Citizen Systems iDP-3540 - Manual (Page 27)

iDP-3540/41 User’s Manual
CITIZEN 27/48
9-3-4. Data Receiving Control
When the BUSY signal is LOW, your printer receives data from the host side, but when this signal
is HIGH, it cannot receive data.
9-3-5. Buffering
Data transfer to the input buffer is controlled by the DTR and TD signals.
Please refer to 9-3-1 b) for the DTR signal and 9-3-1 f) for the TD signal.