Multicore Fixed and Floating-Point System-on-Chip
Copyright 2012 Texas Instruments Incorporated
TMS320C6670 Peripheral Information and Electrical Specifications
195
SPRS689D—March 2012
TMS320C6670
7.11.2 DDR3 Memory Controller Electrical Data/Timing
The
DDR3 Implementation Guidelines
Application Report in
2.9 ‘‘Related Documentation from Texas
specifies a complete DDR3 interface solution as well as a list of compatible DDR3 devices.
The DDR3 electrical requirements are fully specified in the DDR3 Jedec Specification JESD79-3C. TI has performed
the simulation and system characterization to ensure all DDR3 interface timings in this solution are met; therefore,
no electrical data/timing information is supplied here for this interface.
Note—
TI supports
only
designs that follow the board design guidelines outlined in the application report.
7.12 I
2
C Peripheral
The Inter-Integrated Circuit (I
2
C) module provides an interface between DSP and other devices compliant with
Philips Semiconductors Inter-IC bus (I
2
C bus) specification version 2.1 and connected by way of an I
2
C bus.
External components attached to this 2-wire serial bus can transmit/receive up to 8-bit data to/from the SoC through
the I
2
C module.
7.12.1 I
2
C Device-Specific Information
The TMS320C6670 device includes an I
2
C peripheral module. NOTE: when using the I
2
C module, ensure there are
external pullup resistors on the SDA and SCL pins.
The I
2
C modules on the C6670 may be used by the DSP to control local peripheral ICs (DACs, ADCs, etc.) or may
be used to communicate with other controllers in a system or to implement a user interface.
The I
2
C port supports:
•
Compatibility with Philips I
2
C specification revision 2.1 (January 2000)
•
Fast mode up to 400 kbps (no fail-safe I/O buffers)
•
Noise filter to remove noise of 50 ns or less
•
7-bit and 10-bit device addressing modes
•
Multi-master (transmit/receive) and slave (transmit/receive) functionality
•
Events: DMA, interrupt, or polling
•
Slew-rate limited open-drain output buffers
Содержание TMS320C6670
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