HT82A836R Datasheet, PDF (1/75 Pages) Holtek Semiconductor Inc – USB Audio MCU

HT82A836R
USB Audio MCU
Technical Document
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· USB 2.0 full speed compatible
· USB spec V1.1 full speed operation and USB audio
device class spec V1.0
· Operating voltage at f_SYS= 6M/12MHz: 3.3V~5.5V
· Low voltage reset function
· Embedded high-performance 16-bit PCM ADC
· Integrated Digital PGA - Programmable Gain Ampli-
fier
· 48kHz/8kHz sampling rate for audio playback se-
lected by software
· 8kHz/16kHz audio recording sampling rate selected
by software
· Embedded class AB power amplifier for speaker driv-
ing
· 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
· _{Two hardware implemented Isochronous transfers}
· _{Total FIFO size: 496 bytes - 8, 8, 384, 64, 32 for}
EP0~EP4
· _{8192´16 Program Memory}
· 352´8 Data Memory in two banks
· 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
· m Law Compander
· Power-down function and wake-up reduce power
consumption
· Up to of 44 bidirectional I/O lines
· Dual 16-bit programmable Timer/Event Counters
with overflow interrupts
· Watchdog Timer
· 16-level subroutine nesting
· Bit manipulation instruction
· 15-bit table read instruction
· 63 powerful instructions
· All instructions executed within one or two machine
cycles
· _{Low voltage reset function (3.0V±0.3V)}
· _{80-pin LQFP (10mm´10mm) package type}
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