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WM8716_08 Datasheet(Hoja de datos) 13 Page - Wolfson Microelectronics plc

No. de Pieza. WM8716_08
Descripción  High Performance 24-bit, 192kHz Stereo DAC
Descarga  26 Pages
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Fabricante  WOLFSON [Wolfson Microelectronics plc]
Página de inicio  http://www.wolfsonmicro.com
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 13 page
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Production Data
WM8716
w
PD, Rev 4.2, August 2008
13
SOFTWARE CONTROL INTERFACE
The WM8716 can be controlled using a 3-wire serial interface. MD/DM0 (pin 26) is used for the
program data, MC/DM1 (pin 22) is used to clock in the program data and ML/I2S (pin 28) is use to
latch in the program data. The 3-wire interface protocol is shown in Figure 6. CSB/IWO (pin 23) must
be low when writing.
ML/I2S (PIN 28)
MC/DM1 (PIN 27)
MD/DM0 (PIN 26)
B15 B14 B13
B2
B1
B0
Figure 6 Three-Wire Serial Interface
REGISTER MAP
WM8716 controls the special functions using 4 program registers, which are 16-bits long. These
registers are all loaded through input pin MD/DM0. After the 16 data bits are clocked in, ML/I2S is
used to latch in the data to the appropriate register. Table 5 shows the complete mapping of the
4 registers. Note that in hardware differential mode and 8X modes, software control is not available.
The hardware differential mode (Diff[1:0]) clock loss detector disable (CDD) can only be accessed by
writing to M2[8:5] with the pattern 1111. Register M4 is then accessible by setting A[2:0] to 110.
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
M0
-
-
-
-
A2 (0) A1(0) A0(0)
LDL
AL7
AL6
AL5
AL4
AL3
AL2
AL1
AL0
M1
-
-
-
-
A2(0) A1(0) A0(1)
LDR
AR7
AR6
AR5
AR4
AR3
AR2
AR1
AR0
M2
-
-
-
-
A2(0) A1(1) A0(0)
-
-
-
-
IW1
IW0
OPE
DEM
MUT
M3
-
-
-
-
A2(0) A1(1) A0(1)
IZD
SF1
SF0
CK0
REV
SR0
ATC
LRP
I2S
M4
-
-
-
-
A2(1) A1(1) A0(0)
-
-
CDD DIFF1 DIFF0
-
-
-
-
Table 5 Mapping of Program Registers




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