牛津半导体有限公司

OX16C954 REV B

C

ONTENTS

特点.................................................................................................................................................................................................1

REV B ENHANCEMENTS.........................................................................................................................................................................1

DESCRIPTION............................................................................................................................................................................................ 2

CONTENTS.................................................................................................................................................................................................3

1性能比较......................................................................................................................................................5

2 BLOCK DIAGRAM............................................................................................................................................................................... 7

3 PIN信息.............................................................................................................................................................................8

4引脚说明.........................................................................................................................................................................10

4.1

更多引脚信息...........................................................................................................................................................15

5模式选择...........................................................................................................................................................................16

5.1

450模式....................................................................................................................................................................................16

5.2

550模式....................................................................................................................................................................................16

5.3

扩展550模式..................................................................................................................................................................16

5.4

750模式....................................................................................................................................................................................16

5.5

650模式....................................................................................................................................................................................16

5.6

950模式....................................................................................................................................................................................17

6寄存器描述TABLES...............................................................................................................................................18

7 RESET CONFIGURATION................................................................................................................................................................22

7.1

硬件Reset.........................................................................................................................................................................22

7.2

软件复位..........................................................................................................................................................................22

8发送和接收FIFO ........................................................................................................................................23

8.1

FIFO控制寄存器“ FCR ” ...................................................................................................................................................23

9线控& STATUS.............................................................................................................................................................24

9.1

错误的起始位Detection..........................................................................................................................................................24

9.2

线路控制寄存器“ LCR ” ....................................................................................................................................................24

9.3

线状态寄存器“ LSR ” ......................................................................................................................................................25

10个中断&睡眠模式.......................................................................................................................................................26

10.1中断使能寄存器‘IER’...............................................................................................................................................26

10.2中断状态寄存器‘ISR’................................................................................................................................................27

10.3中断描述................................................................................................................................................................27

10.4睡眠Mode.................................................................................................................................................................................28

11 MODEM INTERFACE........................................................................................................................................................................28

11.1调制解调器控制寄存器‘MCR’..............................................................................................................................................28

11.2调制解调器状态寄存器‘MSR’................................................................................................................................................29

12其他标准REGISTERS...................................................................................................................................................30

12.1除数锁存寄存器“ DLL & DLM’....................................................................................................................................30

12.2便签注册‘SPR’.....................................................................................................................................................30

13自动流CONTROL.......................................................................................................................................................31

13.1增强功能注册‘EFR’........................................................................................................................................31

13.2特殊字符检测...................................................................................................................................................32

13.3自动带内流量控制............................................................................................................................................32

13.4自动出带外流量控制....................................................................................................................................32

14波特率GENERATION.............................................................................................................................................................33

14.1一般Operation.....................................................................................................................................................................33

14.2时钟分频寄存器‘CPR’..............................................................................................................................................34

14.3倍时钟寄存器“ TCR ” ....................................................................................................................................................34

14.4输入时钟Options..................................................................................................................................................................36

数据表修订版1.0

第3页