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TMS320DM8148_1109 Datasheet(PDF) 22 Page - Texas Instruments |
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TMS320DM8148_1109 Datasheet(HTML) 22 Page - Texas Instruments |
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22 / 360 page  Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox Mailbox L4 Interconnect Interrupt Interrupt Interrupt Interrupt Mailbox Module ARM Cortex-A8 C674x+ DSP Media Controller TMS320DM8148, TMS320DM8147, TMS320DM8146 SPRS647B – MARCH 2011 – REVISED SEPTEMBER 2011 www.ti.com 2.11 Mailbox Module Overview The device Mailbox module facilitates communication between the ARM Cortex-A8, C674x DSP, 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 2-4): • 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 • Four interrupts (one to ARM Cortex-A8, one to C674x, and two to Media Controller) Figure 2-4. Mailbox Module Block Diagram For more details on the Mailbox Module, see the Mailbox section of the Chip Level Resources chapter of the TMS320DM814x DaVinci Digital Media Processors Technical Reference Manual (Literature Number: SPRUGZ8). 22 Device Overview Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320DM8148 TMS320DM8147 TMS320DM8146 |
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