ISL3874 Datasheet, PDF (2/33 Pages) Intersil Corporation – Wireless LAN Integrated Medium Access Controller with Baseband Processor with Mini-PCI

Simplified Block Diagram
HOST
COMPUTER
ISL3874
DATA
ADDRESS
CONTROL
PCI/CARD BUS 32
HOST
INTERFACE
MICRO-
PROGRAMMED
MAC ENGINE
WEP
ENGINE
ON-CHIP
ROM
ON-CHIP
RAM
MEMORY
CONTROLLER
ISL3874
ANT_SEL
PRISM RADIO
RF SECTION
PHY
INTERFACE
(MDI)
SERIAL
CONTROL
(MMI)
AGC
CTL
DEMOD
DATA I/O
1
THRESH.
1 _DETECT
7
IF
DAC
6
I ADC
6
Q ADC
RX_RF_AGC
RX_IF_DET
RX_IF_AGC
RX_I±
RX_Q±
I/O
V_REF
MOD
TX
ALC
6 I DAC
6
Q DAC
7
TX
DAC
6
TX
ADC
TX_I±
TX_Q±
TX_IF_AGC
TX_AGC_IN
MEDIUM ACCESS
CONTROLLER
BASEBAND PROCESSOR
RADIO AND SYNTH
SERIAL CONTROL
ADDRESS
DATA
SELECT
EXTERNAL
SRAM AND
FLASH
MEMORY
44MHz CLOCK
SOURCE †
.
2