Winbond W6810 Manuale utente

WECA W6810DK

2727 N First Street, San Jose CA 95134

Winbond W6810 Codec

Evaluation System

User’s Guide

W6810DK Evaluation Board Rev 1.06

查询W6810_1供应商捷多邦，专业PCB打样工厂，24小时加急出货

WECA W6810DK

2727 N First Street, San Jose CA 95134

Chapter - 1...................................................................................................................................................... 3

General Description........................................................................................................................................ 3

Introduction: ................................................................................................................................................... 3

W6810DK Features:....................................................................................................................................... 3

Figure 1: W6810DK Evaluation System Component Placement ............................................................................. 4

Chapter - 2...................................................................................................................................................... 5

Hardware Description..................................................................................................................................... 5

Clock Generator: ............................................................................................................................................ 5

Frame Sync:.................................................................................................................................................... 5

BIT CLOCK:.................................................................................................................................................. 6

256 KHZ:........................................................................................................................................................ 6

Figure 2: W6810DK Evaluation System Schematics diagram....................................................................... 7

Chapter - 3...................................................................................................................................................... 9

Jumper Descriptions ....................................................................................................................................... 9

J2A: Frame Sync: .................................................................................................................................. 10

J3: Power Supply 5VDC.......................................................................................................................... 10

J4: GND TST points ................................................................................................................................ 10

J5: Side Tone ........................................................................................................................................... 10

J6: VAG CAP ENABLE: ........................................................................................................................ 10

J7: Transmitter......................................................................................................................................... 10

J8: RJ11 Handset connector.................................................................................................................... 10

J9A: 2.5V Reference Voltage ................................................................................................................. 10

J9B: SPKR+ = PAO ................................................................................................................................ 10

J10: A-Law and µ-Law Selection: ........................................................................................................... 10

J11: 2x20 pin Header:.............................................................................................................................. 11

J12A: SPKR- = R0- ................................................................................................................................. 11

J12B: SPKR-=PA0+ ................................................................................................................................ 11

J13: PCMT:.............................................................................................................................................. 11

J14: BCLKT=BCLK................................................................................................................................ 11

J15A: MCLK = 256KHz ......................................................................................................................... 11

J15B: MCLK=BCLK............................................................................................................................... 11

J16A: POWER-UP .................................................................................................................................. 11

J16B: POWER-Down.............................................................................................................................. 11

J17A: BCLKR = BCLK........................................................................................................................... 11

J17B: BCLKR = BCLK........................................................................................................................... 12

J17C: BCLKR = BCLK........................................................................................................................... 12

J18: PCMT = PCMR ............................................................................................................................... 12

J19A: FSR = FSYNC .............................................................................................................................. 12

J19B: FSR = VCC ................................................................................................................................... 12

J19C: FSR = GND................................................................................................................................... 12

J20: FSX= FSYNC .................................................................................................................................. 12

J21: Receiver Path ................................................................................................................................... 12

Chapter - 4.................................................................................................................................................... 13

Operation Modes .......................................................................................................................................... 13

Standalone Operation: .................................................................................................................................. 13

Back-To-Back Operation: ............................................................................................................................ 14

Chapter - 1

General Description

Winbond’s W6810DK Evaluation/Development System is a Stand-Alone unit that serves

as a simple, easy-to-use demonstration board as well as a powerful evaluation system. All

the functions of the W6810 PCM Codec may be selected in real time to allow complete

evaluation of this IC for an end application. The hardware includes many useful

connectors that will allow easy connection to external hardware for use as an evaluation

tool.

Introduction:

The W6810 is a member of the W68XX family of PCM Codecs. This CMOS product

includes a single voice band CODEC. The CODEC complies with the specifications of

the ITU-T G.712 recommendation. The W6810 also includes a complete µ-Law and A-

Law compander. The µ-Law and A-Law companders are designed to comply with the

specifications of the ITU-T G.711 recommendation. The system can work at 256 kHz,

512 kHz, 1536 kHz, 1544 kHz, 2048 kHz, 2560 kHz & 4096 kHz clock rates. The system

clock is supplied through the master clock input and can be derived from the bit-clock if

desired.

User I/O to the W6810DK Evaluation board is provided via a number of connectors.

These connectors are:

• A 40-pin header provides access to W6810 analog and digital signals (J11)

• RJ11 handset jack (J8)

• Analog transmit(J8) and receive path headers.(J7,J21)

W6810DK Features:

• Easy to use (a stand-alone evaluation system)

• Single 5 V power supply

• Single 3v Power Supply for W6811 or W68310

• Prototype area for application development

• Useful connectors that can be used to connect to standard test equipment

• RJ11 jack for standard handset

WECA W6810DK

2727 N First Street, San Jose CA 95134

Prototype

Area

J11 Connector for Back-To-

Back Operation Mode

RJ11 Handset connector

Power Jack

Frame Sync Width

Selector

J1 BIT CLOCK

Select

W6810 Socket

J9A

Dip Switches Select JX

J9B

J10A

J10B

J12A

J12B

J15A

J15B

J16A

J16B

J13

J14

J18

J19A

J20

J19B

J19C

J17

WECA W6810DK

2727 N First Street, San Jose CA 95134

SW5

SW4

SW3

SW2

Figure 1: W6810DK Evaluation System Component Placement

Chapter - 2

Hardware Description

Clock Generator:

All the necessary clock rates such as Frame Sync, Bit Clock and the 256KHz for the

W6810DK evaluation system are driven from a single 4.096MHz crystal oscillator.

