Specifications

AirPrime Embedded Module Hardware Integration Guide
58 Proprietary and Confidential 2130114
Host USB driver requirements
The USB driver on the host device must meet these critical requirements:
• The host USB driver must support remote wakeup, resume, and suspend
operations as described in Universal Serial Bus Specification, Rev 2.0.
• The host USB driver must support serial port emulation. The module imple-
ments both 27.010 multiplexing and USB-CDC.
• When the host doesn’t have any valid data to send, the host USB driver
should NOT send any SOF tokens (start-of-frames) to the module. These
tokens keep the module awake and cause unnecessary power consumption.
LED output
The module drives the LED output according to the PCI-Express Mini Card
specification (summarized in Table 5- 3).
Figure 5-1: Example LED
Table 5-3: LED states
State Indicates Characteristics
Off Module is not powered. Light is off.
On Module is powered and connected, but
not transmitting or receiving.
Light is on.
Slow blink Module is powered and searching for
a connection.
LED is flashing at a steady, slow rate.
• 250 ms ± 25% ON period
• 0.2 Hz ± 25% blink rate
Faster blink Module is transmitting or receiving. LED is flashing at a steady, faster rate.
• Approximately 3 Hz blink rate
Note: MC572x modules support
customer-defined LED controls.
Current limiting Resistor
LED
VCC 3.3V
(VCC 3.8V (MC8201))
MIO
MiniCard