WM8523GEFL/RV Wolfson Microelectronics, WM8523GEFL/RV Datasheet - Page 28

• Manufacturer Part Number: WM8523GEFL/RV
• Description: IC, DAC, STEREO, 2VRMS, 2CH, 24QFN
• Manufacturer: Wolfson Microelectronics

Specifications of WM8523GEFL/RV

• Resolution (bits): 24bit
• Sampling Rate: 192kSPS
• Input Channel Type: Serial
• Digital Ic Case Style: QFN
• No. Of Pins: 24
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Package: RoHS Compliant
• Data Interface: I2C, Serial, SPI
• Supply Voltage Range - Analogue: 2.97V To 3.63V
• Rohs Compliant: Yes

WM8523
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Figure 23 SYS_ENA[1:0] Power Up and Down Sequences
DIGITAL VOLUME CONTROL
The WM8523 DAC includes digital volume control, allowing the digital gain to be adjusted between
−100dB and +12dB in 0.25dB steps. Volume update bits allow the user to write both left and right
channel volume changes before the volume is updated.
mode.
Table 13 DAC Digital Volume Control
DAC_GAINR
DAC_GAINR
DAC_GAINL
DAC_GAINL
REGISTER
ADDRESS
06h
07h
06h
07h
R6
R7
R6
R7
BIT
8:0
8:0
9
9
DACR_VU
_VOL[8:0]
_VOL[8:0]
DACL_VU
LABEL
DACR
DACL
110001000
DEFAULT
0
0
DAC Digital Volume
0 0000 0000 = −100dB
0 0000 0001 = −99.75dB
0 0000 0010 = −99.5dB
…0.25dB steps
1 1001 0000 = 0dB
…0.25dB steps
1 1011 1110 = +11.75dB
1 11XX XXXX = +12dB
DAC Digital Volume Update
0 = Latch DAC volume setting into
Register Map but do not update volume
1 = Latch DAC volume setting into
Register Map and update left and right
channels simultaneously
Digital volume control is only available in I
DESCRIPTION
PP, Rev 3.0, July 2009
Pre-Production
28
2
C