WM8756 データシートの表示（PDF） - Wolfson Microelectronics plc
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WM8756 Datasheet PDF : 39 Pages
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WM8756
Advance Information
PIN DESCRIPTION
PIN
NAME
TYPE
DESCRIPTION
1
DIN1
Digital input
Channel 1 Serial Audio Data Input in PCM Mode.
2
DIN2
Digital input
Channel 2 Serial Audio Data Input in PCM Mode.
3
DSD0
Digital input p.d. Channel 0 Left DSD format audio data input
4
DSD1
Digital input p.d. Channel 0 Right DSD format audio data input
5
DSD2
Digital input p.d. Channel 1 Left DSD format audio data input
6
DSD3
Digital input p.d. Channel 1 Right DSD format audio data input
7
DSD4
Digital input p.d. Channel 2 Left DSD format audio data input
8
DSD5
Digital input p.d. Channel 2 Right DSD format audio data input
9
DSDCLK64
Digital In/Out DSD format data clock at 64fs
10
DSDCLK128
Digital In/Out DSD format data clock at 128fs (used in ‘modulated data’ mode)
11
MODE
Digital input
Control Method Selection Pin in PCM Mode. ‘lo’ = software mode
12
MUTE
Digital In/Out Mute Control Pin in PCM Mode. ‘lo’ = not muted
13
LRCIN2
Digital input p.d. Second LRCIN input for dual rate mode
14
DSDB
Digital input p.u. DSD or PCM audio data format select; ‘lo’ = DSD mode, ‘hi’ = PCM mode
15
DGND
Supply
Digital GND
16
ML/I2S
Digital input p.u. Software mode: in 3-Wire Serial Control mode, Latch input.
Hardware Mode: Input Format Selection:
17
MC/IWL
Digital input p.u. Software Mode: In 3-Wire Serial Control Mode, Clock Input.
Hardware mode: Input Word Length Selection:
18
MD/DM
Digital input
Software mode: In 3-Wire Serial Control Mode, Data Input.
Hardware mode: De-emphasis selection
19
CSB
Digital input p.d. 3-wire Serial Port Chip select – active low
20
n.c.
n.c.
No internal connection
21
AVDD2
Supply
Analogue Positive DAC Reference
22
n.c.
n.c.
No internal connection
23
CAP
Analogue output Analogue Internal Mid-Rail Reference De-Coupling Point
24
n.c.
n.c.
No internal connection
25
OUT2L
Analogue output Left Channel 2 Output.
26
GR2
Analogue input Channel 2 Negative Reference.
27
OUT2R
Analogue output Right Channel 2 Output.
28
AGND1
Supply
Analogue GND
29
AGND2
Supply
Analogue GND
30
OUT1L
Analogue output Left Channel 1 Output.
31
GR1
Analogue input Channel 1 Negative Reference.
32
OUT1R
Analogue output Right Channel 1 Output.
33
AGND3
Supply
Analogue GND
34
OUT0L
Analogue output Left Channel 0 Output.
35
GR0
Analogue input Channel 0 Negative Reference.
36
OUT0R
Analogue output Right Channel 0 Output.
37-39
nc
nc
No internal connection
40
AVDD1
Supply
Analogue positive supply
41
nc
nc
No internal connection
42
DMSLV
Digital input p.d. DSD mode master or slave operation select; ‘lo’ = SLAVE (clocks are input)
43
DMCKSEL
Digital input p.d. DSD Master Mode Clock Select (lo for 256fs; hi for 384fs)
44
DVDD
Supply
Digital Positive Supply.
45
SCKI
Digital input
Master Clock Input
46
BCKIN
Digital input
Audio Data Bit Clock Input.
47
LRCIN
Digital input
DAC Sample Rate Clock Input in PCM Mode
48
DIN0
Digital input
Channel 0 Serial Audio Data Input in PCM Mode.
Note - Digital input pins have Schmitt trigger input buffers. Pins marked ‘p.u.’ or ‘p.d.’ have internal pull-up or pull down.
AI Rev 1.3 October 2001
3
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