E F Johnson Company 2422001-1 Benutzerhandbuch
MAIN AUDIO CARD LOGIC BLOCK DIAGRAM
FIGURE 6-18
6-46
August 2000
Part No. 001-2001-200
Part No. 001-2001-200
A0-A19
ADDRESS LATCHES
U103
A-D
A16-A19
U133
A-D
A12-A15
D1
G1
MREQ 15
P101
Q4
Q5
Q6
Q7
Q8
Q9
Q2
Q1
Q3
G2
U154B
U101E
MPC LATCH
OC
D3
D4
D0-D7
D2
D1
U105
MSTB 16
EXT REQ
P100
LOCAL MIC PTT
Q102
DIR
S1
D0-D7
D0-D7
U161
TX FIFO
DE
S0
MR
DOR
A0-A7
U101C
U154D
U111
AUDIO/DATA
MICROPROCESSOR
P3-7
A8-A15
D0-D7
P1-3
P1-1
P1-1
U162D
U119
RESET
VOTER DATA IN 58
Z102
U136
+9V REG
+15V 30
+15V 62
P3-6
P1-0
P1-2
A13
A14
A15
Y2
Y1
U102
A
B
C
ADDRESS SELECT
ALE
PSEN
P1-6
P1-7
P3-2
P3-3
P3-0
RST
P3-4
U117B-8 TX DATA EN
U126A-3 TX SHAPE
U126A-3 TX DATA
U125D-14 RX DATA
U159B-8 LOGIC SQUELCH
U119
U101D
U104
A0-A7
Q0-Q7
C EN
ADDRESS/DATA BUS (7:0)
D0-D7
A8-A14
OE
U112
A0-A7
S1
DIR
MR
A0-A7
D0-D7
S0
DE
DOR
U160
RX FIFO
U154A
U101F
D1-D8
U108
GATE LATCHES
CLK
U107
U106
U156
U155
U157
CLK
D1-D8
CLK
D1-D8
CLK
D1-D8
CLK
D1-D8
CLK
D1-D8
U115A VOTER AUDIO MUTE
U114D LOCAL AUDIO MUTE
U113C RX MUTE
U114A RX OPTION
U115B RX VOICE
U116B RX AUDIO
U115C RX VOICE TO BACKPLANE
U116A FSK TO AUDIO
U153C REPEAT
U153D TxS TO FSK
U116D TxA TO FSK
U159C DATA TO A D
U116C Tx AUDIO
U158A Tx VOICE
U153A DATA LEVEL TEST
U100B CWID CONTROL
U159A LEVEL DETECT
U158C Tx OPTION
U117C LOCAL MIC MUTE
U118C EXTERNAL MOD MUTE
U118B NORMAL MOD MUTE
U118D Tx MOD MUTE
U151-U149 INC
U151-U149 U/D
CS0
CS1
CS2
CS3
WO 125
CS5
CS6
WO 126
U153B Tx NET
U115D Rx NET
CS10
CS11
U149 CS12
WO 127
U151 CS14
CS15
U117A Tx INTERCOM
U113D Rx SQ ACTIVE
U159B LOGIC SQ A D
U159D Tx MOD A D
U113B NORMAL Rx
WO 118
WO 117
WO 116
EPROM
LOWER ADDRESS LATCH
ACCRESS BUS (15:8)
DATA BUS (7:0)
RX FIFO
TX FIFO
U17-1