參數(shù)資料
型號： MC72000
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： Integrated Bluetooth Radio
中文描述： 集成藍(lán)牙無線
文件頁數(shù)： 63/156頁
文件大?。?/td> 1782K
代理商： MC72000
MOTOROLA
MC72000
Advance Information Data Sheet
Go to: www.freescale.com
63
Figure 34. Flow Control
7.3 Configurable Serial Peripheral Interface (CSPI)
The CSPI is a master/slave configurable serial peripheral interface module which allows full-duplex,
synchronous, serial communications with other peripheral devices. The CSPI is equipped with an 8 x 16
RXFIFO and an 8 x 16 TXFIFO. The CSPI incorporates the DATAREADY_B and SS_B control signals
and enables fast data communication with a fewer number of software interrupts.
7.3.1 Features
The CSPI has the following features:
Full-duplex operation
Master and slave modes
Separate 8 x 16 transmit and receive FIFO registers
Eight master mode frequencies
— Maximum frequency = bus frequency
÷
4
— Minimum frequency = bus frequency
÷ 512
Slave mode frequencies
— Maximum frequency = less than bus frequency
÷
4
— Minimum frequency = 0
Selectable transmit and receive word lengths from 1 to 16 bits
Serial clock with programmable polarity and phase
Interrupts
— Receiver full (programmable level)
— Transmitter empty (programmable level)
— Overflow error, RXFIFO, and bit count
7.3.2 Modes of Operation
Master mode
MC71000
RTS
TXD
CTS
RXD
NOTE:
Remote
CTS
RXD
RTS
TXD
Please stop
TX
Please stop
I’m full
OK to TX
I’m ready for more data
The above signals assume control (FCe) = 0 (enabled and control) and
(FCp) = 0 (active low RTS/CTS signals).
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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