PPC34C60 datasheet(7/58 Pages) SMSC

7 / 58 page

SMSC DS – PPC34C60

Page 7

Rev. 06/01/2001

ADVANCED INFORMATION

DESCRIPTION OF PIN FUNCTIONS

PIN NO.

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

nPass-Through:

SelectIn

nPSEL

O16

This active low output selects the printer.

Connects to the SELECT IN 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:

Initiate

nPINIT

O16

This active low output initiates the printer

when low. Connects to the INIT 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:

Acknowledge

nPACK

I, PU

This active low input 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 output

from 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.

Pass-Through:

Busy

PBSY

I, PU

This status input, generated by the printer

goes high to indicate that it is not ready to

receive new data from the Pass-Through.

Connects to the BUSY output from the

next device along the chain. Refer to

Section 4 of the IEEE STD 1284

(Reference 1) for use of this pin in

ECP/EPP modes.

Pass-Through:

Paper End

PPE

I, PU

This status input, generated by the

printer, goes high to indicate that the

printer is out of paper. Connects to the

PERROR output from 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.

Pass-Through:

Printer Selected

PSLCT

I, PU

This status input, generated by the

printer, goes high to indicate that the

printer is selected.

Connects to the

SELECT output from the next device

along the chain. Refer to Section 4 of the

IEEE STD 1284 (Reference 1) for use of

this pin in ECP/EPP modes.

nPass-Through:

Printer Error

nPERR

I, PU

This status output, generated by the

printer, goes low to indicate an error

condition at the printer. Connects to the

ERROR output from 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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