PC87351 datasheet(15/86 Pages) NSC

15 / 86 page

1.0 Signal/Pin Connection and Description (Continued)

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PNF

98, 127

Parallel Port

1.4.8

INT

11.1.7

MUX

PWUREQ

124

Wake-Up

1.4.12

OD12

11.1.10

RDATA

FDC

1.4.3

INT

11.1.7

PPM

RI1

111

Wake-Up

Serial Port 1

1.4.12

1.4.10

INTS

11.1.8

RI2

120

Wake-Up

Serial Port 2

1.4.12

1.4.10

INTS

11.1.8

RING

125

Wake-Up

1.4.12

INTS

11.1.8

MUX

RTS1

107

Serial Port 1

1.4.10

O6/12

11.1.9

RTS2

115

Serial Port 2

1.4.10

O6/12

11.1.9

MUX

SERIRQ

Host Interface

1.4.5

INTS

O15/24

11.1.8

11.1.9

MUX

SIN1

106

Serial Port 1

1.4.10

INTS

11.1.8

SIN2

114

Serial Port 2

1.4.10

INTS

11.1.8

MUX

SLCT

Parallel Port

1.4.8

INT

11.1.7

PPM

SLIN/ASTRB

Parallel Port

1.4.8

OD14, O14/14 11.1.10, 11.1.9

MM/PPM

SOUT1

108

Serial Port 1

1.4.10

O6/12

11.1.9

SOUT2

117

Serial Port 2

1.4.10

O6/12

11.1.9

MUX

STEP

FDC

1.4.3

OD24, O4/24

11.1.10, 11.1.9

PPM

STB/WRITE

Parallel Port

1.4.8

OD14, O14/14 11.1.10, 11.1.9

SUSP

126

Wake-Up

1.4.12

INTS

11.1.8

MUX

Host Interface

1.4.5

INT

11.1.7

TRK0

FDC

1.4.3

INT

11.1.7

PPM

VBAT

122

Power and Ground 1.4.11

INULR

N/A

VDD

17, 86

Power and Ground 1.4.9

PWR

N/A

VSB

123

Power and Ground 1.4.12

PWR

N/A

VSS

18, 51, 85,

116

Power and Ground 1.4.12

GND

N/A

WAIT

See BUSY/WAIT

WDATA

FDC

1.4.3

OD24, O4/24

11.1.10, 11.1.9

PPM

Table 1-2. Signal/Pin Directory (Continued)

Signal

Pin/s

Functional Group

DC Characteristics

Multiplexed

Name

Section

Buffer Type

Section

PC87351 Datasheet(PDF) 15 Page - National Semiconductor (TI)

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