Specifications

Remote Control and Receiver-Transceiver Specifications and Requirements
for Windows Media Center in Windows Operating Systems
95
Offset
Name
Value
Description
1
CMD_GETIRNUMPORT
S
0x16
Command ID - get the number of
ports
Description
This command queries the device for the number transmit and receive ports that it has.
Response
Description
RSP_EQIRNUMPORTS
Returns the number of ports.
CMD_GETWAKESOURCE – Get Wake Source
Message ID: CMD_GETWAKESOURCE
Message length: 2 bytes
Message direction: Host to device
Offset
Name
Value
Description
0
CMD_PORT_SYS
0xFF
System command
1
CMD_GETWAKESOUR
CE
0x17
Command ID - get wake source
Description
Requests the source of a device wake. For example, the wake might be due to the Sleep button
being pressed.
This command lets host know whether the user is present. If the user presses the Sleep button
and this causes the USB device to wake the system, then the firmware needs to internally store a
Boolean value that specifies the Sleep button as the source. When the CMD_GETWAKESOUCE
command is received from the host, the firmware returns the value of that Boolean and resets it
to false.
Response
Description
RSP_GETWAKESOURCE
Returns true if the Sleep button woke the
system.
CMD_GETEMVER – Get the Interface Version Used by the
Emulator
Message ID: CMD_GETEMVER
Message length: 2 bytes
Message direction: Host to device