Citizen Systems CBM-231 manual Timing Chart, Buffering

CBM-230/231 User’s Manual

6.3.3Timing Chart

(1)Data input and printing timing

T1, T2, T3	0.5	MIN
T4	270 ns	MAX
T5	￿V	TYP
T6	500 ms	MIN (at power on)

6.3.4 Data Receiving Control￿￿￿

When the BUSY signal is at LOW, the data from the host side can be received, but when 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 DS1-4. When a 4KB buffer is selected, the host side is immediately free because a large amount of data can be buffered.

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