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34
34
MEX-BT2500
MEX-BT2500
•
Waveforms
– MAIN Board –
– KEY Board –
1
IC501
ul
(XOUT)
500 mV/DIV, 20
µ
s/DIV
30.4
µ
s
1.1 Vp-p
2
IC501
id
(OSCOUT)
1 V/DIV, 20 ns/DIV
54 ns
3.4 Vp-p
qa
IC971
rf
(OSC)
1 V/DIV, 10
µ
s/DIV
25.5
µ
s
2.6 Vp-p
•
IC Block Diagrams
– MAIN Board –
IC50 TDA7333013TR
1
VDDA
2
REF3
3
REF2
4
REF1
5
VSS
6
TM
7
VDDD
8
RESETN
16 MPX
15 INTN
14 CSN
13 SA_DATAOUT
12 SDA_DATAIN
11 SCL_CLK
10 XTO
9
XTI
SIGMA DELTA
CONVERTER
RDS DEMODULATOR
&
SYNCHRONISATION
RAM BUFFER
&
CONTROL LOGIC
TEST LOGIC
&
PIN MIX'S
SINC4
FILTER
I2C/SPI
INTERFACE
BANDPASS
FILTER
INTERPOLATOR
OSCILLATOR
TESTREG
SPL
SCK
SDAIN
SDAOUT
MPX
SINC4
REG
IC300 TDA8588BJ/N2/R1
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT-FL-
OUT-FL+
OUT-RL-
OUT-RL+
IN-RL
S-GND
IN-RR
OUT-RR+
OUT-RR-
OUT-FR+
OUT-FR-
DIAG
ANT-REM
AMP-REM
SERVO5V
MECH6V
VP
B.UP+B
SDA
SCL
VP2
PGND3
SVR
IN-FL
IN-FR
BEEP
PGND2
VP1
STB
PGND1
RST
CRES
AUDIO8.3V
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
Summary of Contents for MEX-BT2500
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