Epson SEIJ98006 manual Typical Time of Tack, Parameter Minimum Maximum

EPSON Stylus Color 900 Revision C

Table 1-9. Data Transmission Timing

Parameter	Minimum	Maximum
tsetup	500ns	---
thold	500ns	---
tstb	500ns	---
tready	0	---
tbusy	---	500ns
tt-out*	---	120ns
tt-in**	---	200ns
treply	0	---
tack	500ns	10us
tnbusy	0	---
tnext	0	---

NOTE: tt-out shows the rise and fall time of every output signal. tt-in shows the rise and fall time of every input signal. Typical time of tack is shown in Table 1-10.

Table 1-10. Typical Time of Tack

Parallel Interface Mode	Typical Time of Tack
High speed	1 us
Normal speed	3 us

Table 1-11. Signal level for TTL Compatible

(IEEE-1284 level 1 device)

Parameters	Minimum	Maximum	COndition
VOH*	---	5.5V
VOL*	-0.5V	---
IOH*	---	0.32mA	VOH = 2.4V
IOL	---	12mA	VOL = 0.4V
CO	---	50pF
VIH	---	2.0V
VIL	0.8V	---
IIH	---	0.32mA	VIH = 2.0V
IIL	---	12mA	VIL = 0.8V
CI	---	50pF

*A LOW logic level on the Logic H signal is as follows:

2.0V or less when the printer is turned off.

3.0V or more when the printer is turned on.

The receiver provides an impedance equivalent to 7.5 K Ω to ground.

See Table 1-12 which shows the connector pin assignment and signals for the forward channel of the parallel interface.

Product Description Interface 24