规范
4.6.5
4.6.5.1
4.6.5.2
NET2270 USB接口控制器
DMA Performance.................................................................................................................28
DMA Read........................................................................................................................................28
DMA写.......................................................................................................................................28
5
USB功能DESCRIPTION...............................................................................................29
5.1
USB I
覆盖整个院落
.............................................................................................................................29
5.2
USB P
ROTOCOL
.............................................................................................................................29
5.2.1
Tokens....................................................................................................................................29
5.2.2
Packets...................................................................................................................................29
5.2.3
Transaction............................................................................................................................30
5.2.4
转让.................................................................................................................................30
5.3
A
UTOMATIC
R
ETRIES
.....................................................................................................................30
5.3.1
的交易...................................................................................................................30
5.3.2
在交易......................................................................................................................30
5.4
P
ING
F
低
C
ONTROL
.....................................................................................................................30
5.5
P
蒙皮
S
用于表征
.................................................................................................................................30
5.6
USB ê
NDPOINTS
............................................................................................................................31
5.6.1
控制端点 - 端点0 ............................................. ................................................. 31
5.6.1.1
控制写入Transfer......................................................................................................................31
5.6.2
5.6.2.1
5.6.2.2
控制写入传输Details..............................................................................................32
控制阅读Transfer.......................................................................................................................33
控制读取传输详细..........................................................................................................33
5.6.3
5.6.3.1
5.6.3.2
同步端点..........................................................................................................34
同步输出Transactions...........................................................................................................35
同步的交易.............................................................................................................36
5.6.4
5.6.4.1
5.6.4.2
体积Endpoints.......................................................................................................................37
大宗的交易......................................................................................................................37
散装终点.............................................................................................................................38
5.6.5
5.6.5.1
5.6.5.2
中断Endpoints................................................................................................................39
中断的交易................................................................................................................39
中断在端点.......................................................................................................................39
5.7
P
蒙皮
B
UFFERS
...........................................................................................................................40
5.7.1
IN端点缓冲区...............................................................................................................40
5.7.2
OUT端点缓冲区...........................................................................................................41
5.8
USB牛逼
美东时间
M
副执行秘书办公室
..........................................................................................................................42
6
中断和状态寄存器操作............................................. .................. 43
6.1
6.2
6.3
7
I
NTERRUPT
S
TATUS
R
EGISTERS
( IRQSTAT0 , IRQSTAT1 ) ............................................. .............. 43
E
NDPOINT
R
反应的影响
R
EGISTERS
( EPRSP_CLR , EPRSP_SET ) ............................................. ....... 43
E
NDPOINT
S
TATUS
R
EGISTER
( EP_STAT0 , EP_STAT1 ) ............................................. ................. 43
电源MANAGEMENT.................................................................................................................44
7.1
S
USPEND
M
ODE
..............................................................................................................................44
7.1.1
暂停Sequence...........................................................................................................44
7.1.2
主机启动Wake-Up.........................................................................................................45
7.1.3
设备远程Wake-Up.......................................................................................................45
7.1.4
恢复中断...................................................................................................................45
7.2
NET2270 P
OWER
C
ONFIGURATION
...............................................................................................45
7.2.1
自供电Device..............................................................................................................45
7.2.2
低功耗模式.................................................................................................................45
7.2.2.1
7.2.2.2
USB挂起(不插电的USB ) ........................................... .................................................. 0.45
上电待机............................................................................................................................46
8
配置REGISTERS.....................................................................................................47
8.1
R
EGISTER
D
ESCRIPTION
.................................................................................................................47
______________________________________________________________________________
NetChip科技公司, 2003
335先锋路,加州山景城94041
电话:( 650 ) 526-1490传真( 650 ) 526-1494
http://www.netchip.com
REV 3.6 , 2003年4月17日
4