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STR720RBQ6 bảng dữ liệu(PDF) 126 Page - STMicroelectronics

tên linh kiện STR720RBQ6
Giải thích chi tiết về linh kiện  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STR720RBQ6 bảng dữ liệu(HTML) 126 Page - STMicroelectronics

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STR720 - ATAPI-IDE INTERFACE
126/401
12 ATAPI-IDE INTERFACE
12.1 Introduction
The ATAPI-IDE controller allows the STR720 to interface to up to 2 devices such as Hard Disk
or CD-ROM drives. Communication over the IDE bus is performed in PIO mode only. IDE
communication in DMA or UDMA modes is not supported. The STR720 initiates
communication with the IDE device by writing IDE commands directly in the IDE registers. To
save CPU time, the STR720 DMA controller may be used in “memory-to-memory” transfer
mode to access the IDE registers.
12.2 Main Features
The ATAPI-IDE controller supports the following features:
•
Primary-only channel, supporting up to two IDE devices
•
Support for CD-ROM and tape peripherals
•
Independently programmable timing for each device
•
Programmable posted writes and read-prefetch
•
Software selectable endianness for data read from CDROM / tape peripheral
•
Support for I/O Channel Ready
•
Support for PIO modes 0, 2, 3 and 4
•
Variable IDE:AHB clock ratio
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