WM2630

Production Data

WOLFSON MICROELECTRONICS LTD

PD Rev 1.1 February 2001

10

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 WM2630 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 WM2630 is controlled with a 16-bit code consisting of four address bits, A0-A3, and 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