Oki MSM7731-02 User Manual Download Page 24

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FEB

7731-

02-
02

Us
er’s

M
a

nual for

Sem

iconductor

M
S

M
7731-02 E

valuation B

oard

- 20 -

Figure

3 Peripheral

Circuits

3 V

VCC

Y4
B4
A4
Y3
B3
A3

R16

10k

R10

100

R12

22k

RV2
20k

R11
2.2k

C12
1

C11
10

L1
FB

J2
MIN

TP5

R21
1.2k

L2
FB

J4
MOUT

R20
22k

RV5
50k

LIN

LGSX

LVFRO

LPWI

LOUT

MIN

GND

MOUT

Figure 3-1 MIN-LIN and MOUT-LOUT

R7
100

22k

RV1
20k

R8
2.2k

C10
1

C9
10

J1
MIC

AIN

AGSX

3 V

Figure 3-2 MIC-AIN

R15
1.2k

R13
22k

R14
22k

AVFRO

APWI

AOUT

Figure 3-3 SP-AOUT

RV4
10k

C13
1

C14
0.1

1
2
3
4

8
7
6
5

J3
SP

R17

470k

C15
10 pF

U13
LM4816

VCC

QH
QG

QF
QE

CLR
CLK

14
13
12
11
10

9
8

1
2
3
4
5
6
7

A
B
QA
QB
QC
QD
GND

74HC164

U11

VCC

4B
4A
4Y
5B
5A
5Y

14
13
12
11
10

1
2
3
4
5
6

1A
1B
1Y
2A
2B
2Y
GND

74HC00

VCC

A6
Y6
A5
Y5
A4
Y4

14
13
12
11
10

9
8

1
2
3
4
5
6
7

A1
Y1
A2
Y2
A3
Y3
GND

74HC04

VCC

CLR2

CLK2

PR2

14
13
12
11
10
9
8

1
2
3

5
6

CLR1
D1
CLK1
PR1
Q1

GND

74HC74

14
13
12
11
10

9
8

1
2
3
4
5
6
7

74HC02

16
15
14
13
12
11
10

1
2
3
4
5
6
7
8

74HC161

VCC

CK1

D
C
B
A

16
15
14
13
12
11
10

1
2
3
4
5
6
7
8

S/L
CLK
E
F
G
H

GND

74HC165

14
13
12
11
10

9
8

1
2
3
4
5
6
7

Y1
A1
B1
Y2
A2
B2
GND

VCC

RCO

QA
QB
QC
QD

ENT

CLR
CLK
A
B
C
D
ENP
GND

VCC

CLR2

CLK2

PR2

CLR1
D1
CLK1
PR1
Q1

GND

74HC74

VCC

CLR2

CLK2

PR2

14
13
12
11
10
9
8

1
2
3
4
5
6
7

CLR1
D1
CLK1
PR1
Q1

GND

74HC74

VCC

CK1

D
C
B
A

16
15
14
13
12
11
10

1
2
3
4
5
6
7
8

S/L

CLK
E
F
G
H

GND

74HC165

U10

VCC

4B
4A
4Y
5B
5A
5Y

14
13
12
11
10

9
8

1
2
3
4
5
6
7

1A
1B
1Y
2A
2B
2Y
GND

74HC00

U12

SB3
SB3
SB3
SB3

A3
A2
A1
A0

D4
D5
D6
D7

D3
D2
D1
D0

D0
D1
D2
D3

D7
D6
D5
D4

SB3
SB3
SB3
SB3

LED
LED
LED
LED

3 V

SB4

DSW 6

SB3

R/W

SB4

DSW 6

DIN

BCLK

EXCK

DEN

DOUT

RA6
10k

3 V

RA6
10k

3 V

Figure 3-4 MCU-Interface

SET
SW19

TP1

C24
0.1

L3
FB

C22
47

C16
0.1

TP2

L4
FB

C23
47

C18
0.1

C25
0.1

U15

78M08

U16

78M05

IN OUT

GND

IN OUT

GND

IN OUT

GND

U14

29M03

VO6C

Figure 3-5 Power Supply

C17
47

C19
47

5 V

3 V

DC12V

GND

Summary of Contents for MSM7731-02

Page 1: ...FEBL7731 02 02 User s Manual for MSM7731 02 Evaluation Board Oki Electric Industry Co Ltd Ver 2 0 February 2000 1...

Page 2: ...strial and intellectual property right etc is granted by us in connection with the use of the product and or the information and drawings contained herein No responsibility is assumed by us for any in...

Page 3: ...1 11 Spare Area for Additional Amplifier 2 1 12 LED Indicator 2 1 13 On board Crystal 2 1 14 Measurement Location for External Oscilloscope 2 2 BOARD SCHEMATICS 3 3 FUNCTIONAL DESCRIPTIONS 3 3 1 Test...

Page 4: ...to Set Cancellation Echo Delay Time 11 4 6 1 Single EC Mode Acoustic Echo Cancellation Mode 11 4 6 2 Dual EC Mode Acoustic and Line Echo Cancellation Mode 12 4 7 How to Set Noise Cancellation Levels 1...

