目录

第21章

IIS总线接口

（续）

概观.............................................................................................................................................21-1

框图....................................................................................................................................21-2

实用Descriptions........................................................................................................................21-2

发送或仅接收模式....................................................................................................21-2

DMA传输..............................................................................................................................21-3

发送和接收Mode..........................................................................................................21-3

音频串行接口Format................................................................................................................21-3

IIS总线格式............................................................................................................................21-3

MSB （左）有道理.....................................................................................................................21-3

采样频率和主时钟............................................. ............................................ 21-4

IIS总线接口特殊寄存器.......................................................................................................21-5

IIS控制（ IISCON ） Register........................................................................................................21-5

IIS模式寄存器（ IISMOD ） Register.............................................................................................21-6

IIS预分频器（ IISPSR ） Register.....................................................................................................21-7

IIS FIFO控制（ IISFCON ） Register..............................................................................................21-8

IIS FIFO （ IISFIFO ） Register...........................................................................................................21-8

第22章

SPI

概观.............................................................................................................................................22-1

产品特点.....................................................................................................................................22-1

框图............................................................................................................................22-2

SPI操作.....................................................................................................................................22-3

程序设计Procedure...............................................................................................................22-3

SPI传输Format.....................................................................................................................22-4

发射程序DMA ...................................................................................................22-5

接收程序DMA .......................................................................................................22-5

SPI特殊寄存器..........................................................................................................................22-6

SPI控制寄存器....................................................................................................................22-6

SPI状态Register.....................................................................................................................22-7

SPI引脚控制寄存器..............................................................................................................22-8

SPI波特率预分频寄存器............................................. .................................................. .22-9

SPI发送数据寄存器...................................................................................................................22-9

SPI接收数据Register...................................................................................................................22-9

十八

S3C2440A微控制器