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Baseband Processor. HSP3824 Datasheet

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Baseband Processor. HSP3824 Datasheet
















HSP3824 Processor. Datasheet pdf. Equivalent













Part

HSP3824

Description

Direct Sequence Spread Spectrum Baseband Processor



Feature


( DataSheet : www.DataSheet4U.com ) S E M I C O N D U C T O R HSP3824 Direct Sequence Spread Spectrum Baseband Proce ssor TM PRELIMINARY March 1996 Featur es • Complete DSSS Baseband Processor • High Data Rate. . . . . . . . . . . . . . . . . . . . .up to 4 MBPS • P rocessing Gain . . . . . . . . . . . . . . . . . . . . . up to 12dB • Progra mmable PN Code . . . . . ..
Manufacture

Harris Corporation

Datasheet
Download HSP3824 Datasheet


Harris Corporation HSP3824

HSP3824; . . . . . . up to 16 Bits • Ultra Sma ll Package . . . . . . . . . . . . . . . . . 7 x 7 x 1mm • Single Supply Ope ration (33MHz Max) . . 2.7V to 5.5V • Single Supply Operation (44MHz Max) . . 3.3V to 5.0V • Modulation Method . . . . . . . . . . . . . DBPSK or DQPSK • Supports Full or Half Duplex Operat ions • On-Chip A/D Converters for I/Q Data (3-Bit, 44 MSPS) and RSS.


Harris Corporation HSP3824

I (6-Bit, 2 MSPS) Description The Harr is HSP3824 Direct Sequence (DSSS) baseb and processor is part of the PRISM™ 2 .4GHz radio chipset, and contains all t he functions necessary for a full or ha lf duplex packet baseband transceiver. The HSP3824 has on-board ADC’s for an alog I and Q inputs, for which the HFA3 724 IF QMODEM is recommended. Different ial phase shift keying.


Harris Corporation HSP3824

modulation schemes DBPSK and DQPSK, wit h optional data scrambling capability, are combined with a programmable PN seq uence of up to 16 bits. Built-in flexi bility allows the HSP3824 to be config ured through a general purpose control bus, for a wide range of applications. A Receive Signal Strength Indicator (RS SI) monitoring function with on-board 6 -bit 2 MSPS ADC provid.





Part

HSP3824

Description

Direct Sequence Spread Spectrum Baseband Processor



Feature


( DataSheet : www.DataSheet4U.com ) S E M I C O N D U C T O R HSP3824 Direct Sequence Spread Spectrum Baseband Proce ssor TM PRELIMINARY March 1996 Featur es • Complete DSSS Baseband Processor • High Data Rate. . . . . . . . . . . . . . . . . . . . .up to 4 MBPS • P rocessing Gain . . . . . . . . . . . . . . . . . . . . . up to 12dB • Progra mmable PN Code . . . . . ..
Manufacture

