UPD7210C (1/3)
il08 n-mos general purpose interface bus-interface controller
?op view 12
13
14
15
16
17
18
19
3
21
22
23
7
8
9
10 d0
d1
d2
d3
d4
d5
d6
d7
rs0
rs1
rs2
dmaack
cs
rd
wr dio1
dio2
dio3
dio4
dio5
dio6
dio7
dio8
eoi
ndac
nrfd
dav
srq
atn
ren
ifc
t/r1
t/r2
t/r3
int
dmareq 28
29
30
31
32
33
34
35
39
38
37
36
27
26
25
24
1
2
5
11
6 reset 4 t/r1 out
t/r2 out
ck in
reset in
t/r3 out
dmareq out
dmaack in
cs in
rd in
wr in
int out
d0 i/o
d1 i/o
d2 i/o
d3 i/o
d4 i/o
d5 i/o
d6 i/o
d7 i/o 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21 v dd
eo1 i/o
ndac i/o
nrfd i/o
dav i/o
dio8 i/o
dio7 i/o
dio6 i/o
dio5 i/o
dio4 i/o
dio3 i/o
dio2 i/o
dio1 i/o
srq i/o
atn i/o
ren i/o
ifc i/o
rs2 i/o
rs1 i/o
rs0 i/o
gnd
UPD7210C (2/3) input
cs
dmaack
rd
rs0 - rs2
wr
output
dmareq
int
t/r1 - t/r3
input/output
atn
d0 - d7
dav
dio1 - dio8
eoi
ifc
ndac
nred
ren
srq
: chip select
: dma acknowledge
: read enable
: register select
: write enable
: dma request
: interrupt request
: transmit/receive control
: attention
: data bus
: data valid
: data
: end or identify
: interface clear
: not data accepted
: not ready for data
: remote enable
: service request
aux command message
decoder interface
functions sh1
ah1
t5/te5
l3/le3
sr1
rl1
pp1/pp2
dc1
dt1
c1
c2
c3
c4
c5 read
write
cont. command
pass
through address
status data in byte out address
mode aux
(a)/(b)/(e) parallel
poll serial
poll interrupt
status 1/2 internal
counter end of
string address
0/1 interrupt
mask 1/2 cs rs0 - rs2 d0 - d7 rd wr dmareq 8 9 10 6 dio1 - dio8 gpib
control t/r1 - t/r3 int 11 ck 3 reset 4 dmaack 7 registers UPD7210C (3/3) 12 - 19 21 - 23 28 - 35 24 - 27,
36 - 39 1, 2, 5
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