Instruction manual

ACU-1000 Operations Manual
Interoperability Now 5-13
1
15
9
8
P13
U10B
AUDIO
INTERFACE
U24
A/D D/A
BACKPLANE I/O
LATCHES &
DRIVERS
U16 - U18
DIGITAL
OUTPUTS
Q1, Q2, Q3
DIGITAL
INPUTS
U44-C,D,E
1
2
3
JP1
1
2
3
4
5
6
P6
INTERNAL
SPEAKER
HSP-2A MODULE
AUDIO BUS 1 TO 16
DATA BUS 1 TO 8
CONTROL BUS
2
3
4
5
6
7
10
11
12
13
14
A
10K
4.7K
22K
L
N
H
47K
22K
100K
L
N
H
Speaker
INT/EXT
Handset
On/Off
Speaker
Head
Phones
PTT
U10A
U11
U12B
Speaker
Driver
Earpiece
Driver
U12A
MIC
Preamp
Jumpers
MIC In
Line In
Volume
U5-U7, U15
16 Audio Gates
U1-U4
16 Audio Gates
U59-U62
16 Audio Gates
AUDIO BUS
CONTROL
LATCHES
U52-U53
68HC11
PROCESSOR
U30
AUDIO BUS
CONTROL
LATCHES
U19 - U22
Line
Level
MIC
Level
0 dBm
560
560
Monitor Out
1
2
3
JP10
SPKR/
TXB GND
TXB/GND
DSP
PROCESSOR
U67
Figure 5-1 HSP-2A Block Diagram