Audio
Table 11. Audio specifications
Feature Specifications
Controller
Dialog DA7219
Stereo conversion
Supported
Type
High Definition Audio
Speakers
2
Internal Interface
I2S
External Interface Digital microphone input on camera module
Headset combo jack (stereo headphones/microphone-in)
Internal speaker amplifier
Supported
External Speaker Amp
MAX98357A
External volume controls
Supported
Speaker output:
● Average - 2 W
● Peak - 2.5 W
Subwoofer output
Not supported
Microphone
Supported
Storage
Table 12. Storage specifications
Type Capacity MMC Interface Voltage
eMMC 16 GB eMMC V5.1 3.3 V
eMMC 32 GB eMMC V5.1 3.3 V
Keyboard
Table 13. Keyboard specifications
Feature Specifications
Number of keys
● 74 (U.S. and Canada)
● 75 (UK)
● 76 (Brazil)
● 78 (Japan)
Size Full sized
● X = 19.05 mm key pitch
● Y = 18.05 mm key pitch
Backlit keyboard No
Technical specifications 15