RC-BM5
1-35
3. Pin function
RIPPLE
AM-RFI
FM-RFO
RFGND
FMOSC
AMOSC
V
CC1
TUNE
VCO
AFO
MPXI
LFI
MUTE
AFLO
AFRO
PILFIL
IFGND
FMDEM
AFC
(n)
AFC
(p)
FSI
V
CC2
V
DDD
MO/ST
XTAL
DGND
BUS-CLOCK
DATA
WRITE-ENABLE
P0
P1
AFC
FM-IFI2
V
STAB(B)
FM-IFO1
AM-IFI/O2
FM-IFI1
V
STAB(A)
FM-MIXER
AM-MIXER
AM-IFI1
RFGND
FM-RFI
AGC
I
I
-
-
-
-
-
O
I
O
I
I
I
O
O
I
-
I
O
O
-
-
-
O
I
-
I
I/O
I
O
O
I
I
-
O
I/O
I
-
O
O
I
-
I
I
Pin No.
Symbol
I/O
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Ripple capacitor input
AM-RF input
Parallel tuned FM-RF circuit to ground
RF ground and substrate
Parallel tuned FM-oscillator circuit to ground
Parallel tuned AM-oscillator circuit to ground
Supply voltage
Tuning current output
Voltage controlled oscillator input
AM/FM AF output (output impedance typical 5k )
Stereo decoder input (input impedance typical 150k )
Loop-filter input
Mute input
Left channel output (output impedance typical 4.3k )
Right channel output (output impedance typical 4.3k )
Pilot detector filter input
Grond of IF,detector and MPX stage
Ceramic discriminator input
AFC negative output
AFC positive output
Field-strength indicator
Supply voltage for tuning
Digital supply voltage
Mono/stereo and tunig indication output
Crystal input
Digital ground
Bus-clock input
Bus data input/output
Bus write-enable input
Programmable output port (P0)
Programmable output port (P1)
450kHz LC-input circuit
FM-IF input 2 (input impedanc typical 330 )
Internal stabilized supply voltage (B)
FM-IF output1 (output impedance typical 330 )
Input/output to IF-Tank (IFT);output:current souce
FM-IF input1 (input impedance typical 330 )
Internal stabilized supply voltage (A)
Ceramic filter output (output impedance typical 330 )
Open-collector output to IFT
IFT or ceramic filter input (input impedance typical 3k )
FM-RF ground
FM-RF aerial input (input impedance typical 40 )
AGC capacitor input
Содержание RC-BM5
Страница 41: ...RC BM5 2 1 A B C D E F G 1 2 3 4 5 Block diagram ...
Страница 48: ...RC BM5 2 8 RC BM5 H A B C D E F G 1 2 3 4 5 Printed circuit boards Main board Reverse side ...
Страница 49: ...RC BM5 2 9 A B C 1 2 3 4 5 Tuner board Cassette board Reverse side Reverse side ...
Страница 50: ...RC BM5 2 10 A B C D 1 2 3 4 5 Display board Reverse side Power amplifier board Reverse side ...
Страница 51: ...RC BM5 2 11 A B C 1 2 3 4 5 Volume switch board Reverse side Phone jack board Reverse side ...