WM8778-EV1M
w
Rev 1.1, February 2004
19
DAC SETUP
By pressing the ‘DAC Setup’ button, the software writes to the device setting the SPDIF_IN
through DAC to the VOUTL/R outputs; active in 24-bit, I
2
S input data format. Table 12 lists
the required board settings to allow this signal path to become active. This is to ease the
initial use of the WM8778 hardware and software until the user becomes familiar with both
device and software operation.
P
A
RA
LLE
L
P
O
RT
1
2
3
4
5
6
OPE
N
AGND
AVDD
+2.7V
to
+5.5V
DGND
DVDD
+2.7V
to
+3.6V
VO
U
T
L
VO
U
T
R
OPT
_IN
SPDIF_
IN
SPDIF_
OUT
H1
J2
SW1
SW2
J1
J5
H3
J11
1
J9
1
1
J4
J3
H2
J8
1
J12
1
J14
1
J16
1
H4
SW3
+5v
0
1
J22
J23
+12v
-12v
AINL
AINR
UNFILT_
VOUTL
UNFILT_
VOUTR
1
1
SW5
1
SW6
J17
1
1
1
1
SW7
1
LNK3
LNK5
LNK6
LNK7 LNK4
SW4
1
1
Figure 10 Recommended DAC setup
Summary of Contents for WM8778-EV1B
Page 1: ...WM8778 EV1B Evaluation Board User Handbook Rev 1 1...
Page 25: ...WM8778 EV1M w Rev 1 1 February 2004 25 SCHEMATIC LAYOUT Figure 13 Functional Diagram...
Page 26: ...WM8778 EV1M w Rev 1 1 February 2004 26 Figure 14 Digital Input...
Page 27: ...WM8778 EV1M w Rev 1 1 February 2004 27 Figure 15 Software Control...
Page 28: ...WM8778 EV1M w Rev 1 1 February 2004 28 Figure 16 Level Shift...
Page 29: ...WM8778 EV1M w Rev 1 1 February 2004 29 Figure 17 Analogue Input and Output Mute...
Page 30: ...WM8778 EV1M w Rev 1 1 February 2004 30 Figure 18 WM8778...
Page 31: ...WM8778 EV1M w Rev 1 1 February 2004 31 Figure 19 Analogue Output...
Page 32: ...WM8778 EV1M w Rev 1 1 February 2004 32 Figure 20 Power...
Page 33: ...WM8778 EV1M w Rev 1 1 February 2004 33 WM8778 EV1B PCB LAYOUT Figure 21 Top Layer Silkscreen...
Page 34: ...WM8778 EV1M w Rev 1 1 February 2004 34 Figure 22 Top Layer...
Page 35: ...WM8778 EV1M w Rev 1 1 February 2004 35 Figure 23 Bottom Layer...
Page 36: ...WM8778 EV1M w Rev 1 1 February 2004 36 Figure 24 Bottom Layer Silkscreen...
