PPC34C60 datasheet(5/58 Pages) SMSC

5 / 58 page

SMSC DS – PPC34C60

Page 5

Rev. 06/01/2001

ADVANCED INFORMATION

DESCRIPTION OF PIN FUNCTIONS

PIN NO.

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

PARALLEL PORT HOST CONTROL AND COMMON DATA BUS INTERFACE

nHost:Strobe

nHSTB

I,PU

An active low pulse on this input is used

to strobe printer data into the printer.

Refer to Section 4 of the IEEE STD 1284

(Reference 1) for use of this pin in ECP

and EPP modes.

nHost:Auto

Line

Feed

nHALF

I,PU

This input goes low to cause the printer to

automatically feed one line after each line

is printed. Connects to AUTOFD output

from Host. Refer to Section 4 of the IEEE

STD 1284 (Reference 1) for use of this

pin in ECP and EPP modes.

nHost:SelectIn

nHSEL

This active low input is driven by the host

to select the printer.

Connects to

SELECT IN output from Host. Refer to

Section 4 of the IEEE STD 1284

(Reference 1) for use of this pin in ECP

and EPP modes.

(See Note 1 on Page

11.)

nHost:Initiate

nHINIT

This active low input initiates the printer

when low. Connects to INIT output from

Host.

Refer to Section 4 of the IEEE

STD 1284 (Reference 1) for use of this

pin in ECP and EPP modes. (See Note 1

on Page 11.)

nHost:

Acknowledge

nHACK

O16

This active low output from the printer is

used to indicate that the printer has

received the data and is ready to accept

new data. Connects to the ACK input to

the Host. Refer to Section 4 of the IEEE

STD 1284 (Reference 1) for use of this

pin in ECP and EPP modes.

Host:Busy

HBSY

O16

This status output, generated by the

printer, goes high to indicate that it is not

ready to receive new data from the host.

Connects to the BUSY input to the Host.

Refer to Section 4 of the IEEE STD 1284

(Reference 1) for use of this pin in ECP

and EPP modes.

Host:Paper End

HPE

O16

This status output, generated by the

printer, goes high to indicate that the

printer is out of paper. Connects to the

PERROR input to the Host. Refer to

Section 4 of the IEEE STD 1284

(Reference 1) for use of this pin in ECP

and EPP modes.

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