先进的I / O控制器,主板胶合逻辑
数据表
7.3
7.4
并口....................................................................................................................................... 95
IBM XT / AT兼容,双向和EPP模式...................................... ............................. 96
7.4.1
7.4.2
7.4.3
7.4.4
7.4.5
7.4.6
7.4.7
7.4.8
数据端口...........................................................................................................................................96
状态Port..............................................................................................................................................97
控制端口...................................................................................................................................97
EPP地址端口...........................................................................................................................98
EPP数据端口0 ................................................................................................................................98
EPP数据端口1 ................................................................................................................................99
EPP数据端口2 ................................................................................................................................99
EPP数据端口3 ................................................................................................................................99
软件约束..............................................................................................................................99
7.5
7.6
7.7
7.8
EPP 1.9操作............................................................................................................................ 99
7.5.1
EPP 1.9写.................................................................................................................................. 100
EPP 1.9 Read.................................................................................................................................. 100
EPP 1.7操作.......................................................................................................................... 101
7.8.1
软件约束............................................................................................................................101
7.9 EPP 1.7写.................................................................................................................................. 101
7.10
EPP 1.7阅读.............................................................................................................................. 101
7.10.1
7.10.2
扩展功能并行端口...................................................................................................102
词汇........................................................................................................................................102
描述........................................................................................................................................103
DATA和ecpAFifo PORT ...............................................................................................................105
设备状态寄存器( DSR ) ..................................................................................................106
设备控制寄存器(dcr)...............................................................................................106
CFIFO (并口数据FIFO).......................................................................................................107
ECPDFIFO ( ECP数据FIFO)............................................................................................................107
tFifo ( FIFO测试Mode)......................................................................................................................107
cnfgA (配置寄存器A).......................................................................................................108
cnfgB (配置寄存器B).......................................................................................................108
ECR (扩展控制Register)........................................................................................................108
模式切换/控制软件.....................................................................................................110
7.11
7.12
ECP执行标准....................................................................................................103
寄存器定义...................................................................................................................... 104
7.11.1
7.12.1
7.12.2
7.12.3
7.12.4
7.12.5
7.12.6
7.12.7
7.12.8
7.12.9
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.20
7.21
手术..................................................................................................................................... 110
ECP操作............................................................................................................................. 110
从ECP模式终结....................................................................................................... 111
命令/数据............................................................................................................................ 111
数据压缩....................................................................................................................... 111
针脚定义................................................................................................................................ 112
LPC连接......................................................................................................................... 112
中断...................................................................................................................................... 112
FIFO操作............................................................................................................................ 112
DMA传输...........................................................................................................................113
DMA模式 - 转会从FIFO到主机........................................ .................................... 113
可编程I / O模式或非DMA模式........................................ ............................................... 113
可编程I / O - 转会从FIFO到主机...................................... .............................. 114
可编程I / O - 从主机传输到FIFO ...................................... .............................. 114
7.13.1
7.21.1
7.21.2
7.21.3
7.21.4
7.21.5
7.22
7.23
电源管理..................................................................................................................... 114
串行IRQ..................................................................................................................................... 114
时序图SER_IRQ周期............................................. ................................................. 115
SER_IRQ周期Control....................................................................................................................115
SER_IRQ数据帧......................................................................................................................116
停止循环控制............................................................................................................................117
潜伏.............................................................................................................................................117
EOI / ISR读Latency......................................................................................................................117
AC / DC规格问题................................................................................................................117
复位和初始化......................................................................................................................117
7.23.1
7.23.2
7.23.3
7.23.4
7.23.5
7.23.6
7.23.7
7.23.8
7.24
产生中断Registers..................................................................................................... 117
5
修订版1.8
SMSC /非SMSC的寄存器组
(02-24-05)
SMSC LPC47M182
数据表