整理_2

• BT/WWAN---DUAL UART

WWAN: FF-UART (2.5G / 802.20 )---GPRS、GSM : The FFUART supports modem- control capability. The maximum baud rate is 921,600 bps.

BT: BT UART---Handset、Handfree : The BTUART is a high-speed UART that supports baud rates up to 921,600 bps and can beconnected to a Bluetooth module. It supports only two modem control pins (nCTS and nRTS).





STD UART : The STUART supports all functions, but does not support modem-control capability. The maximum baud rate is 921,600 bps.





Features:


The UARTs share the following features:


• Functionally compatible with the 16550A and 16750


• Ability to add or delete standard asynchronous communication bits (start, stop, and parity) inthe serial data


• Independently controlled transmit, receive, line status, and data-set interrupts


• Programmable baud-rate generator that allows the internal clock to be divided by 1 to (216 – 1)to generate an internal 16X clock


• Modem control functions (nCTS, nRTS, nDSR, nDTR, nRI, and nDCD)


• Auto-flow capability controls data I/O without generating interrupts:— nRTS (output) controlled by UART receive FIFO— nCTS (input) from modem controls UART transmitter


• Fully programmable serial interface:— 5-, 6-, 7-, or 8-bit characters— Even, odd, and no-parity detection— 1, 1½, or 2 stop-bit generation— Baud-rate generation up to 921 kbps for all UARTs— False start-bit detection


• 64-byte transmit FIFO


• Complete status-reporting capability


• Ability to generate and detect line breaks


• Internal diagnostic capabilities that include:


— Loopback controls for communications-link fault isolation


— Break, parity, and framing-error simulation


• Fully prioritized interrupt system controls


• Separate DMA requests for transmit and receive data services


• Slow infrared asynchronous interface that conforms to the Infrared Data Association (IrDA)specificationAudio CODEC





WM9714: AC97

The AC-link is a synchronous, fixed-rate serial bus interface to thedigital AC ’97 controller for transferring digital audio, modem, microphone input (MIC-in), Codecregister control, and status information.

The AC ’97 controller and the I2S controller cannot be used at the same time.