
1
2
3
4
5
6
7
A
B
C
D
E
F
G
7
6
5
4
3
2
1
G
F
E
D
C
B
A
Title: Digital AV Decoder
Approved by:
Drawn by:
File Name:
Path: M:\IanS\temp\temp.ddb - Documents\SC011C91.SCH
Print date:
Drawn date:
Issue:
Sheet of
2-Apr-2008
0
Huntingdon, United Kingdom.
This drawing is the intellectual property of Cyrus Electronics Ltd.
O
c
Description:
12
13
12
Sheet
Host Micro-controller Address Decoding and Expansion Registers
1-Apr-1999
Cummins/Sells
1
2
3
14
7
IC1203A
MC74HC00AD
C1205
47n
GND
+5Vaddr
GND
4
5
6
IC1203B
9
10
8
IC1203C
hc11E
hc11RnotW
12
13
11
IC
1203D
C1204
47n
+5Vaddr
GND
EnableWriteRegs
/WRITE
/READ
/EnableWriteRegs
hc11A11
hc11A13
hc11A14
hc11A12
8
9
10
IC1204C
C1206
47n
2
3
1
14
7
IC1204A
74HC02AD
5
6
4
IC1204B
11
12
13
IC1204D
/CE RAM
/CE ROM
hc11A15
/dspRESET
EnableMasterClock
SelectIEC958Input[1]
SelectIEC958Input[0]
SelectTAPEOutput
/FrontPanel GreenLED
/FrontPanel RedLED
R1201
10k
/StrobeWriteReg[1]
/EnableWriteRegs
C1208
47n
GND
GND
D1
2
Q1
19
D2
3
Q2
18
D3
4
Q3
17
D4
5
Q4
16
D5
6
Q5
15
D6
7
Q6
14
D7
8
Q7
13
D8
9
Q8
12
OE
1
CP
11
GND
10
VC
C
20
IC1205
MC74HCT574ADW
/StrobeWriteReg[0]
/EnableWriteRegs
C1210
47n
GND
GND
D1
2
Q1
19
D2
3
Q2
18
D3
4
Q3
17
D4
5
Q4
16
D5
6
Q5
15
D6
7
Q6
14
D7
8
Q7
13
D8
9
Q8
12
OE
1
CP
11
GND
10
VC
C
20
IC1206
MC74HCT574ADW
To Host Micro
hc11D0
hc11D1
hc11D2
hc11D3
hc11D4
hc11D5
hc11D6
hc11D7
hc11D0
hc11D1
hc11D2
hc11D3
hc11D4
hc11D5
hc11D6
hc11D7
FrontPanel BackLight
/PSX Standby
+5V
L1202
1.0u-FSL
C1207
47n
GND
+5V
L1203
1.0u-FSL
C1209
47n
GND
GND
SlowMicFilter
RP1201
CAT16-470J4
47R
RP1202
CAT16-470J4
47R
RP1203
CAT16-470J4
47R
RP1204
CAT16-470J4
47R
/audioRESET
VC
C
16
GND
8
B
2
C
3
G2A
4
G2B
5
G1
6
Y7
7
Y4
11
Y3
12
Y2
13
Y1
14
Y0
15
A
1
Y6
9
Y5
10
IC1202
MM74HC138M
/StrobeWriteReg[0]
/StrobeWriteReg[1]
hc11E
Display E
GND
To Host Micro
/Display E
/Display E
SelectIEC958Input[2]
L1201
1.0u-FSL
GND
C1201
47n
GND
C1202
47u
6.3V
+5V
+5Vaddr
GND
+5Vaddr
GND
3 TO 8 DECODER FOR MICRO ADDR DECODE
GND
GND
VOL_CE