Citizen Systems BD2-2220 - Manual (Page 306)

- 306 -
(14) Upon receiving a request for interrupt from the printer, the host responds by setting HostBusy (nAutoFd) to
High. (Event 20)
(15) Finally, the printer responds to the host by setting AckDataReq (PError) to Low, and then the host moves to
the Host Busy Data Available phase. (Event 21)