Digital Output Signals - Bayer HealthCare RapidPoint 400 Series Service Manual

Input Signal
ENAVDD
LPT1DB<0..7>
LPT1STB-
LPT1INIT-
SPKR
COM1TX

Digital Output Signals

Output Signal
LPT1ERROR-
LPT1PE
LPT1BUSY
LPT1ACK-
LPT1SLCT
PRN_DATA_IN
PRN_CLOCK
PRN_LATCH-
DST1..6
78
Description
Control signal. This signal enables the positive supply for the
LCD.
Centronics type parallel port data bus.
The signal that indicates that valid data is present on
LPT1DB<0..7>.
The signal that initializes (resets) the printer control circuitry.
Speaker input signal.
Serial port transmit signal. This signal receives data on the
serial port.
Description
Indicates that there is an error associated with the printer.
Indicates that the printer is out of paper.
Handshake signal. This signal indicates that the printer is
currently busy and cannot accept any new data at this time.
Handshake signal. This signal asserts when LPT1BUSY is
becoming de-asserted.
The signal that indicates that the printer is online.
Data signal to the printer. Data is loaded into the printer in a
serial fashion (much like loading a shift register).
The signal that indicates that valid data is available on the
PRN_DATA_IN line.
The signal asserted to transfer the data from the shift register
to the buffers that drive the thermal elements internal to the
printer.
Thermal head strobe lines. These signals assert when data
have been loaded into the print head to burn the data.
Rev. C