Frame Sync:

The Frame Sync is generated on the W6810DK evaluation board. J19 and J20(SW5)

control the FSR (Frame Sync Receive) and FSX (Frame Sync Transmit) routing.

Populating these jumpers also routes the signal to the 40-pin header (J11).

Setting Dip Switches:

Switch SW2 selects the width of the Frame Sync. The pulse width is set as a number of

BCLKs. The following number of BCLKs for Frame Sync can be set with SW2.

• 1-2-3-4-5-6-7-8

The Dip-Switch SW2 configurations are:

Frame Sync = 8 BCLK Frame Sync = 7 BCLK

Frame S

nc = 6 BCL

OFF

Frame Sync = 5 BCLK

OFF

WECA W6810DK

2727 N First Street, San Jose CA 95134

WECA W6810DK

2727 N First Street, San Jose CA 95134

Frame S

nc = 4 BCL

Frame S

nc = 3 BCL

OFF

Long Frame Sync Short Frame Sync

OFF

Frame Sync = 1

Frame Sync = 2

OFF

BIT CLOCK:

Bit clock is routed to the 2x20 (J11) header connector pins 5 (BCLKT) and 36 (BCLKR)

through J17A and J14. J1 is used to select the frequency at which Bit Clock operates. The

selected frequencies are 4.096 MHz, 2.048 MHz, 1.024 MHz, 512KHz, 128KHz and

64KHz.

256 KHZ:

The 256 KHz is a possible frequency setting for the master clock (MCLK) J15A(SW4)

input on the chosen PCM Codec-filter. J15B will configure the MCLK input to have a

frequency equal to Bit Clock.

WECA W6810DK

2727 N First Street, San Jose CA 95134

VCC

3.9K

BCLKR

C18

.1uF

J21

BCLKT

R13

20K

SW DIP

20K

MCLK

RJ11

R11

20K

PCMO

C15

.01uF

J10

SW DIP

J15

SW DIP

R12

20K

J19

SW DIP

FSX

C14

68uF

J20 SW DIP

MIC+

C13

1uF

VCC

J14

SW DIP

J13

SW DIP

J17

SW DIP

100

R10

200K

VCC

C11

1uF

MIC-

VCC

J18SW DIP

VCC

R15

47k

VCC

J12

FSR

R14

C10

1uF

C17

1uF

W6810

Vref

PAI

PAO-

PAO+

VDD

FSR

PCMI

BCLKR

PUI

VAG

AI+

AI-

U/A

VSS

FSX

PCMO

BCLKT

MCLK

619

J16

SW DIP

PCMO

C12

.1uF

C16

68uF

J11

HEADER 20X2

39 VCC

20K

VCC

R16

20K

Ext

Analog

Input

256KHz

FSYNC

BCLK

Handset

Receive

Audio

Figure 2: W6810DK Evaluation System Schematic Diagram

U4B

74HC393/SO

CLK

CLR

.1uF

68uF

+5VDC

128KHz

BCLK

U5B

74HC393/SO

CLK

CLR

U4A

74HC393/SO

CLK

CLR

U1A

74HCU04/SO

1 2

512KHz

VCC

HEADER

1024KHz

PWR OFF/ON

U1F

74HCU04/SO

13 12

Off

4.096MHz

U1B

74HCU04/SO

3 4

10M

2048KHz

VCC

HEADER 2X2

PJ_202A

22pF

4096KHz

SW1

EG1903-ND

22pF

U1D74HCU04/SO

9 8

RP1

10K

.1uF

32KHz

U1E74HCU04/SO

11 10

256KHz

8KHz

.1uF

330

U5A

74HC393/SO

CLK

CLR

100

U1C

74HCU04/SO

5 6

VCC

SW2

.1uF

U5U4

LED

64KHz

VCC

U6A

74HC74

CLK

PRE

CLR

VCC

1N5341

U3A

74HC74

CLK

PRE

CLR

74HC165

9 10

Q7 SDI

CLK

CKE

WECA W6810DK

2727 N First Street, San Jose CA 95134

FSYNC

BCLK

256KHz

Figure 3: W6810DK Evaluation System Schematic Diagram:

WECA W6810DK

2727 N First Street, San Jose CA 95134

Chapter - 3

Jumper Descriptions

Dips switches on the left hand corner of the evaluation system are used to select a

particular jumper. When a Jumper is populated (switch is closed), it enables the function;

an unpopulated Jumper(Open Switches) disables the function. A Jumper, when

referenced as a letter for example J7A, J7B. Only one Jumper is populated for a selected

function not both.

Please see page 4.Figure 1: W6810DK Evaluation System Component Placement

WECA W6810DK

2727 N First Street, San Jose CA 95134

J1: Bit Clock Select:

J1 selects the Bit Clock frequencies from 4.096MHz to 64KHz.

J2A: Frame Sync:

J2A sets the Frame Sync (FSR) to 8KHz (SW3-2)

J3: Power Supply 5VDC

J4: GND TST points

J5: Side Tone (SW3-6)

J5 enables the side tone path on the PCM Codec filter

J6: VAG CAP ENABLE: (SW4-1)

J6 enables VAG filter cap

J7: Transmitter

Transmit output level at 1000Hz: -46dBV ± 4dB

Output Impedance at 100 Hz: 1000 ± 300 Ω

J8: RJ11 Handset connector.

J9A: 2.5V Reference Voltage (SW3-7)

J9A is not used.

J9B: SPKR+ = PAO (SW3-8)

J9B connects pin 4 W6810 to the RJ11 handset

J10: A-Law and µ-Law Selection: (SW4-2)

J10A Selects µ _Law and J10B Selects A-Law.

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