was bought by GlobespanVirata on August 28, 2003
- Conexant (formerly Rockwell) merged with GlobespanVirata on November 3, 2003
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
- ↑ On February 21, 1995, AT&T and Digital Ocean entered into a JDA [1]
- ↑ LUCENT TECHNOLOGIES, AIRONET CORPORATION AND DIGITAL OCEAN ANNOUNCE IEEE-COMPLIANT WIRELESS MULTI-VENDOR INTEROPERABILITY PROTOCOL
- ↑ As of February 21, 1996, Choice Microsystems succeedded to the business of Digital Ocean [2]
- ↑ Harris Corp. Introduces the HSP3824 Baseband Processor
- ↑ 1999-02-22 - Harris Corporation acquires CHOICE Microsystems
- ↑ 1999-07-16 - Harris Corporation rebrands its semi. division to Intersil
- ↑ 2000-05 - Intersil acquires No Wires Needed B.V.
- ↑ 2003-07-15 - Intersil sells its WLAN division to GlobespanVirata
- ↑ 2003-11-11 - Conexant and GlobespanVirata merge
- ↑ Harris Corp. Introduces the HSP3824 Baseband Processor
- ↑ PRISM I and PRISM II chipsets
