HT82A822R
USB Audio MCU
Features
·
USB 2.0 full speed compatible
·
USB spec v1.1 full speed operation and USB audio
·
192´8 MCU type data memory RAM (Bank0)
·
128´8´4 Speaker Out Data RAM (Bank1, Bank2,
device class spec v1.0
·
Operating voltage: f
SYS
= 6MHz/12MHz: 3.3V~5.5V
·
Low voltage reset function (3.0V±0.3V)
·
High-performance 48kHz sampling rate for audio
Bank3, Bank4)
·
128´8´4 MCU Type General Purpose Data RAM
(Bank5, Bank6, Bank7, Bank8)
·
HALT function and wake-up feature reduce power
playback
·
Embedded class AB power amplifier for speaker
consumption
·
24 bidirectional I/O lines (max.)
·
Two 16-bit programmable timer/event counter and
driving
·
Embedded High Performance 16 bit audio DAC
·
Support digital volume control
·
HID support which can remote control of playback
overflow interrupts
·
Watchdog Timer
·
16-level subroutine nesting
·
Bit manipulation instruction
·
15-bit table read instruction
·
63 powerful instructions
·
All instructions in one or two machine cycles
·
48-pin SSOP package
volume/mute
·
3 endpoints supported (endpoint 0 included)
·
Support 1 Control , 1 Interrupt , 1 Isochronous
transfer
·
Total FIFO size are 400 byte (8, 8, 384 for EP0~EP2)
·
4096´15 program memory ROM
General Description
This HT82A822R is an 8-bit high performance
RISC-like microcontroller designed for USB Speaker
product applications. The HT82A822R combines a
16-bit DAC, USB transceiver, SIE (Serial Interface En-
gine), audio class processing unit, FIFO, 8-bit MCU into
a single chip. The DAC in the HT82A822R is operating
at the 48kHz sampling rate. The HT82A822R has a digi-
tal programmable gain amplifier. The gain range is from
-32dB
to +6dB.
The HT82A822R has a Human Interface Device func-
tion that allows a user to control the playback volume at
the device side. The HT82A822R also can mute the an-
alog output signal by the operation of HID buttons.
Rev. 1.10
1
June 29, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
