Figure 11: USB AIM State Indicators
Table 20: USB AIM States
Green
LED
State
Red
LED
State
USB AIM
Device
State
USB AIM Device State Description
On Off Online The USB AIM is operational. The USB interface is up and work-
ing.
Flash-
ing
Off Link
Down
The USB AIM is operational but the USB interface is not active.
External Phone Interface is active.
Possible Issues:
The USB cable is unplugged.
The host computer is down.
See:
Troubleshooting USB Audio Interface Module USB Commu-
nication Issues on page 117
On Flash-
ing
Impaired The USB AIM can be operational but requires servicing. The
state of the USB interface is unknown. Codecs initialized.
Possible Issues:
An alternate Field-Programmable Gate Array (FPGA) image
is present but it is corrupt and failed to boot.
The EE Non-Volatile Memory (NVM) checksum failure occur-
red.
There is a mismatch between the FPGA version and the
NVM version.
See:
Upgrading the USB Audio Interface Module Software on
page 113
Off On Failure Hardware or firmware failure.
Possible Issues:
The host computer is in the sleeping mode.
Power-On Self-Test (POST) failed.
Codecs failed to initialize.
I2C failed.
See:
Troubleshooting USB Audio Interface Module USB Commu-
nication Issues on page 117
Upgrading the USB Audio Interface Module Software on
page 113
Table continued…
MN000672A01-E
Chapter 4: USB Audio Interface Module
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