WM8736 Datasheet, PDF (9/17 Pages) Wolfson Microelectronics plc – 24-bit, 96kHz 6-Channel DAC with Volume Control

Production Data
WM8736
MODES OF OPERATION
Control of the various modes of operation is either by software control over the serial interface, or
by hard-wired pin control. Selection of software or hardware mode is via MODE pin. The following
functions may be controlled either via the serial control interface or by hard wiring of the
appropriate pins.
FUNCTION
OPTIONS
Input audio data format Normal format
Input word length
De-emphasis selection
Mute
I²S format
16
18
20
24
On
Off
On
Off
SOFTWARE CONTROL
DEFAULT VALUE
PIN 8: MODE = 0
I²S = 0 (default)
I²S = 1
IW[1:0] = 00 (default)
IW[1:0] = 11
IW[1:0] = 01
IW[1:0] = 10
DE = 1
DE = 0 (Default)
MU = 1
MU = 0 (default)
HARDWARE CONTROL
BEHAVIOUR
PIN 8: MODE = 1
Pin 12, 13: ML/I2S, MC/IWL =
00 or 01 or 10
Pin 12, 13: ML/I2S, MC/IWL = 11
Pin 12, 13: ML/I2S, MC/IWL = 00
Pin 12, 13: ML/I2S, MC/IWL = 11 (I²S only)
Pin 12, 13: ML/I2S, MC/IWL = 01
Pin 12, 13: ML/I2S, MC/IWL = 10
Pin 14: MD/DM = 1
Pin 14: MD/DM = 0
Pin 9: MUTE = 1
Pin 9: MUTE = 0
Reset and power down
control
Input LRCIN polarity
Volume control
Infinite zero detect
WM8736 off
WM8736 on
Lch/Rch =
High/Low
Lch/Rch =
Low/High
Lch, Rch
individually
Lch, Rch
common
On
Off
Operation enable (OPE)
Enabled
Disabled
DAC output control
See Table 7
for all options
Available from Pin 10: RSTB
LRP = 0 (default)
LRP = 1
ATC = 0; 0dB (default)
ATC = 1
IZD = 1
IZD = 0 (default)
OPE = 0 (default)
OPE = 1
Default is PL[3:0] = 1001, stereo mode
Table 3 Control Function Summary
Pin 10: RSTB = 0
Pin 10: RSTB = 1
Not available in hardware mode,
default value set
Not available in hardware mode,
default 0dB
Automute function controlled
from MUTE pin
low = not mute
Z = automute enable
high = muted
Not available in hardware mode
WOLFSON MICROELECTRONICS LTD
PD Rev 2.1 January 2001
9