Table 1-32 Maximum andMinimum Timings for Data Transmission
Parameter Minimum Maximum
setup 500 nsec ——-
thold 500nsec ——-
tstb 500 nsec ——-
tready 0 ——-
tbusy —— 500nsec
treply —— ——-
tack 500 nsec 10µs
tnbusy 0 ——-
tnext 0 ——-
ttout —— 120 nsec
ttin —— 200 nsec
❒TheBUSY signal is active(HIGH level) under the conditions below:
❒During data receipt.
❒Ifthe input bufferis full.
❒Ifthe INIT signalis active (LOW level).
❒During hardware initialization.
❒In self-testmode.
❒In adjustmentmode.
❒In default-settingmode .
❒TheERROR signal is active(LOW level) under theconditions below:
❒Ifthere is a fatal error.
❒Ifthere is a paper-out error.
❒Ifthe cover is open(cover open error).
PE signalis active (HIGH level) under theconditions below:
❒Ifthere is a paper-out error.
data byte n data byte n+1
t
hold
t
setup
t
stb
t
next
t
ready
t
busy
t
reply t
ack
t
nbusy
DATA
STROBE
BUSY
ACKNLG
Figure 1-8 Data Transmission Timing
Product Description FX-2170 Service Manual
1-22 Rev.A