WM2629CDT データシートの表示（PDF） - Wolfson Microelectronics plc

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WM2629CDT

Octal 8-bit, Serial Input, Voltage Output DAC with Power Down

Wolfson Microelectronics plc 

WM2629

Production Data

DAISY CHAINING MULTIPLE DEVICES

The DOUT output (pin 19) provides the data sampled on DIN with a delay of 16 clock cycles. This

signal can be used to control another WM2629 or similar device in a daisy-chain type circuit.

OCTAL DAC #1

OCTAL DAC #2

OCTAL DAC #3

Figure 9 Daisy Chaining

SOFTWARE CONFIGURATION OPTIONS

DATA FORMAT

The WM2629 is controlled with a 16-bit code consisting of four address bits, A0-A3, and up to 12

data bits.

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

A3 A2 A1 A0

Data

Table 3 Input Data Format

Using the four address bits, 16 different registers can be addressed.

A3

A2

A1

A0

REGISTER

0

0

0

0

DAC A Code

0

0

0

1

DAC B Code

0

0

1

0

DAC C Code

0

0

1

1

DAC D Code

0

1

0

0

DAC E Code

0

1

0

1

DAC F Code

0

1

1

0

DAC G Code

0

1

1

1

DAC H Code

1

0

0

0

Control Register 0

1

0

0

1

Control Register 1

1

0

1

0

Preset all DACs

1

0

1

1

RESERVED

1

1

0

0

DAC A and complement B

1

1

0

1

DAC C and complement D

1

1

1

0

DAC E and complement F

1

1

1

1

DAC G and complement H

Table 4 Register Map

WOLFSON MICROELECTRONICS LTD

PD Rev 1.0 April 2001

10

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