參數(shù)資料
型號(hào)： WM8768
廠商： Wolfson Microelectronics
英文描述： 24-bit, 192kHz 8-Channel DAC
中文描述： 24位，192kHz的8通道DAC
文件頁(yè)數(shù)： 26/38頁(yè)
文件大?。?/td> 393K
代理商： WM8768
WM8768
Production Data
w
PD Rev 4.1 March 2005
26
MUTE PIN AS INPUT
The WM8768 can be muted externally by driving the MUTE pin high. When the MUTE pin is driven
low the device will never automute, although direct mutes can still be applied via the DMUTE or
MUTEALL registers.
The DZFM bits are used to decode the operation of a MUTE pin (decides which channels will be
affected by the logic level present on the MUTE pin). MPD (Mute Pin Decode) is used to enable the
DZFM operation. If MPD is set, the selection made by the DZFM bits will be ignored and all channels
will be muted when the pin is driven high.
Table 11 below describes which channels will be softmuted when the MUTE pin is driven high
depending on the MPD and DZFM bits.
MPD
{DZFM4,DZFM [1:0]}
CHANNELS MUTED WHEN
MUTE PIN HIGH
All Channels
0
000
0
001
CH1
0
010
CH2
0
011
CH3
0
100
CH4
0
101
CH1 and CH2
0
110
CH1, CH2 and CH3
0
1
111
000
CH3 and CH4
All Channels
1
001
All Channels
1
010
All Channels
1
011
All Channels
1
100
All Channels
1
101
All Channels
1
110
All Channels
1
111
All Channels
Table 11 Mute Pin Decode when Mute Pin as Input
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