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参数资料
| 型号： | ST40RA200XH6E |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 200 MHz, RISC PROCESSOR, PBGA372 |
| 封装： | 27 X 27 MM, 2.33 MM HEIGHT, PLASTIC, BGA-372 |
| 文件页数： | 16/94页 |
| 文件大小： | 2144K |
| 代理商： | ST40RA200XH6E |
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4 Architecture
ST40RA
23/92
4.3.2
PCI interface
The PCI interface complies to the PCI v2.1 and Power Management Interface V1.0 specifications. It
is 32 bits wide and operates at 33 or 66 MHz. Master and target mode are supported. A PCI arbiter
and clock generator is provided inside the ST40RA. For details on the configuration options for the
PCI interface please see ST40 System Architecture Manual, Volume 2: Bus Interfaces.
4.3.3
EMI/MPX interface
The EMI/MPX interface contains the following blocks. For full details of the configuration options of
the EMI please see the ST40 System Architecture Manual, Volume 2: Bus Interfaces.
EMI memory interface initiator
The EMI provides access to ROMs, SDRAM, memory mapped asynchronous external peripherals
and synchronous MPX bus peripherals. The EMI supports burst mode flash ROM and MPX for
memory-mapped device coupling. The ST40RA GPDMA unit accesses external devices and two
sets of DMA channels control signals are provided for this purpose.
EMPI memory interface target
The EMPI is a synchronous MPX target that allows for an external MPX initiator to access the
ST40RA internal memory space. The EMPI contains a general purpose control channel and four
high performance channels each of which implements a write buffer and a pair of 32-byte read-
ahead buffers able to optimize external device burst access to and from the ST40RA internal
memory. These buffers can be associated with memory regions within the ST40RA and external
DMA channels. Four sets of DMA handshake signals are provided to the EMPI to optimize long
burst transfers between the ST40RA and external initiators like the STi5514.
MPX bus arbiter
The ST40RA has an internal programmable bus arbiter to optimize utilization of the MPX bus. The
ST40RA MPX arbiter supports one external initiator and has programmable bus priority (ST40RA or
external device), bus parking (ST40RA, external, idle or last user) and latency timers. The internal
arbiter can be bypassed if an external arbiter supporting more initiators is required.
4.4
I/O devices
4.4.1
Mailbox
The ST40 and the external microprocessor communicate with each other and synchronize their
activities using the memory-mapped mailbox. Processes generate interrupts to either CPU, and
send and receive messages between the two CPUs. There are buffers for message queueing in
both directions and interrupt bits can be set in each direction. Access to the mailbox from external
devices is through the ST40RA EMPI or the PCI target interface.
4.5
Software
4.5.1
Development systems and software
The ST40RA supports application development, with a full range of debug features and an
emulation mode (ASE). The ASE mode has a dedicated 1-Kbyte buffer for emulator firmware,
supporting performance counters and branch trace. The ST40RA, with its memory management
unit, supports standard operating systems including WindowsCE and Linux. The ST40 has a wide
range of development support from ST and third parties, and efficiently runs applications written in
C, C++ and Java.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST40RP | 功能描述:两端交流开关元件 ST40RP RoHS:否 制造商:STMicroelectronics 转折电流 VBO:45 V 安装风格:SMD/SMT 封装 / 箱体:SOT-23 封装:Reel |
| ST40-TOOLSET/WIN | 制造商:STMicroelectronics 功能描述:ST40-TOOLSET/WIN - Bulk |
| ST40X-10S-CV | 制造商:Hirose 功能描述: |
| ST40X-10S-CV(80) | 功能描述:I/O 连接器 10P CBLE PLUG STD SOLDER SHIELDED RoHS:否 制造商:Hirose Connector 产品:Plugs 系列:DH 端口数量: 位置/触点数量:51 节距:1 mm 触点电镀: 触点材料: 型式:Male 电流额定值:0.5 A 安装风格:Cable 端接类型:IDC 颜色: 安装角: |
| ST40X-10S-CVR | 制造商:HRS 制造商全称:HRS 功能描述:Interface Connectors for Miniature, Portable Terminal Devices |
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