Ieee1284 Interface - Brother HL-2030 Service Manual

CHAPTER 3 THEORY OF OPERATION
1.3.3

IEEE1284 interface

Stores the data received from the PC into DRAM by DMA using the Gate Array
(UPD65421MC-11) exclusive for parallel I/F. It is for the normal receipt and dual direction
communication (nibble mode, byte mode, ECP mode).
< HL-2040 >
CDCC_RSTN
1-5F
CDCC_INTN
1-5F
CDCC_REQN
1-5F
CDCC_CLK
1-5F
CDCC_DATA
1-5F
CDCC_GA
@U12
1
VDD51
7
VDD57
16
VDD516
30
VDD3
@C100
15
GND15
26
GND26
@R134
TP159
1k
21
RSTN/SIN
@C112
C104
0V
TP157
@R131
24
INTN
100
TP155
6
ACKN
TP156
@R132 22 5
REQN/SOUT BUSY
100 4
PE
3
SELECT
TP146 TP150
@R2 25 28
CLK/SCK FLTN
100
2
AFN
TP154
@R5 23 29
DATA SELINN
100 27
INITN
17
STBN
13
AMC
20
CDCC_0V SMC
18
D0
19
D1
14
D2
12
D3
11
D4
10
D5
9
D6
8
D7
CDCC-GA
0V
TP190
@C97
@L11
VDD3
BLM18PG181SN1
@C143
C104
C103
(1608)
TP191
@L12
BLM18PG181SN1
CDCC_0V
VDD5
@RA4 0
1 8
2 7
3 6
4 5
@R121 0
0V
TP161
@RA8
100
1 8
2 7
6
3
4 5
@RA7
100
1 8
7
2
TP158 3 6
4 5
Fig. 3-7
3-6
VDD5
C103
0V
VDD5
TP148
1 8
2 7
3 6
4 5
@RA3 100
VDD5
DF5A6.8FU
0V
@DA1
DF5A6.8FU
0V
@DA3
CDCC
@CN10
10
ACK
11
BUSY
12
PE
13
SELECT
32
FLT
14
ATFEED
36
SELIN
31
INPRIM
1
STB
DF5A6.8FU
@ZD5
@DA2
UDZS6.8B
2
DI1
3
DI2
4
DI3
5
DI4
6
DI5
7
DI6
8
DI7
9
DI8
15
NC NC
33
NC NC
34
NC
NC
DF5A6.8FU
35
NC NC
@DA4
18
VDD5 +5V
16
0V
17
0V
19
0V
20
0V
21
0V
22
0V
23
0V
24
0V
25
0V
26
0V
27
0V
28
0V
29
0V
30
0V 0V
37
IF_FG2 FG
38
FG
IF_FG3
57RE40360-730B-D29
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