isl3873a Intersil Corporation, isl3873a Datasheet - Page 2

• Manufacturer Part Number: isl3873a
• Description: Wireless Lan Integrated Medium Access Controller With Baseband Processor
• Manufacturer: Intersil Corporation

Simplified Block Diagram
DATA
ADDRESS
CONTROL
COMPUTER
HOST
ADDRESS
EXTERNAL
SRAM AND
ON-CHIP
ON-CHIP
MEMORY
SELECT
FLASH
ROM
RAM
DATA
INTERFACE
PC CARD
HOST
PROGRAMMED
MAC ENGINE
MICRO-
CONTROLLER
MEMORY
ENGINE
2
WEP
MEDIUM ACCESS
CONTROLLER
INTERFACE
HOST
USB
USB
INTERFACE
CONTROL
SERIAL
(MDI)
(MMI)
PHY
ISL3873A
ISL3873A
DATA I/O
DEMOD
MOD
AGC
ALC
I/O
CTL
TX
BASEBAND PROCESSOR
44MHz CLOCK
SOURCE †
6
6
7
6
1
1
7
6
6
†
THE ISL3873A MUST BE SUPPLIED WITH A
SEPARATE CLOCK WHEN USB IS USED.
THRESH.
Q ADC
Q DAC
DETECT
I ADC
I DAC
DAC
DAC
ADC
IF
TX
TX
RX_RF_AGC
RX_IF_AGC
TX_IF_AGC
TX_AGC_IN
RX_IF_DET
ANT_SEL
RXQ±
TXQ±
V
RXI±
TXI±
REF
RADIO AND SYNTH
SERIAL CONTROL
PRISM RADIO
RF SECTION