WM2630
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 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
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
A1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
A0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
REGISTER
DAC A Code
0
0
DAC B Code
0
DAC C Code
0
DAC D Code
0
DAC E Code
0
DAC F Code
0
DAC G Code
0
DAC H Code
1
Control Register 0
Control Register 1
Preset all DACs
RESERVED
1
1
1
1
DAC A and complement B
DAC C and complement D
DAC E and complement F
DAC G and complement H
1
1
1
Table 4 Register Map
WOLFSON MICROELECTRONICS LTD
PD Rev 1.1 February 2001
10
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
