Epson Stylus PHOTO 2000P Service Manual page 16

EPSON Stylus PHOTO 2000P
Table 1-5. Parameters
Parameter
tsetup
thold
tstb
tready
tbusy
*1
tt-out
*2
tt-in
treply
tack
tnbusy
tnext
*1:Rise and fall time of every output signal.
*2:Rise and fall time of every input signal.
Typical timing for tack is shown below.
Table 1-6. Typical Time of Tack
Parallel I/F Mode
High Speed
Normal Speed
Product Descriptions
Minimum Maximum
500ns -
500ns -
500ns -
0 -
- 500ns
- 120ns
- 200ns
0 -
500ns 10us
0 -
0 -
Typical Time of tack
0.5us
2us
Signal Level: TTL Compatible (IEEE-1284 level 1 device)
Parameter
VOH*
VOL*
IOH*
IOL*
CO
VIH
VIL
IIH
IIL
CI
* A low logic level on the Logic H signal is 2.0V or less when the printer is
powered off, and this signal is equal to or exceeding 3.0V when the printer
is powered on. The receiver shall provide an impedance equivalent to 7.5K
ohm to ground.
Interface
Table 1-7.
Minimum Maximum
- 5.5V
-0.5V -
- 0.32mA VOH = 2.4V
- 12mA VOL = 0.4V
- 50pF
- 2.0V
0.8V -
- 0.32mA VIH = 2.0V
- 12mA
- 50pF
Revision A
Condition
VIL = 0.8V
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