DMN-8600 DVD Recorder System Processor
14-1
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
LSI Logic Confidential
Chapter 14
Bitstream I/O (Storage) Port
This chapter describes the bitstream I/O port and contains the following
sections:
•
Section 14.1, “ATAPI Interface”
•
•
•
Section 14.4, “1394 Controller”
The primary BIO port consists of two component modules that operate
independently:
•
ATAPI/SD/CD Controller: Interfaces to recordable storage devices.
•
1394 Controller: Transmits and receives MPEG transport and
DV streams on up to four channels in each direction.
Note:
The secondary BIO port, described in
“Secondary Bitstream Interface,”
shares its pins with the
ATAPI/SD/CD module.
In addition, the BIO uses a DMA interface for communication with
SDRAM. This is similar to other modules in DoMiNo.
The BIO provides read/write pointers, base and limit registers for
managing six SDRAM DMA ring buffers for ATAPI/SD sectors, transport
channel packets, 1394 isochronous packet input and output, and
1394 asynchronous packet input and output. Through the DMA channels,
the BIO writes the input data into ring buffers during the input operations
and reads output data from ring buffer during output operations. Two
more ring buffers are supported to manage input data for
SDRAM-to-SDRAM operations.
Содержание DMN-8600
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