HFA3860B datasheet(24/40 Pages) INTERSIL

Part #	HFA3860B

Description	Direct Sequence Spread Spectrum Baseband Processor

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Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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24 / 40 page

4-24

RSSI (14)

3-BIT

A/D

IIN (12)

QIN (13)

6-BIT

A/D

REF

1.75V

0.25V

VREFP (16)

VREFN (17)

VR3+

VR3-

RSSI

REF

3

MF CORRELATOR

CLEAR CHANNEL

ASSESSMENT/

(32) CCA

BIT

SYNC

PHASE

ROTATE

PSK

DEMOD

LEAD

/LAG

FILTER

NCO

PHASE

ERROR

RX_DATA

DESCRAMBLER

(35) RXD

(3) TXD

(36) RXCLK

Z -1

XOR

DIFF

DECODER

d(t)

d(t-1)

ANALOG

DE-SPREADER/ACQUISITION

DPSK DEMOD

AND AFC

TIMING

GENERATOR

8

SIGNAL

QUALITY

AND

RSSI

(10, 18, 20)

VDD (ANALOG)

(7, 21, 29, 42)

VDD (DIGITAL)

(11, 15, 19)

GND (ANALOG)

(6, 22, 31, 41)

GND (DIGITAL)

(4) TXCLK

(5) TX_RDY

(2) TX_PE

(33) RX_PE

(34) MD_RDY

ANTSEL (27)

(24) SCLK

(25) SD

(23) SDI

(8) R/W

(9) CS

(30)

MCLK

(28)

RESET

(38)

(37)

(39) (40) (43) (44) (45) (46)

TEST PORT

TEST_CK

(1)

A/D REF

LEVEL ADJ.

MAG. /

PHASE

AND

TIMING

DISTRIB.

SIGNAL QUALITY

MCLK

8

2V

(MAX)

(MIN)

3-BIT

A/D

11-BIT BARKER

AND

SIN/COS

ROM

COMPLX

MULTIPLY

CARRIER

PHASE

DETECT

NCO

WALSH

CORREL

LEAD

/LAG

FILTER

CHIP

PHASE

DETECT

TIMING

LOOP

SYMBOL

DECISION

SIGN

CORRECT,

CLOCK

ENABLE

FILTER

LOGIC

PISO

HIGH RATE SECTION

PHASE AND FREQ JAM

ANTSEL (26)

FIGURE 15. DSSS BASEBAND PROCESSOR, RECEIVE SECTION

DIFF.

DECODE

HFA3860B

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HFA3860B Datasheet(PDF) 24 Page - Intersil Corporation

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