參數(shù)資料
型號(hào)： HT82A851R
廠商： Holtek Semiconductor Inc.
英文描述： USB Audio MCU
中文描述： USB音頻控制器
文件頁(yè)數(shù)： 1/43頁(yè)
文件大?。?/td> 304K
代理商： HT82A851R
HT82A851R
USB Audio MCU
Rev. 1.20
1
June 15, 2007
General Description
The HT82A851R is an 8-bit high performance RISC-like
microcontroller designed for wireless USB Phone prod-
uct applications. The HT82A851R combines a SPI,
USB transceiver, SIE (Serial Interface Engine), audio
class processing unit, FIFO and an 8-bit MCU into a sin-
gle chip. The play frequency in the HT82A851R oper-
ates at a sampling rate of 48/8kHz. HT82A851R has a
digital programmable gain amplifier. The gain range is
from 32dBto+6dB.FortheIsochronousinput,thedigi-
tal gain range is from 0dB to 19.5dB.
Features
Operating voltage: f
SYS
= 6M/12MHz: 3.3V~5.5V
16 bidirectional I/O lines (max.)
Two 16-bit programmable timer/event counters and
overflow interrupts
4096 15 program memory ROM
384 8 data memory RAM (Bank0,1)
USB 2.0 full speed compatible
USB spec V1.1 full speed operation and USB audio
device class spec V1.0
Built-in digital PGA (Programmable Gain Amplifier)
48kHz/8kHz sampling rate for audio playback
controlled by software option
8kHz audio recording sampling rate
Supports audio playback digital volume control
5 endpoints supported (endpoint 0 included)
Supports 1 Control, 2 Interrupt, 2 Isochronous
transfer
Two hardware implemented Isochronous transfers
Total FIFO size: 464 bytes
(8, 8, 384, 32, 32 for EP0~EP4)
Programmable frequency divider (PFD)
Integrated SPI hardware circuit
Play/Record Interrupt
HALT and wake-up features reduce power
consumption
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)
24-pin SSOP package
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