WM8728
Production Data
PIN DESCRIPTION
PIN
1
NAME
LRCIN
DIN
TYPE
Digital Input
Digital Input
Digital Input
Digital Input
Digital Output (Open drain)
Supply
DESCRIPTION
DAC Sample Rate Clock Input: PCM Input Mode
Serial Audio Data Input: PCM Input Mode
Audio Data Bit Clock Input
2
3
BCKIN
MCLK
ZERO
DGND
DVDD
VOUTR
AGND
AVDD
VOUTL
VMID
4
Master Clock Input
5
Infinite ZERO Detect Flag (L = IDZ detected, H = IDZ not detected).
Digital Ground Supply
6
7
Supply
Digital Positive Supply
8
Analogue Output
Supply
Right Channel DAC Output
9
Analogue Ground Supply
10
11
12
13
14
15
Supply
Analogue Positive Supply
Analogue Output
Analogue Output
Supply
Left Channel DAC Output
Mid Rail Decoupling Point
VREFN
VREFP
CSBIWL
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
Supply
Digital Input
(pull-up)
16
17
18
MODE
MUTEB
SDIDEM
Digital Input (pull-down)
Digital Bi-directional
Digital Bi-directional
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
19
20
SCK
Digital Input (pull-down)
Software Mode: 3 or 2-Wire Serial Control Clock Input
Software Mode 3-Wire Serial Control Load Input
Hardware Mode: Input Data Format Selection
LATI2S
Digital Input
(pull-up)
Note:
Digital input pins have Schmitt trigger input buffers.
PD Rev 4.2 April 2004
4
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
