A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
DTMF DECODER 1
DRAWN BY: N1LTL
12 GND
31 GND
DTMF DECODER 0
EXPANSION
CONNECTORS
23 GND
12 GND
4 GND
SPEECH REC/PLAY
11 GND
REMOTE BASE
REPEATER
11 +5V
32 +5V
27 +3.3V
18 +3.3V
INIT
20 +5V
10 GND
DIGITAL OUTPUTS
DTMF DECODER 2
18 +5V
09 GND
+12V
13 GND
14 +5V
DTMF/TONE GENERATOR
N O T I C E
THIS DRAWING CONTAINS
P R O P R I E T A R Y I N F O RMATION WHICH
I S T H E C O N F IDENTIAL PROPERTY
C O P I E D , R E P RODUCED, DISCLOSED,
P U B L I S H E D O R USED IN PART OR
W H O L E WITHOUT THE EXPRESSED
O F N H R C L L C. IT SHALL NOT BE
W R I T T E N P E R M I S SION OF NHRC LLC.
S P E C I F I C A T I ONS SUBJECT TO CHANGE
WITHOUT NOTICE OR OBLIGATION.
CI-V
EEPROM
8 +5V
4 GND
CI-V INTERFACE
PIC uP
CTRL RX
DNP
R3: CI-V TEST POINT
PCB REV B
B
NHRC-10 (Digital)
1+5& 5HSHDWHU &RQWUROOHUV
444 Micol Road
Pembroke, NH 03275
603-485-2248
B
1
3
M o n d ay, November 15, 1999
http://www.nhrc.net
Title
Size
Document Number
Rev
Date:
Sheet
of
DTMF1_DV
DIGOUT_SELECT
EEPROM_SELECT
SCK
MISO
MOSI
TXD
RXD
DTMF0_DV
AN0
DTMF_SELECT
TONE_SELECT
DTMF0_DV
DTMF1_DV
ISD_RAC
SCK
ISD_SELECT
MOSI
MISO
MAIN_RX_AUDIO
ISD_INT
ISD_RAC
MISO
EXP_SELECT
MOSI
SCK
AN0
AN1
AN1
DTMF_SELECT
DIGOUT_SELECT
DTMF2_DV
ISD_SELECT
DTMF_SELECT
DTMF2_DV
DTMF_SELECT_2
EXP_SELECT
DTMF_SELECT_2
CTRL_RX_AUDIO
ISD_INT
PL_ENCODE
PL_ENCODE
PL_ENCODE
D2
D5
D7
D4
D4
D3
D2
D6
D6
D7
D3
D1
D4
D[0..7]
D3
D0
D2
D2
D7
D2
D1
D6
D3
D3
D0
D0
D0
D7
D5
D0
D1
D1
D4
D5
D1
D0
D6
D2
D4
D5
TONE_SELECT
D[0..7]
D[0..7]
D3
D1
D5
TXD
RXD
MISO
EEPROM_SELECT
SCK
MOSI
CI-V
CI-V
CTRL_RX_AUDIO
RB_RX_AUDIO
FAN_OUT
TX_AUDIO
RB_TX_AUDIO
COR
PL_DET
PHONE_RING
RB_PL_DET
RB_COR
MAIN_RX_AUDIO
PTT
CAS
PL_DEC
RB_RX_AUDIO
RB_PTT
RB_CAS
RB_PL_DEC
SPEECH_AUDIO
RECORD_AUDIO
TT_DECODE_PHONE
TT_DECODE_MAIN
DTMF_AUDIO
PTT_ENABLE
RB_PTT_ENABLE
FAN_CONTROL
MUTE_MAIN
MUTE_RB
MUTE_PHONE
MUTE_SPEECH_TT
PHONE_OFF_HOOK
DTMF0_DV
DTMF1_DV
DTMF2_DV
+3.3V
+12V
+3.3V
+12V
+5V
+3.3V
+3.3V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
RB_RX_AUDIO
R49
10K
1
2
C37
0.1uF
1
2
C38
0.1uF
1
2
R3
0
1
2
J11
HEADER 10
1
2
3
4
5
6
7
8
9
10
C33
33pF
1
2
R1
4.7K
1
2
R6
470
1
2
R7
10K
1
2
J2
CONNECTOR DB9F
5
9
4
8
3
7
2
6
1
Y2
3.5795MHz
1
2
J6
COAX POWER JACK
1
2
3
J1
CONNECTOR DB9F
5
9
4
8
3
7
2
6
1
R73
10K
1
2
U12
MT8870
8
7
1
2
4
3
16
15
17
10
5
6
11
12
13
14
OSC2
OSC1
IN+
IN-
VREF
GS
EST
STD
ST/GT
TOE
INH
PWDN
Q1
Q2
Q3
Q4
Q1
2N3904
1
2
3
C46
33pF
1
2
Q2
2N3904
1
2
3
R64
10K
1
2
R54
470K
1
2
J9
HEADER 10
1
2
3
4
5
6
7
8
9
10
U10
PIC16F877-20/P
1
2
3
4
5
6
7
13
14
33
34
35
36
37
38
39
40
15
16
17
18
23
24
25
26
19
20
21
22
27
28
29
30
8
9
10
MCLR/VPP
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/VREF
RA4/TOCKI
RA5/AN4/SS
OSC1/CLKIN
OSC2/CLKOUT
RB0/INT
RB1
RB2
RB3
RB4
RB5
RB6
RB7
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
U11
MT8870
8
7
1
2
4
3
16
15
17
10
5
6
11
12
13
14
OSC2
OSC1
IN+
IN-
VREF
GS
EST
STD
ST/GT
TOE
INH
PWDN
Q1
Q2
Q3
Q4
C47
33pF
1
2
C39
0.1uF
1
2
R62
10K
1
2
R53
470K
1
2
F2
1/2 A
1
2
U6
74HC573
2
3
4
5
6
7
8
9
11
1
19
18
17
16
15
14
13
12
D1
D2
D3
D4
D5
D6
D7
D8
C
OC
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
C43
0.1uF
1
2
C36
0.1uF
1
2
U9
ISD4004-10
2
3
1
28
26
25
24
17
16
13
14
27
18
4
11
12
23
MOSI
MISO
SS
SCLK
XCLK
INT
RAC
ANA IN+
ANA IN-
AUDOUT
AMCAP
VCCD
VCCA
VSSD
VSSA
VSSA
VSSA
D1
1N4002
1
2
U14
PCD3311CP
8
9
10
11
12
4
7
1
2
5
3
6
D0/SCL
D1/SDA
D2
D3
D4
D5
A0
OSCI
OSCO
STB
MODE
TONE
D2
1N5231B
1
2
C12
0.1uF
1
2
VR4
10K
1
3
2
+
C32
22uF
1
2
Y1
16MHz
1
2
C44
15pF
1
2
C45
15pF
1
2
+
C31
22uF
1
2
R60
0
1
2
R55
10K
1
2
U13
25LC320
2
5
6
7
1
3
SO
SI
SCK
HOLD
CS
W P
R51
33K
1
2
U7
MT8870
8
7
1
2
4
3
16
15
17
10
5
6
11
12
13
14
OSC2
OSC1
IN+
IN-
VREF
GS
EST
STD
ST/GT
TOE
INH
PWDN
Q1
Q2
Q3
Q4
+
C22
1uF
1
2
+
C5
1uF
1
2
R52
100K
1
2
J7
3.5mm JACK
2
3
1
R48
470K
1
2
J8
3.5mm JACK
2
3
1
C26
0.1uF
1
2
R2
4.7K
1
2
R50
10K
1
2
SW1
JUMPER
1
2