PPC34C60 datasheet(6/58 Pages) SMSC

6 / 58 page

SMSC DS – PPC34C60

Page 6

Rev. 06/01/2001

ADVANCED INFORMATION

DESCRIPTION OF PIN FUNCTIONS

PIN NO.

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

Host:Printer

Selected

HSLCT

O16

This status output, generated by the

printer, goes high to indicate that the

printer is selected.

Connects to the

SELECT 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.

nHost:Printer Error

nHERR

O16

This status output, generated by the

printer, goes low to indicate an error

condition at the printer. Connects to the

ERROR 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.

5,8,13,15

-18, 20

Host:Data[0:7]

HD[0:7]

I/O16,

Parallel port bi-directional data bus

connected to host system is used by

SPP, ECP and EPP to transfer data

between the host CPU and peripherals.

Refer to Section 4 of the IEEE STD 1284

(Reference 1) for use of this pin in ECP

and EPP modes.

PARALLEL PORT PASS-THROUGH INTERFACE PINS

nPass-Through:

Strobe

nPSTB

O16

An active low pulse on this output is used

to strobe printer data into the printer.

Connects to the STROBE input on the

next device along the chain. Refer to

Section 4 of the IEEE STD 1284

(Reference 1) for use of this pin in ECP

and EPP modes.

nPass-Through:

Auto Line Feed

nPALF

O16

This output goes low to cause the printer

to automatically feed one line after each

line is printed. Connects to the AUTOFD

input on the next device along the chain.

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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