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AT91SAM7X512 / 128分之256初步
25.4
25.5
25.6
25.7
25.8
25.9
USB时钟控制器............................................... ...................................... 182
外设时钟控制器............................................... ............................. 182
可编程时钟输出控制器.............................................. ........... 183
编程序列................................................ ................................ 183
时钟切换的详细信息............................................... .................................. 187
电源管理控制器（ PMC ）用户界面.................................. 190
26调试单元（ DBGU ） ............................................ .................................. 205
26.1
26.2
26.3
26.4
26.5
概观........................................................................................................205
框图................................................ ............................................... 206
产品相关................................................ .................................. 207
UART操作................................................ .......................................... 207
调试单元（ DBGU ）用户界面........................................... ................... 214
27并行输入/输出控制器（ PIO ） ......................................... 229 .......
27.1
27.2
27.3
27.4
27.5
27.6
概观........................................................................................................229
框图................................................ ............................................... 230
产品相关................................................ .................................. 231
功能说明................................................ ................................... 232
I / O线编程示例............................................ ....................... 237
并行输入/输出控制器（ PIO ）用户界面.................................... 238
28串行外设接口（SPI） ........................................... .............. 255
28.1
28.2
28.3
28.4
28.5
28.6
28.7
概观........................................................................................................255
框图................................................ ............................................... 256
应用框图............................................... .............................. 256
信号说明................................................ ......................................... 257
产品相关................................................ .................................. 257
功能说明................................................ ................................... 258
串行外设接口（SPI ）的用户界面.......................................... ..267
29两线接口（ TWI ） .......................................... ............................ 281
29.1
29.2
29.3
29.4
29.5
29.6
概观........................................................................................................281
框图................................................ ............................................... 281
应用框图............................................... .............................. 282
产品相关................................................ .................................. 282
功能说明................................................ ................................... 283
TWI用户界面............................................... ......................................... 294
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6120H–ATARM–17-Feb-09
