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P500
DATA BUS (7:0)
DO-D7
IAC ADDRESSING
A16
A
A17
B
U501
A18
C
A19
D
Q3
A13-A19
A13
G1
A
O3
A14
B
O2
U500
A15
C
O5
MREQ
G2
O7
O4
O1
O6
THERMAL
SENSOR
Q1
READ
RD
INTR
U506
WRITE
WR
D0-D7
V IN+
+
K501
Q501
ALARM 2 OUT
-
+
K500
Q500
ALARM 1 OUT
-
LED CONTROL
+5V
MISC INPUTS
Q1
D0-D7
Q2
Q3
Q1-Q8
U518
U508
Q4
U517
CLK
Q5
OC
Q7
Q6
Q8
D1
U507D
J500
ANALOG LEVEL DETECTOR
RSSI O
U509A
U509B
U507B
U519
U509C
U507C
IFA IN
CLK
Q5
Q6
D1-D8
Q3
Q2
Q4
Q1
U503
Q7
RF INTERFACE
P501
Q1
RF MUX 1 INH
Q2
RF MUX 2 INH
D0-D7
Q3
RF MUX 3 INH
Q4
PC STR
U505
Q5
HS CS EX
Q6
STN CS EX
Q7
HS CS RX
Q8
STN CS RX
CLK
D3
WO 1
D2
AC FAIL IN
D8
OC
U521
Q1-Q8
CLK
Q1
RF DATA A
Q2
RF DATA B
D0-D7
Q3
RF DATA C
Q4
RF DATA
U504
Q5
RF CLK
Q6
AC FAIL OUT
Q8
Q7
WO 2
U508E
EXT REQ 1
U507A
A D LEVEL
+
Q502
K502
ALARM 3 OUT
-
+
Q503
K503
ALARM 4 OUT
-
U514A
U514B
BUF RX WBAND
RX WBAND
INVERTED
NON-INVERTED
U503 CONTROL
NON-INVERTED
October 1999
Part No. 001-2009-201
S500
+5V
ALARM INPUTS
CR507
U520
CR506
S501
+5V
CR509
U510
CR508
D1
D2
D6
U513C
D3
D4
S502
+5V
CR511
U511
CR510
U513B
S503
+5V
CR513
U512
CR512
J505
Q504
Q505
INTERFACE ALARM CARD BLOCK DIAGRAM
FIGURE 6-23
6-52
P500
+
ALARM 1 IN
+15V
-
+
+15V
ALARM 2 IN
-
EXT REQ 2
J503
+
+15V
ALARM 3 IN
-
J504
+
+15V
ALARM 4 IN
-
SQUELCH
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