Citizen Systems CBM-231 6.3.3 Timing Chart, 6.3.4 Data Receiving Control, 6.3.5 Buffering

CBM-230/231User ’sManual
19 CITIZEN
6.3.3 Timing Chart
(1) Data input and p rinting timing
T1,T
2,T 30.5 MIN
T4270ns MAX
T5TYP
T6500 ms MIN (at power on)
6.3.4 Data Receiving Control
When the BUSY signa l is at LOW, the data from the host s ide can be received, but w hen at HIGH, it cannot be
received.
6.3.5 Buffering
A size of the input buffer can be selected by setting the DIP switch segment D S1-4. When a 4KB buffer is
selected, the host side is immediately free because a large amount of da ta can be buffe red.