WM8778-EV1M
w
Rev 1.1, February 2004
9
HARDWARE CONTROL
To operate the WM8778 in hardware mode, the switch SW7 (MODE) must be set to position
2 and link LNK7 must be set to short pins 2 and 3. The 3-pin links on the board (LNK4, LNK5
and LNK6) then become the active source for changing the device functions. The diagram
shown in Figure 2 used with the settings specified in Table 10 will assist in setting the
WM8778-EV1B into a hardware configuration for DAC (slave mode) playback. This is to ease
the initial use of the WM8778 until the user becomes familiar with the device operation. For
ADC or bypass configuration please refer to the ADC and line setup sections.
PA
R
A
L
L
EL
P
O
R
T
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
1
SW7
1
LNK3
LNK5
LNK6
LNK7 LNK4
SW4
1
Figure 2 Recommended DAC Setup – Hardware Mode
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...
