Intermec EasyCoder 501 - Data Shiftout to Printhead

Intermec EasyCoder 501 – Service Manual Ed. 7
136
Chapter 17 CPU Board
17.6:4 Data Shiftout to Printhead
WRADDR
AD0–AD15, A1-23
DATAOUT
IC511
ADSTB
/DMAHLDA
BUS
IC505
D
A9129AD8
D
A10138AD9
D
A11147AD10
D
A12156AD11
D
A13165AD12
D
A14174AD13
D
A15183AD14
D
A16192AD15
OE
1
LE
11
74HC573M
WRADDR
/DMAHLDA
GND
AD6
AD0
AD5
AD1
AD4
AD2
AD3 A20129
A19138
A21147
A18156
A22165
A17174
A23183
192
1
11
74HC166M
GND
SCLK
SHIFT
+5V
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0 14
12
11
10
5
4
3
2
1
9
15
7
6
13
GND
SCLK
SHIFT
+5V
GND
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
74HC166M
14
12
11
10
5
4
3
2
1
9
15
7
6
IC507
13
IOR
IOW
RD
WR
HOLDA
CSDMA
RESET
NDMAHOLD
EOP
DMAREADY
DMAREQ
13
12
11 /DMAHLDA
2
1
3
74HC02M
74HC04M
43
IC19B
R508
R509
82C37A
36EOP
25DMAACK
19SHIFT
24
18DREQ1
14
17DREQ2
15
16DREQ3
13RESET
12DMACLK
11CSDMA
10DMAREQ
9
8ADSTB
7DMAHLDA
6SHIFT
4WR
3RD
2IOW
1IOR
IC508
21 AD15
D7
22 AD14
D6
23 AD13
D5
26 AD12
D4
27 AD11
D3
28 AD10
D2
29 AD9
D1
30 AD8
D0
40 A8
A7
39 A7
A6
38 A6
A5
37 A5
A4
35 A4
A3
34 A3
A2
33 A2
A1
32 A1
A0
R510
EOP
DACK0
DREQ0
DACK1
DREQ1
DACK2
DREQ2
DACK3
DREQ3
RESET
CLK
CS
HREQ
AEN
ADSTB
HLDA
READY
MEMW
MEMR
IOW
IOR
3D
3D
2D
R
M1
1
1C3
1C2
1
SRG8
3D
3D
2D
R
M1
1C3
1C2
1
SRG8
IC504
D
D
D
D
D
D
D
D
OE
74HC574M
CLK
IC510
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
IC509D
&
74HC00M
1
IC17A
GND GND
+5V
R500
1
1
C500 – C509
+5V
GND
CTTL'
SHIFT
+5V
SHIFT
+5V
74HC163M
[8]
116
[4]
125
[2]
CLK/4134
[1]
1D
CLK/2143
5CT=0
1
G4
7
3CT=15G3
1510
M2
9
2C1/G5
2.3.4+
2
CTR4
IC506
R504
R505
R506
R507
IC509C
9
8
PCLK 10
1
74HC32M
IC503C
IOW 10
8
DMAACK 9
74HC74M
R
13+5V
8
C1
>
11
1D
12
9S
10
IC502B
DMACLK
CLK/4
+5V
74HC163M
[8]
116
[4]
125
[2]
134
[1]
1D
143
5CT=0
1
G4
7
3CT=15G3
1510
M2
9
2C1/G5
2.3.4+
2
CTR4
GND
&
PCLK
IC509B
4
6
5
&
74HC00M
PCLK
SCLK
IC503D
12
11
13
1
74HC32M
R501 R502 R503
IC503B
4
6
5
1
74HC32M
IC512A
1
3
2
&
74HC08M
IC512B
4
6
5
&
74HC08M
IC17D
11
13
12
1
74HC02M
EN-DOUBLE
CLK/4
CLK/8