73M1966B-EVM Datasheet 73M1966B-EVM | P13-P15

73M1966B Evaluation Kit User Manual UM_1x66B_024

13 Rev. 1.0

5 Motherboard Schematic, PCB Layouts and BOM

5.1 Schematic

CLKO

5VDC

GND

3.3V

Y1

2.048MHz oscillator

VCC

4

OUT

3

GND

2

OE

1

J57 should

be

removed when

using

the PCM-4

TP38

1

VCC3.3

J1

Banana

TP39

1

J57

Jumper On Small

SPKR EN

TP48

1

VCC3.3

U4

LP2985

V_IN

1

GND

2

ON/OFF

3

BYPASS

4

V_OUT

5

C32

0.01uF

C26

0.1uF

C6

1uF

J2

Banana

VCC3.3

C28

2.2uF

C33

4.7uF

INTB

FS

CLKI

TP40

1

TP41

1

DX

DR

FS_PCM

DR

G5

1

G6

1

G1

1

G2

1

G3

1

G4

1

DX_PCM

J33

D LOOPBACK

1

2

3

G7

1

G8

1

J30

RJ-11

1

2

3

4

5

6

TP42

1

TP43

1

DR_PCM

DR

RSTB

1966 RESET

R28

100K

SW4

SW_PB_SPST

R29

1K

VCC3.3

J24

1

2

3

4

5

RSTB

AUDIO

R68

200

D3

Red LED

A

C

TP44

1

J41

1966 MASTER MODE

1

2

3

RA HEADER

CLKO

CLKI_PCM

FS_PCM

VCC3.3

J32

HEADER 6

1

2

3

4

5

6

R49

20K

TP31

CALL PROG.

1

J42

HEADER5X2

1

2

3

4

5

6

7

8

9

10

R46

120K

LS1

INTERVOX

AT-2308

J4

FROM MASTER

1

2

3

4

5

6

7

8

C27

1uF

J6

PCM HIWAY INTERFACE

1

2

3

4

5

6

7

8

TP8

GND

1

RIGHT SIDE OF BOARD

LEFT SIDE OF BOARD

RA SOCKET CONN.

S1

4 SOCKET

1

2

3

4

TP22

TSCB

1

C45

0.1uF

J43

1

2

3

4

5

J3

TO SLAVE

1

2

3

4

5

6

7

8

S2

SOCKET 10X2

1

3

5

7

9

11

13

15

17

19

2

4

6

8

10

12

14

16

18

20

U3

NJM2135M

CD

1

-VIN

4

V+

6

GND

7

VOUT1

5

VOUT2

8

VREF1

2

VREF2

3

J31

HEADER 6

1

2

3

4

5

6

+

C29

2.2uF

J5

POWER CONNECTOR

O

3

I

1

S

2

C25

1uF

J44

1

2

3

4

5

R48

20K

CLK_I/O

TP32

1

FS_PCM

S3

POWER_SWITCH

J45

1

2

3

4

5

VCC3.3

DX_PCM

DR_PCM

J46

1

2

3

4

5

VCC3.3

TP33

1

FS_PCM

TSC

CLKO

TP46

1

GUI INTERFACE

TP34

TEST POINTS

1

SDO

SDI

DR

TP26

CLK IN TP

1

SCLK

CSB

TP27

CLK OUT TP

1

DX_PCM

TP28

DR TP

1

TP35

1

TP29

DX TP

1

S

M

TP30

FS TP

1

DX_PCM

TP36

1

TP37

TEST POINTS

1

J47

MUTE

1

2

3

TP47

1

SDIT

CLKI_PCM

SDIT

TP45

1

TP49

1

CLK_I/O

CLKI_PCM

Figure 5: 73M1966 Motherboard Schematics

UM_1x66B_024 73M1966B Evaluation Kit User Manual

Rev. 1.0 14

5.2 PCB Layouts

Figure 6: Motherboard: Silk Screen Top

Figure 7: Motherboard: Top Layer

UM_1966B_024 73M1966B Evaluation Kit User Manual

Rev. 1.0 15

Figure 8: Motherboard: Bottom Layer

73M1966B-EVM

73M1966B-EVM

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