Epson 2070 Service Manual - Page 31

Data Transmission Timing, Table 1-32 Maximum and Minimum Timings for Data Transmission

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Product Description DATA LC?-2070 Service Manual 'T R O B E ~tsetu~< tstb ! BUSY 1 I &! treadv~l> tbusy ACKNLG I I p-r Figure 1-8 Data Transmission Timing Table 1-32 Maximum and Minimum Timings for Data Transmission Parameter setup thold t stb tready tbusy treply tack tnbusy tnext ttout ttin Minimum 500 nsec 500 nsec 500 nsec 0 -.. -.. 500 nsec o o -.. -.. Maximum 500 nsec -... 10 ~ -... -... 120 nsec 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

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Product Description
LC?-2070
Service Manual
DATA
‘
T
R
O
B
E
~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