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AMBE-2000™ and AMBE-2020™ Vocoder Chip Interface Applications Note Jan 03

C7

100nF

Title

Size

Document Number

Rev

Date:

Sheet

of

1

1

PCM3500

B

1

1

Monday, February 03, 2003

Analog In

C6

1nF

R4

220

+

C4

10uF

J1

Handset

2

2

3

3

1

1

4

4

R9

4.7K

+

C14

10uF

3.3VA

R7

5.6K

R6

10K

C10

0.2uF

U2

PCM3500

Vcom

1

Vref1

2

Vref2

3

Vin

4

AGND

5

M/S

6

TSC

7

BCK

8

FS

9

DIN

10

DOUT

11

FSO

12

DGND

14

Vdd

13

Vcc

24

AGND

23

Vout

22

AGND

21

/PDWN

20

Loop

19

HPFD

18

XTI

17

XT0

16

SCKIO

15

3.3 V

CODEC_TX/RX_CLK

CODEC_TX/RX_STRB

+

-

U1B

5

6

7

R5

220K

3.3VA

R10

10K

3.3VA

+

C13

10uF

R8

10K

Analog Out

3.3 V

3.3 V

Y1

1

2

4.096 MHz

C8

1

2

C9

1

2

22pf

22pf

C11

1

2

C12

1

2

0.1uF

4.7uF

CODEC_RX_DATA

CODEC_TX_DATA

1

2

3.3 V

C5

1

2

C3

1

2

C2

1

2

+

-

U1A

3

2

1

4

11

C1

47nF

2.2uF

4.7uF

4.7uF

3.3VA

R1

20K

R2

2.1K

R3

887

Figure 2