Bose Companion 5 Service Manual page 53

Companion 5 Audio Path
Signal Routing and Clocking
USB Audio Input
Audio information from the Personal Computer can contain anywhere from two to six channels of information.
This data is transferred from the USB controller to the DSP on the TDM data line connected to U6000.38
(unnamed on the schematic).
Slot Assignments for data from the USB Controller to the DSP are:
DSP audio output
Audio information is transmitted to the CODEC from the DSP on TDM data line DA_DATA1 (U7000.134).
Slot assignments for Audio data from the DSP to the Codec are:
Time Slot
1
2
3
4
5
6
7
8
Audio Path (continued)
U6000
TAS1020
Controller
USB
TDMA in
TDMA out
U7000
TM320DA705
DSP
Time Slot Audio Data
1 Left
2 Right
3 Center
4 LFE
5 Left Surround
6 Right Surround
7 Not Used
8 Not Used
Audio Data
Left Channel (Inner)
Right Channel (Inner)
Left Surround (Outer)
Right Surround (Outer)
Bass
Bass
Don't Care
Don't Care
U4000
AK4626A
CODEC
ADC
AUX IN
BASS1/BASS2
DAC
LS/RS
X3
LC/RC
ANALOG STEREO
USB
TDMA, 8 slot: U6000 Provides Clock, Frame Sync
Muted
Left Headphone
Right Headphone
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
Don't Care
20
TO
POWER
AMP
U9100
NJM3414A
BUFFER
HEADPHONE
OUTPUT