Data Sheet

Copyright © Bridgetek Pte Ltd 4
BT81X (815/6) Advanced Embedded Video Engine Datasheet
Version 1.0
Document No.: BRT_000220 Clearance No.: BRT#126
Table of Contents
1 Typical Applications ....................................................... 2
1.1 Part Numbers ............................................................................. 2
2 Block Diagram ............................................................... 3
3 Device Pin Out and Signal Description ........................... 7
3.1 BT815 VQFN-64 Package Pin Out ............................................... 7
3.2 BT816 VQFN-64 Package Pin Out ............................................... 7
3.3 Pin Description .......................................................................... 8
4 Functional Description ................................................. 12
4.1 Quad SPI Host Interface .......................................................... 12
4.1.1 QSPI Interface .......................................................................................... 12
4.1.2 Serial Data Protocol ................................................................................... 14
4.1.3 Host Memory Read .................................................................................... 14
4.1.4 Host Memory Write.................................................................................... 15
4.1.5 Host Command ......................................................................................... 15
4.1.6 Interrupts ................................................................................................ 19
4.2 System Clock ........................................................................... 20
4.2.1 Clock Source ............................................................................................ 20
4.2.2 Phase Locked Loop .................................................................................... 21
4.2.3 Clock Enable ............................................................................................. 21
4.2.4 Clock Frequency ........................................................................................ 21
4.3 Graphics Engine ....................................................................... 21
4.3.1 Introduction ............................................................................................. 21
4.3.2 ASTC ....................................................................................................... 22
4.3.3 ROM and RAM Fonts .................................................................................. 22
4.4 SPI NOR Flash Interface .......................................................... 26
4.5 Parallel RGB Interface ............................................................. 26
4.6 Miscellaneous Control .............................................................. 29
4.6.1 Backlight Control Pin ................................................................................. 29
4.6.2 DISP Control Pin ....................................................................................... 29
4.6.3 General Purpose IO pins ............................................................................ 29
4.6.4 Pins Drive Current Control .......................................................................... 30
4.7 Audio Engine ............................................................................ 30
4.7.1 Sound Synthesizer .................................................................................... 30
4.7.2 Audio Playback ......................................................................................... 32