Oki Data CONFIDENTIAL42113931TH Rev.1 12 /2.1.3 InitializationThis printer is initialized when the power is turned on or when the I-PRIME-N signal is inputfrom the host side via the parallel interface.For the initialize operation, the RST-N signal is first output from the reset circuit to reset theSOC and Flash ROM. When resetting ends, the program starts. Reset operation by I-PRIMEstarts program to initialize, but does not reset the SOC.The program here sets the mode of the SOC, checks the memories (ROMs and RAMs), thencarries out carriage homing, and determines the LF motor phase.Finally, the program establishes the interface signals (P-I/F: ACK-P signal sending, and S-I/F:BUSY-N signal off) and lights the SELECT lamp to inform the ready state for receiving to thehost side and ends the initialize operation.After USB I/F control I/O initialization and USB I/F bus opening.EndI/F BUSY OFFSerialI/FI/F ACK SendParallelI/FLF Motor PhaseInitializationCarriage HomingUSB I/F Bus OpenRAM ClearROM CHECKInternal RAMCHECKSOCInitial SettingSOC RESETStart