Page 5: ...and Ground Pin TP1 and TP2 The 12 V power supply is suitable for the evaluation in car environment as it is available for a cigarette lighter adapter and battery of an automobile In the board the sin...

Page 6: ...s an option by using the area of U15 1 12 LED Indicator On board LEDs are used for the confirmation of the register contents 1 13 On board Crystal The 19 2 MHz crystal is equipped on the board An osci...

Page 7: ...the evaluation board consists of external microcontroller interface pins When you want to evaluate your microcontroller connect the appropriate pins of the microcontroller to these pins When the micr...

Page 8: ...ed when all the switches are set to ON 3 3 Toggle Switch SW Toggle switches are used for the register setting in the on board register mode and external MCU mode SW1 and SW10 are also used in the pin...

Page 9: ...o Figure 3 1 of this user s manual 3 5 Variable Resistor RV 3 5 1 RV1 RV1 is a variable resistor to control the input gain from a microphone through the J1 MIC mini jack The MIC jack is connected to t...

Page 10: ...er to Table 2 2 for details 1 CLKSEL External clock mode Internal clock mode 2 ECSEL Single EC mode Dual EC mode 3 MCUSEL MCU interface disabled MCU interface enabled 4 PCMSEL law PCM mode 16 bit line...

Page 11: ...B 0 dB 0 1 6 dB 6 dB 1 0 12 dB 12 dB 1 1 18 dB 18 dB Table 2 4 Transmitting and Receiving Gain Adjustment RPAD4 RPAD3 RPAD2 RPAD1 TPAD4 TPAD3 TPAD2 TPAD1 Level 0 1 1 1 0 1 1 1 21 dB 0 1 1 0 0 1 1 0 18...

Page 12: ...et for settings of DSW1 5 DSW 2 2 DSW2 5 DSW 2 7 DSW3 and DSW5 7 Set all the switches of DSW6 to ON 8 Connect TP3 to the cellular phone when the digital line interface is selected Connect TP5 or J2 an...

Page 13: ...escription of the MSM7731 02 Data Sheet for setting of DSW2 5 SYNCSEL 3 Set all the switches of DSW6 to OFF 4 Set DSW1 DSW2 other than DSW2 1 DSW2 5 DSW3 DSW4 and DSW5 to 0 5 Connect TP3 to the cellul...

Page 14: ...L Set to 1 Set to 0 Set to 0 DSW2 4 PCMSEL a Analog I F Mode Set to 0 b Digital I F Mode Setting at your choice Set to 0 Set to 0 DSW2 5 SYNCSEL Setting at your choice Setting at your choice Setting a...

Page 15: ...nts of the register is displayed on LED2 to LED9 for confirmation LED2 to LED9 correspond to B0 to B7 of Control Registers CR respectively 4 6 How to Set Cancellation Echo Delay Time 4 6 1 Single EC M...

Page 16: ...ues of cancellable echo delay time are 44 ms and 15 ms respectively In order to change the default values use the MCU mode using the external microcontroller or MCU mode using the on board register in...

Page 17: ...er 4 6 1 of this manual Table 6 1 Noise Canceler Address Noise Canceler Address 1 Noise Canceler Address 2 Data to be written Noise Canceler Mode 01C8h 01C2h As per Table 6 2 Table 6 2 Noise Cancellat...

Page 18: ...4 Level tuning of the path from MIN to SP with a cellular phone connected STEP 5 Level tuning of the path from MIC microphone to MOUT with a cellular phone connected and control of voice quality 5 2...

Page 19: ...output by using a single tone a Maintain the previous PADs for controlling the echo canceler noise canceler and transmit receive gain as set in STEP 1 b Connect the audio analyzer HP made 8903B to th...

Page 20: ...0 to disable NCPAD 7 AATT Set this switch to 0 to enable the acoustic attenuator 8 AGC Set this switch to 0 to enable the acoustic gain controller c Enable the communication between the far end cellul...

Page 21: ...nd level control procedure is complete 6 PRECAUTIONS 1 The clock outputs SYNC BCLK are disabled during the power down reset mode Since the on board MCU control circuit is activated by the clock signal...

Page 22: ...4 SW3 SW2 D7 D6 D5 D4 D3 D2 D1 D0 SW17 SW16 SW15 SW14 SW19 SW18 SW1 R W SET SW1 PDNRST RST LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 D7 D6 D5 D4 D3 D2 D1 D0 RV2 RV5 RV1 RV4 CX15 U15 R18 R19 C26 Addition...

Page 23: ...1 SB1 SB1 SB1 SB1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DSW2 DSW2 DSW3 DSW3 DSW3 DSW3 DSW3 DSW4 DSW4 DSW4 DSW4 DSW4 DSW5 DSW5 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 MSM7731 U1 32 31...

Page 24: ...8 1 2 3 4 5 6 7 74HC02 U7 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 74HC161 U5 VCC CK1 D C B A SI QH 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 S L CLK E F G H QH GND 74HC165 U9 14 13 12 11 10 9 8 1 2 3 4 5...

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