Figure 1-8 Data Transmission Timing - Epson FX-2170 Service Manual

Product Description
DATA
STROBE
BUSY
ACKNLG
Table 1-32 Maximum and Minimum Timings for Data Transmission
Parameter
setup
thold
t stb
tready
tbusy
treply
tack
tnbusy
tnext
ttout
ttin
The BUSY signal is active (HIGH level) under the conditions below:
During data receipt.
If the input buffer is full.
If the INIT signal is active (LOW level).
During hardware initialization.
In self-test mode.
In adjustment mode.
In default-setting mode.
The ERROR signal is active (LOW level) under the conditions below:
If there is a fatal error.
If there is a paper-out error.
If the cover is open (cover open error).
PE signal is active (HIGH level) under the conditions below:
If there is a paper-out error.
1-22
data byte n
t h old
tsetup
tstb
tb u s y
tready

Figure 1-8 Data Transmission Timing

Minimum
500 nsec
500 nsec
500 nsec
0
——
——
500 nsec
0
0
——
——
FX-2170 Service Manual
data byte n+1
tnext
trep ly tack tn b u s y
Maximum
——-
——-
——-
——-
500 nsec
——-
10 s
——-
——-
120 nsec
200 nsec
Rev.A