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HFA3842IN

Wireless LAN Medium Access Controller

Intersil 

HFA3842

HFA3842 Pin Descriptions

HOST INTERFACE PINS

PIN NAME

PIN NUMBER

PIN I/O TYPE

HA0-9

106-113, 117, 118 5V Tol, CMOS, Input, 50K Pull Down

HCE1-

1

5V Tol, CMOS, Input, 50K Pull Up

HCE2-

122

5V Tol, CMOS, Input, 50K Pull Up

HD0-15

101-99, 6-2,

96-94, 128-125,

123

5V Tol, BiDir, 2mA, 50K Pull Down

HINPACK-

103

CMOS Output, 2mA

HIORD-

120

5V Tol, CMOS, Input, 50K Pull Up

HIOWR-

119

5V Tol, CMOS, Input, 50K Pull Up

HRDY/HIREQ-

114

CMOS Output, 4mA

HOE-

HREG-

HRESET

HSTSCHG-

HWAIT-

HWE-

121

5V Tol, CMOS, Input, 50K Pull Up

102

5V Tol, CMOS, Input, 50K Pull Up

16

5V Tol, CMOS, ST Input, 50K Pull Up

36

CMOS Output, 4mA

104

CMOS Output, 4mA

116

5V Tol, CMOS Input, 50K Pull Up

DESCRIPTION

PC Card Address Input, Bits 0 to 9

PC Card Select, Low Byte

PC Card Select, High Byte

PC Card Data Bus, Bit 0 to 15

PC Card I/O Decode Confirmation

PC Card I/O Space Read

PC Card I/O Space Write

PC Card interrupt Request (I/O Mode) Card Ready

(Memory Mode)

PC Card Memory Attribute Space Output Enable

PC Card Attribute Space Select

Hardware Reset

PC Card Status Change

PC Card Not Ready (Force Host Wait State)

PC Card Memory Attribute Space Write Enable

PIN NAME

MUBE- / MA0 /

MWEH-

MA1-18

PL4

PL5

PL6

MLBE-

MOE-

MWE- / MWEL-

RAMCS-

NVCS-

MD0-7

MD8-15

1.

2.

PIN NUMBER

72

73-81, 84-92

43

12

11

62

70

71

69

68

61-54

51-44

TABLE 1. MEMORY INTERFACE PINS

PIN I/O TYPE

DESCRIPTION

CMOS TS Output, 2mA

MBUS Upper Byte Enable for x16 Memory; MBUS

Address Bit 0 (byte) for x8 Memory; High Byte Write

Enable for 2 x8 Memories

CMOS TS Output, 2mA

MBUS Address Bits 1 to 18

CMOS BiDir, 2mA

MBUS Address Bit 19

CMOS BiDir, 2mA, 50K Pull Up

MBUS Address Bit 20

CMOS BiDir, 2mA

MBUS Address Bit 21

CMOS TS Output, 2mA, 50K Pull Up

MBUS Lower Byte Enable, or I/O as PM2

CMOS TS Output, 2mA

Memory Output Enable

CMOS TS Output, 2mA

Low (or only) Byte Memory Write Enable

CMOS TS Output, 2mA

RAM Select

CMOS TS Output, 2mA

NV Memory Select

5V Tol, CMOS, BiDir, 2mA, 100K Pull Up

MBUS Low Data Byte, Bits 0 to 7

5V Tol, CMOS, BiDir, 2mA 50K Pull Down

MBUS High Data Byte, Bits 8 to 15

PIN NAME

PIN NUMBER

GENERAL PURPOSE PORT PINS

TXD

17

TXC

18

RXD

19

RXC

20

TABLE 2. GENERAL PURPOSE AND EEPROM PORT PINS

PIN I/O TYPE

DESCRIPTION OF FUNCTION

(IF OTHER THAN IO PORT)

CMOS BiDir, 2mA, 50K Pull Down

CMOS BiDir, 2mA

CMOS Input

CMOS Input

Transmit Data Out

Transmit Clock In/Out

Receive Data In

Receive Clock In

3

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