HT82A836R
USB Audio MCU
Technical Document
·
Application Note
-
HA0075E MCU Reset and Oscillator Circuits Application Note
Features
·
·
·
·
·
·
·
·
·
·
USB 2.0 full speed compatible
352´8 Data Memory in two banks
USB spec V1.1 full speed operation and USB audio
device class spec V1.0
Programmable frequency divider function
Integrated SPI hardware interface
Port A wake-up on rising or falling transitions
6-channel 12-bit A/D converter
2-channel PWM function
·
·
·
·
Operating voltage at fSYS= 6M/12MHz: 3.3V~5.5V
Low voltage reset function
Embedded high-performance 16-bit PCM ADC
Integrated Digital PGA - Programmable Gain Ampli-
m Law Compander
fier
Power-down function and wake-up reduce power
consumption
·
·
·
48kHz/8kHz sampling rate for audio playback se-
lected by software
·
·
Up to of 44 bidirectional I/O lines
8kHz/16kHz audio recording sampling rate selected
by software
Dual 16-bit programmable Timer/Event Counters
with overflow interrupts
Embedded class AB power amplifier for speaker driv-
ing
·
·
·
·
·
·
Watchdog Timer
16-level subroutine nesting
Bit manipulation instruction
15-bit table read instruction
63 powerful instructions
·
·
·
·
Embedded High Performance 16-bit audio DAC
Audio playback digital volume control
5 endpoints supported including endpoint 0
Supports 1 Control, 2 Interrupts and 2 Isochronous
transfers
All instructions executed within one or two machine
cycles
·
·
Two hardware implemented Isochronous transfers
·
·
Low voltage reset function (3.0V±0.3V)
80-pin LQFP (10mm´10mm) package type
Total FIFO size: 496 bytes - 8, 8, 384, 64, 32 for
EP0~EP4
·
8192´16 Program Memory
General Description
The HT82A836R is an 8-bit high-performance RISC
microcontroller designed for USB phone product appli-
cations. To ensure a high level of functional integration
for USB phone applications, this 8-bit microcontroller in-
cludes important features such as 16-bit PCM A/D Con-
verter, USB transceiver, Serial Interface Engine, audio
class processing unit, m law Compander, 6-channel
12-bit ADC, 2-channel PWM and FIFO.
The DAC in the HT82A836R operates at a sampling
rate of 48kHz/8kHz and the 16-bit PCM ADC operates
at frequency of 8kHz/16kHz for the Microphone input,
with the options selected using software. The integrated
DAC also includes a digitally programmable gain ampli-
fier with a range of -32dB to +6dB. The digital gain
range of the ADC input is from 0dB to 19.5dB.
Rev. 1.10
1
August 5, 2011