HFA3842B Datasheet, PDF (2/26 Pages) Intersil Corporation – PCMCIA/USB Wireless LAN Medium Access Controller

Pinout
HFA3842B
128 LEAD LQFP
HINPACK- 103
HWAIT- 104
SB ATTACHED
105
HA0
106
HA1 ¹⁰⁷
HA2 ¹⁰⁸
HA3 ¹⁰⁹
HA4 ¹¹⁰
HA5 111
HA6 112
HA7 113
HIREQ- 114
V_SS _IO3
115
HWE- 116
HA8 117
HA9 118
HIOWR- 119
HIORD- 120
HOE- 121
HCE2- 122
HD15 123
V_CC _IO3
124
HD14 125
HD13
126
HD12
127
HD11
128
INDEX
64
PK4
63
PK3
62
MLBE-
61
MD0
60
MD1
59
MD2
58
MD3
57
MD4
56
MD5
55
MD6
54
MD7
53
V_CC_CORE3
52
V_SS_IO3
51
MD8
50
MD9
49
MD10
48
MD11
47
MD12
46
MD13
45
MD14
44
MD15
43
PL4
42
V_SS_IO3
41
LFXTALO
40
CLKIN
39
LFXTALI
Simplified Block Diagram
PRISM RADIO
BASEBAND
PROCESSOR
TXD/RXD
CTRL/STATUS
SERIAL CONTROL
HFA3842B
PHY
INTERFACE
(MDI)
PRISM RADIO
RF SECTION
RADIO AND SYNTH
SERIAL CONTROL
SERIAL
CONTROL
(MMI)
ON-CHIP
ROM
† THE 3842 MUST BE SUPPLIED WITH A
SEPARATE 48MHz CLOCK WHEN USB IS USED.
44MHz CLOCK
SOURCE †
MICRO-
PROGRAMMED
MAC ENGINE
WEP
ENGINE
MEMORY
CONTROLLER
PC CARD
HOST
INTERFACE
USB
HOST
INTERFACE
ON-CHIP
RAM
EXTERNAL
SRAM AND
FLASH
MEMORY
HOST
COMPUTER
DATA
ADDRESS
CONTROL
USB
2