Wolfson WM8778-EV1B, User Handbook Manual

Page: 38 / 48

WM8778-EV1M
w Rev 1.1, February 2004
38
DESCRIPTION REFERENCE DESIGNATOR QTY
620R 0805 SMD chip resistor 1% 0.1W R7 1
49R9 0805 SMD chip resistor 1% 0.125W R74,R78 2
100K 0805 SMD chip resistor 1% 0.1W R8, R14, R25 3
3K 0805 SMD chip resistor 1% 0.1W R82 1
1K 0805 SMD chip resistor 1% 0.1W R83 1
75R 0805 SMD chip resistor 1% 0.125W R9 1
Slotted Panhead Screw - M3 thread; 12mm long SC1, SC2, SC3, SC4, SC6 5
Hexagonal brass M3 size spacer 20mm length SPR1, SPR2, SPR3, SPR4, SPR6 5
DIL Switch 6-Way Rocker SW1 1
B3F1000 SPNO PCB mount switch SW2 1
DP2P PCB mount vertical slide switch SW3, SW4, SW7 3
1.32mm PCB Test Terminal BLACK TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP11,
TP13 10
1.32mm PCB Test Terminal RED TP9, TP10, TP12 3
2:1 Ratio 96KHz SPDIF Digital Audio transformer SOIC U1 1
DS1813 5V active Low Power-On-Reset chip SOT U2 1
TORX176 Digirtal Audio Optical Receiver U3 1
CS8427 96KHz Audio Transceiver U4 1
74ALVC164245 16 Bit Dual Supply Bus Transceiver SSO U5, U8 2
MC33078 Low Noise Dual Op-Amp SO U6, U10 2
WM8778 24-bit 192kHz Stereo Codec U7 1
74HCT157 Quad 2-Input Mux SO U9 1
Plain M3 size washer WSH1, WSH2, WSH3, WSH4, WSH6 5
Table 15 WM8778-EV1M Bill of Materials
Note:
1
The audio transformer used on this board is manufactured by Scientific Conversion
Inc. ( www.scientificonversion.com) .