Service manual

Product Description
LC?-2070 Service Manual
DATA
‘
TROBE
~tsetu~< tstb !
BUSY
1
p-r
I
&
!
treadv~l>
tbusy
ACKNLG
I I
Figure 1-8 Data Transmission Timing
Table 1-32 Maximum and Minimum Timings for Data Transmission
Parameter
Minimum
Maximum
setup
500 nsec
-...
thold
500 nsec
-----
t stb
500
nsec
. . . . .
tready
0
-...
tbusy
-..
500
nsec
treply
-..
-...
tack
500 nsec
10 ~
tnbusy
o
-...
tnext
o
-...
ttout
-..
120 nsec
ttin
-..
200
nsec
0 The BUSY signal is active (HIGH level) under the conditions below:
0 During data receipt.
0 If the input buffer is full.
0 If the INITsignal is active (LOW level).
0 During hardware initialization.
0 In self-test mode.
0 In adjustment mode.
0 In default-setting mode.
0 The ERROR signal is active (LOW level) under the conditions below:
0 If there is a fatal error.
0 If there is a paper-out error.
0 If the cover is open (cover open error).
.
PE signal is active (HIGH level) under the conditions below:
0 If there is a paper-out error.
1-22
Rev.A