WM8746 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8746 Datasheet PDF : 32 Pages
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WM8746
Production Data
PIN DESCRIPTION
PIN
NAME
1
DVDD
2
SCKI
3
BCKIN
4
LRCIN
5
DIN0
6
DIN1
7
DIN2
8
MODE
9
MUTE
10
LRCIN2
11
DGND
12
ML/I2S
TYPE
Supply
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Internal pull-up
Digital bidirectional
DESCRIPTION
Digital Positive Supply.
System Clock Input
Audio Data Bit Clock Input.
DAC Sample Rate Clock Input
Channel 0 Serial Audio Data Input.
Channel 1 Serial Audio Data Input.
Channel 2 Serial Audio Data Input.
Control Method Selection Pin.
Low = Software Mode
High = Hardware Control Mode
Mute Control Pin in PCM Mode.
Input
Output (Automute Enabled)
Low: Not Mute
Low: Mute Off
High: Mute
High: Mute On (Zero Flag)
Digital input
Internal pull-down
Supply
Digital input
Internal pull-up
Z: Automute
2nd LRCIN for use in mixed 192kHz/96kHz operation (bit 2SPD = ‘hi’)
Digital GND
Software mode: 3-Wire Serial Control Latch
Hardware Mode: Input Format Selection:
13
MC/IWL
Digital input
Software Mode: 3-Wire Serial Control Clock Input
Internal pull-up Hardware mode: Input Word Length Selection:
14
MD/DM
Digital input
Software mode: 3-Wire Serial Control Data Input
Hardware mode: De-emphasis selection
15
AVDD2
Supply
Analogue Positive DAC Reference
16
CAP
Analogue output Analogue Internal Mid-Rail Reference De-Coupling Point
17
OUT2L
Analogue output Left Channel 2 Output.
18
GR2
Analogue input Channel 2 Negative Reference.
19
OUT2R
Analogue output Right Channel 2 Output.
20
AGND1
Supply
Analogue GND
21
OUT1L
Analogue output Left Channel 1 Output.
22
GR1
Analogue input Channel 1 Negative Reference.
23
OUT1R
Analogue output Right Channel 1 Output.
24
AGND2
Supply
Analogue GND
25
OUT0L
Analogue output Left Channel 0 Output.
26
GR0
Analogue input Channel 0 Negative Reference.
27
OUT0R
Analogue output Right Channel 0 Output.
28
AVDD1
Supply
Analogue VDD
Note:
1. Digital input pins have Schmitt trigger input buffers
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March 2006, PD Rev 4.0
4
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