Kontron VMP3 - Manual (Page 52)

Functional Description VMP3
Page 2 - 18 © 2005 Kontron Modular Computers GmbH ID 29230, Rev. 01
29230
.01.UG.VC.050727/091426
P R E L I M I N A R Y
2.4.7.3 CAN Interface
To provide field bus support, there are signals available to implement a CAN bus interface
(Philips SJA 1000) via the J11 connector. The signals provided are at 5V TTL voltage levels
and must be adapted to the CAN bus levels through the use of appropriate CAN transceivers
on the carrier board.
2.4.7.4 High Speed Serial Interfaces
Four, full modem, serial ports (SER1, 2, 3, and 4) are available on the I/O expansion connector.
Eight signals per port are provided to realize asynchronous high speed serial links interfaced
using dedicated controlling/handshaking. The VMP3 uses DUARTs (EXAR XR 16C2850 or
XR16L2750) which are 16550 compatible and provide hardware handshaking support for
RS485 operation.
Table 2-14: CAN Interface Signal Type and Description
SIGNAL DESCRIPTION
CAN1_TX[0:1] Transmit data output driver
CAN1_RX[0:1] Receive data input channel
Note...
For more information concerning interfacing of the SJA 1000 to the CAN PHY,
refer to the Philips Application Note: AN97076 or the datasheet of the PCA
82C250 CAN controller interface.
Table 2-15: High Speed Serial Interface Signal Type and Description
SIGNAL DESCRIPTION
SERn_TXD Transmit data output
SERn_RXD Receive data input
SERn_RTS Request to send output
SERn_CTS Clear to send input
SERn_DTR Data terminal ready output
SERn_CD Carrier detect input
SERn_DSR Data set ready input
SERn_RI Ring indicator input
Note...
All signals are available and supplied at 3.3V TTL levels. Further signal condi-
tioning via appropriate transceivers on the carrier board is required to support
the respective communications standards.