SPEAR320S datasheet(18/113 Pages) STMICROELECTRONICS

18 / 113 page

Device functions

SPEAr320S

18/113

Doc ID 022508 Rev 2

The interface is compliant to the following standards:

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SD Host Controller Standard Specification, version 2.0

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SDIO Card Specification, version 2.0

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SD Memory Card Specification Draft, version 2.0

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SD Memory Card Security Specification, version 1.01

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MMC Specification, version 3.31 and 4.2

Main features:

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Up to 100 Mbps data rate using 4 parallel data lines (SD4 bit mode)

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Up to 416 Mbps data rate using 8-bit parallel data lines (SD8 bit mode)

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DMA-based and non-DMA modes of operation

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Support for MMC Plus and MMC Mobile

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Card detection (insertion / removal)

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Card password protection

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Host clock rate variable between 0 and 48 MHz

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Multimedia card interrupt mode

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Cyclic redundancy check: CRC7 (command) and CRC16 (data integrity)

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Error correction code (ECC) support for MMC4.2 cards

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Supports for Read Wait Control and Suspend/Resume

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FIFO overrun and under-run handling by stopping SD clock

2.11

CAN 2.0 ports

SPEAr320S provides two independent CAN (controller area network) bus ports, typically

used in automotive, industrial and medical applications. For the connection to the physical

layer, an additional transceiver per port is required.

For communication on a CAN network, the controller enables to configure individual

message objects. The message objects and identifier masks for acceptance filtering of

received messages are stored in an integrated message RAM. All functions concerning the

handling of messages are implemented by a message handler. Those functions are the

acceptance filtering, the transfer of messages between the CAN core and the message

RAM, the handling of transmission requests as well as the generation of interrupts.

Main features:

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Support for CAN protocol, version 2.0 part A and B

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Transfer rate up to 1 Mbps

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Internal RAM storage for up to 16 message objects (16 x 136 bytes memory)

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Identifier mask per message object

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Maskable interrupts

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Programmable loop-back mode for self-test operation

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Disabled automatic retransmission mode for time triggered CAN applications

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