Harris Corporation

Datasheet
Download HSP3824 Datasheet




 HSP3824
( DataSheet : www.DataSheet4U.com )
SEMICONDUCTOR
HSP3824
PRELIMINARY
March 1996
Direct Sequence Spread Spectrum
Baseband Processor
Features
• Complete DSSS Baseband Processor
• High Data Rate. . . . . . . . . . . . . . . . . . . . .up to 4 MBPS
• Processing Gain . . . . . . . . . . . . . . . . . . . . . up to 12dB
• Programmable PN Code . . . . . . . . . . . . up to 16 Bits
• Ultra Small Package . . . . . . . . . . . . . . . . . 7 x 7 x 1mm
• Single Supply Operation (33MHz Max) . . 2.7V to 5.5V
• Single Supply Operation (44MHz Max) . . 3.3V to 5.0V
• Modulation Method . . . . . . . . . . . . . DBPSK or DQPSK
• Supports Full or Half Duplex Operations
• On-Chip A/D Converters for I/Q Data (3-Bit, 44 MSPS)
and RSSI (6-Bit, 2 MSPS)
Applications
• Systems Targeting IEEE802.11 Standard
• DSSS PCMCIA Wireless Transceiver
• Spread Spectrum WLAN RF Modems
• TDMA Packet Protocol Radios
• Part 15 Compliant Radio Links
• Portable Bar Code Scanners/POS Terminal
• Portable PDA/Notebook Computer
• Wireless Digital Audio
• Wireless Digital Video
• PCN/Wireless PBX
TM Description
The Harris HSP3824 Direct
Sequence (DSSS) baseband pro-
cessor is part of the PRISM™
2.4GHz radio chipset, and contains
all the functions necessary for a full or half duplex packet base-
band transceiver.
The HSP3824 has on-board ADC’s for analog I and Q inputs, for
which the HFA3724 IF QMODEM is recommended. Differential
phase shift keying modulation schemes DBPSK and DQPSK,
with optional data scrambling capability, are combined with a pro-
grammable PN sequence of up to 16 bits. Built-in flexibility allows
the HSP3824 to be configured through a general purpose control
bus, for a wide range of applications. A Receive Signal Strength
Indicator (RSSI) monitoring function with on-board 6-bit 2 MSPS
ADC provides Clear Channel Assessment (CCA) to avoid data
collisions and optimize network throughput. The HSP3824 is
housed in a thin plastic quad flat package (TQFP) suitable for
PCMCIA board applications.
Ordering Information
PART NO.
HSP3824VI
TEMP. RANGE
-40oC to +85oC
PKG. TYPE
48 Lead TQFP
PKG. NO.
Q48.7x7
Simplified Block Diagram
Pinout
HSP3824 (TQFP)
IIN
3-BIT
A/D
QIN
3-BIT
A/D
RSSI
IOUT
6-BIT
A/D
QOUT
DPSK
DEMOD.
CCA
PRO-
CESSOR
INTER-
FACE
DPSK
MOD.
CTRL
TEST_CK
TX_PE
TXD
TXCLK
TX_RDY
GND
VDD
R/W
CS
VDD
GND
IIN
48 47 46 45 44 43 42 41 40 39 38 37
1 36
2 35
3 34
4 33
5 32
6 31
7 30
8 29
9 28
10 27
11 26
12 25
13 14 15 16 17 18 19 20 21 22 23 24
RXCLK
RXD
MD_RDY
RX_PE
CCA
GND
MCLK
VDD
RESET
ANTSEL
A/D_CAL
SD
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1996
PRISM™ and the PRISM™ logo are Trademarks of Harris Corporation
1
www.DataSheet4U.com
File Number 4064.2




 HSP3824
HSP3824
List of Contents
Typical Application Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
External Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TX Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
RX Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
I/Q ADC Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ADC Calibration Circuit and Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
RSSI ADC Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Test Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
External AGC Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Down Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Transmitter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Header/Packet Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PN Generator Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Scrambler and Data Encoder Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Modulator Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Clear Channel Assessment (CCA) and Energy Detect (ED) Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Receiver Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Acquisition Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Two Antenna Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
One Antenna Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Acquisition Signal Quality Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Procedure to Set Acq. Signal Quality Parameters (Example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PN Correlator Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Data Demodulation and Tracking Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Procedure to Set Signal Quality Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Data Decoder and Descrambler Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Demodulator Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Overall Eb/N0 Versus BER Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Clock Offset Tracking Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Carrier Offset Frequency Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
I/Q Amplitude Imbalance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
A Default Register Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
HSP3824 33MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
HSP3824 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
HSP3824 44MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Thin Plastic Quad Flatpack Packages (TQFP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2




 HSP3824
HSP3824
Typical Application Diagram
HFA3724
(FILE# 4067)
TUNE/SELECT
HSP3824
(FILE# 4064)
HFA3424 (NOTE)
(FILE# 4131)
HFA3624
RF/IF
CONVERTER
(FILE# 4066)
RXI A/D
DPSK
DEMOD
DE-
SPREAD
I
RXQ
A/D
÷2
0o/90o M
U
M RSSI
U
802.11
A/D
CCA
MAC-PHY
INTERFACE
XX
TXI
RFPA
HFA3925
(FILE# 4132)
VCO VCO
DUAL SYNTHESIZER
Q
QUAD IF MODULATOR
SPREAD
TXQ
DPSK
MOD.
DSSS BASEBAND PROCESSOR
HFA3524 (FILE# 4062)
PRISM™ CHIP SET FILE #4063
TYPICAL TRANSCEIVER APPLICATION CIRCUIT USING THE HSP3824
NOTE: Required for systems targeting 802.11 specifications.
For additional information on the PRISM™ chip set, call
(407) 724-7800 to access Harris’ AnswerFAX system. When
prompted, key in the four-digit document number (File #) of
the datasheets you wish to receive.
The four-digit file numbers are shown in Typical Application
Diagram, and correspond to the appropriate circuit.
3




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