SPCA514A 查看數據表（PDF） - Unspecified

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产品描述 (功能)

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SPCA514A

Digital Audio USB Controller

Unspecified 

SPCA514A

Serial ports

The micro-controller does not implement serial port framing error detection and does

not implement slave address comparison for multiprocessor communications.

Timer 2

The micro-controller does not implement timer2 down-counting mode or the down-count

enable bit(T2MOD, bit0). The timer2 overflow output is active for one clock cycle. In the

DS80C320, the timer2 overflow output is a square wave with a 50% duty cycle.

Watchdog timer

The micro-controller does not implement an internal watchdog timer.

Power fail detector

The micro-controller does not implement an internal power fail detector.

Stop mode

The micro-controller internal cycle counter is reset in stop mode. The micro-controller

exits stop mode only when reset.

Timed access protection

The micro-controller does not implement timed access protection.

3.3. USB Pipes

SPCA514A supports the following four USB pipes.

Default pipe (EP0): process the standard and vendor commands.

INTERRUPT-IN pipe (EP1): transmit device events (interface 0)

BULK-IN pipe (EP2): upload data to the PC (interface 0)

BULK-OUT pipe (EP3): download data and ROM code (interface 0)

All standard commands, except the Get Descriptor command, are processed by

hardware. For Get Descriptor command and vendor commands, the USB controller latches

 



  

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