12048321 Rev. 01 (Draft)
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6.3. USB2.0 (Port 1B) Sharing
The
USB2.0 Port 1B
of the on board USB2.0 Hub is shared by following features:
-
USB2.0 Upper port of the
J22
- Dual USB 2.0 Type-A connector at the I/O shield
-
USB2.0 (Port 0) of the internal Pin-header
J21
Note: It is not possible to use both features at the same time.
USB2.0 Port 1B Switch Modification Instruction
To switch USB2.0 Port 1B to J21or J22 connector see the
“USB2.0-P1B Shared Components Modification
Table
”
below. Use
“D001_AssemblyDrawing_eDM-CB-SM-IPCS.pdf”
to locate components on the PCB.
RefDes
USB2.0 Pinheader
J21 (Port 0)
USB2.0 Type-A
J22 (Upper Port)
Component Parameters
R231
Add
Remove
0 Ohm resistor / 0201 package
R232
Add
Remove
0 Ohm resistor / 0201 package
R233
Remove
Add
0 Ohm resistor / 0201 package
R234
Remove
Add
0 Ohm resistor / 0201 package
6.4. Audio (Line Out) J37 Shared Sources
The Audio line out of the J37 connector at the IO-Shield can be shared between following sources:
-
Line Out of the I2S Audio Codec WM8904
-
Front Line Out of the HD-Audio Codec ALC888S
Note: It is not possible to use both sources at the same time.
Audio line out Switch Modification Instruction
To switch Audio line out of the J37 between I2S or HD-Audio Codec see the
“Line-Out J37 Shared Components
Modification Table”
below. Use
“D001_AssemblyDrawing_eDM-CB-SM-IPCS.pdf”
to locate components on the
PCB.
RefDes
I2S Codec
HD-Audio Codec
Component Parameters
C320
Add
Remove
4.7uF capacitor MLCC / X5R / 0402 package
C321
Add
Remove
4.7uF capacitor MLCC / X5R / 0402 package
R490
Add
Remove
0 Ohm resistor / 0201 package
R491
Add
Remove
0 Ohm resistor / 0201 package
R506
Remove
Add
75 Ohm resistor / 0402 package
R507
Remove
Add
75 Ohm resistor / 0402 package
R492
Remove
Add
0 Ohm resistor / 0201 package
R495
Remove
Add
22.1 kOhm resistor / 0201 package
R496
Remove
Add
22.1 kOhm resistor / 0201 package
R493
Remove
Add
0 Ohm resistor / 0603 package
