The Google TV developers released a GoogleTV add-on for the Android SDK that makes emulation possible on the Windows and Mac Operating Systems (Linux was already supported).
Assuming that you have the Android SDK already installed:
In order to use the emulator, you need to open the Android SDK Manager and make sure that you have the “Google TV Addon” [under Android 3.2 (API 13)] and the “Intel Atom x86 System Image” [under Android 2.3.3 (API 10)].
If you installed the “Intel Atom x86 System Image”, you need to install the “Intel Hardware Accelerated Execution Manager” which can be found in the <sdk>/extras/intel/Hardware_Accelerated_Execution_Manager/
For Windows, install the IntelHAXM.exe file.
For Mac, install the IntelHAXM.dmg file.
You can read the installation instructions here http://developer.android.com/tools/devices/emulator.html
Create a new “Device Definition” in the “Android Virtual Device Manager” using the configuration below.
For 1080p use a resolution of 1920×1080 and a density of xhdpi.
For 720p use a resolution of 1080×720 with a density of tvdpi.
Then create a “Android Virtual Device” using the “Device Definition” that you just configured.