UM0851 datasheet(111/245 Pages) STMICROELECTRONICS

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UM0851

Communication device drivers

Doc ID 16604 Rev 2

111/245

4.9.8

References

●

Socket-CAN project, http://developer.berlios.de/projects/socketcan

4.10

HDLC driver

4.10.1

Hardware overview

SPEAr310 has one TDM/E1 HDLC controller and two RS485 HDLC controllers.

TDM/E1 HDLC controller

The TDM/E1 HDLC controller supports up to 128 HDLC channels multiplexed on one single

TDM interface. The main features provided by the TDM/E1 HDLC controller are listed

below

General IP features:

●

AMBA 2.0 compliant, AMBA slave interface for programming the controller, AMBA

master interface for transferring data between memory and IP

●

DMA engine included

●

Support data buffer queue

●

Support interrupt queue

●

Miscellaneous interrupt generation

TDM/E1 features:

●

Six signals interface: TXCLK, RXCLK, TXD, RXD, TSYNC, RSYNC

●

Supports duplex Tx/Rx communication

●

For TDM applications, up to 8 Mbps per Tx/Rx channel; For E1 applications, up to 2

Mbps per Tx/Rx channel

●

For TDM applications, 128 time-slots / Frame (125us); For E1 applications, 32 time-

slots / Frame (125us)

●

Supports any time-slots banding to any Tx/Rx Channel

●

Data sending/sampling time is configurable

●

Delay between Bit 0 of TS0 and SYNC signal is configurable

CAN_DEV

Enables the common framework for platform CAN drivers with

Netlink support. This is the standard library for CAN drivers

CAN_VCAN

Virtual Local CAN interface

Table 35.

CAN menuconfig kernel options (continued)

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