WM8728
Product Preview
PIN CONFIGURATION
LRCIN
DIN
BCKIN
MCLK
ZERO
DGND
DVDD
VOUTR
AGND
AVDD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
LATI2S
ORDERING INFORMATION
DEVICE
XWM8728EDS
TEMP. RANGE
-25 to +85
o
C
PACKAGE
20-pin SSOP
SCKDSD
SDIDEM
MUTEB
MODE
WM8728
15
14
13
12
11
CSBIWL
VREFP
VREFN
VMID
VOUTL
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NAME
LRCIN
DIN
BCKIN
MCLK
ZERO
DGND
DVDD
VOUTR
AGND
AVDD
VOUTL
VMID
VREFN
VREFP
CSBIWL
MODE
MUTEB
SDIDEM
SCKDSD
LATI2S
TYPE
Digital Input
Digital Input
Digital Input
Digital Input
Digital Output (Open drain)
Supply
Supply
Analogue Output
Supply
Supply
Analogue Output
Analogue Output
Supply
Supply
Digital Input
(pull-up)
Digital Input (pull-down)
Digital Bi-directional
Digital Bi-directional
Digital Input
(pull-down)
Digital Input
(pull-up)
DESCRIPTION
DAC Sample Rate Clock Input: PCM Input Mode
Right Channel DSD Bitstream Input: DSD Input Mode
Serial Audio Data Input: PCM Input Mode
Left Channel DSD Bitstream Input: DSD Input Mode
Audio Data Bit Clock Input
Master Clock Input
Infinite ZERO Detect Flag
Digital Ground Supply
Digital Positive Supply
Right Channel DAC Output
Analogue Ground Supply
Analogue Positive Supply
Left Channel DAC Output
Mid Rail Decoupling Point
DAC Negative Reference – normally AGND, must not be below AGND
DAC Positive Reference – normally AVDD, must not be above AVDD
Software Mode: 3-Wire Serial Control Chip Select
Hardware Mode: Input Word Length
Control Mode Selection (L = Hardware, H = Software)
Mute Control (L = Mute on, H = Mute off, Z = Automute Enabled)
Software Mode: 3 or 2-Wire Serial Control Data Input:
Hardware Mode: De-Emphasis Select
Software Mode: 3 or 2-Wire Serial Control Clock Input
Hardware Mode: DSD Bitstream Operation Select
Software Mode 3-Wire Serial Control Load Input
Hardware Mode: Input Data Format Selection
Note:
Digital input pins have Schmitt trigger input buffers.
WOLFSON MICROELECTRONICS LTD
PP Rev 1.2 April 2001
2
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
