Epson 8900 Series manual Initialize Sequence

Parallel Interface Timing Requirements (continued)

Item	Ref.	Timing Requirements
	f	Trailing edge must occur before the host
		can strobe the next character into the
		receive buffer. For normal write cycles
		(receive buffer not full), this occurs at 10 μs
		min., 500 μs nom., and 1000 μs max. after
		the leading edge of STROBE-.
DATA1-8	g	The host writes the next character to the
		interface. This can occur at any time
		after the data stabilization time and hold
		time of the previous character have
		elapsed. (See Reference items a-band
		b-con the preceding page.)
STROBE-	h	The host places the next strobe pulse on
		the interface to initiate the next character-
		transfer operation.

Initialize Sequence

The initialize sequence is a host-generated power-up reset sequence. When the host activates INIT-, the printer performs the following sequence.

1.Interrupts any ongoing operation.

2.Assumes the offline state.

3.Executes the normal power-up self-test routine.

4.Returns to the online state.

Communication Interfaces 10-13