Figure B-6 Parallel Port Connector Pin Configuration; Table B-6 Parallel Port Connector Pin Assignments - Sun Microsystems Ultra 60 Service Manual

FIGURE B-6
TABLE B-6
Pin
1
2 to 9
10
11
12
13
B-12 Sun Ultra 60 Service Manual • August 2001
13
Parallel Port Connector Pin Configuration
Parallel Port Connector Pin Assignments
Mnemonic Signal Name
Data_Strobe_L Data Strobe Low
Data[0..7] Data0 Thru Data7
ACK_L Acknowledge Low
BUSY Busy
PERROR Parity Error
SELECT_L Select Low
25
Description
Set low during forward channel
transfers to latch data into
peripheral device. Set high during
reverse channel transfers.
The main data bus for the parallel
port. Data0 is the least significant
bit (LSB). Are not used during
reverse channel transfers.
Driven low by the peripheral
device to acknowledge data byte
transfer from host during forward
channel transfer. Qualifies data
being transferred to host in reverse
channel transfer.
Driven high to indicate the
peripheral device is not ready to
receive data during forward
channel transfer. Used to send
Data3 and Data7 during reverse
channel transfer.
Driven high by peripheral device
to indicate an error in the paper
path during forward channel
transfer. Used to send Data2 and
Data6 during reverse channel
transfer.
Indicates the peripheral device is
on-line during forward channel
transfer. Used to send Data1 and
Data5 during reverse channel
transfer.
1
14