FDC37B72X_07 参数 Datasheet PDF下载

PIN

No./QFP

124

126

127

128

125

122

120

96-103

95

94

110

111

107

108

106

105

109

70

71

72

73

75

76

NAME

TOTAL

SYMBOL

Transmit Serial Data 2/Infrared Tx (Note 3)

1

TXD2/IRTX

Request to Send 2

1

nRTS2

Clear to Send 2

1

nCTS2

Data Terminal Ready

1

nDTR2

Data Set Ready 2

1

nDSR2

Data Carrier Detect 2

1

nDCD2

Ring Indicator 2

1

nRI2

PARALLEL PORT INTERFACE (17)

Parallel Port Data Bus

8

PD[0:7]

Printer Select

1

nSLCTIN

Initiate Output

1

nINIT

Auto Line Feed

1

nALF

Strobe Signal

1

nSTROBE

Busy Signal

1

BUSY

Acknowledge Handshake

1

nACK

Paper End

1

PE

Printer Selected

1

SLCT

Error at Printer

1

nERROR

KEYBOARD/MOUSE INTERFACE (6)

Keyboard Data

1

KDAT

Keyboard Clock

1

KCLK

Mouse Data

1

MDAT

Mouse Clock

1

MCLK

Keyboard Reset

1

KBDRST

(Note 2)

Gate A20

1

A20M

BUFFER TYPE

O24

O4

I

O4

I

I

I

IOP14

OP14

OP14

OP14

OP14

I

I

I

I

I

IOD16

IOD16

IOD16

IOD16

O4

O4

Note 1: The “n” as the first letter of a signal name indicates an “Active Low” signal.

Note 2: KBDRST is active low.

Note 3: This pin defaults to an output and low. When configured as IRTX (or IRTX2), this pin is low when

the IR block is not transmitting.

Note 4: EETI is the Either Edge Triggered Interrupt Input function.

9