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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AM3874 датащи(PDF) 13 Page - Texas Instruments |
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AM3874 датащи(HTML) 13 Page - Texas Instruments |
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13 / 345 page  Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox L4 Interconnect Interrupt Interrupt Interrupt Mailbox Module ARM Cortex-A8 Media Controller AM3874, AM3872, AM3871 www.ti.com SPRS695 – SEPTEMBER 2011 2.8 Mailbox Module Overview The device Mailbox module facilitates communication between the ARM Cortex-A8 and the Media Controller. It consists of twelve mailboxes, each supporting a 1-way communication between two of the above processors. The sender sends information to the receiver by writing a message to the mailbox registers. Interrupt signaling is used to notify the receiver that a message has been queued or to notify the sender about an overflow situation. The Mailbox module supports the following features (see Figure 2-2): • 12 mailboxes • Flexible mailbox-to-processor assignment scheme • Four-message FIFO depth for each message queue • 32-bit message width • Message reception and queue-not-full notification using interrupts • Three interrupts (one to ARM Cortex-A8 and two to Media Controller) Figure 2-2. Mailbox Module Block Diagram For more details on the Mailbox Module, see the Mailbox section of the Chip Level Resources chapter of the AM387x Sitara ARM Microprocessors (MPUs) Technical Reference Manual (Literature Number: SPRUGZ7). Copyright © 2011, Texas Instruments Incorporated Device Overview 13 Submit Documentation Feedback Product Folder Link(s): AM3874 AM3872 AM3871 |
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