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4 autobahn interface – Kontron VM62 User Manual

Page 31

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Chapter 2 Functional Description

VM62(A) / VM42(A) User’s Manual

Group

Signal Name

Mneumonic

Function

SI

SI Receive Data

L1RXDA,
L1RXDB

Serial input to the Time Division Multiplexed (TDM)
channel A or channel B

SI Transmit Data

L1TXDA,
L1TXDB

Serial output from the TDM channel A or channel B

SI Receive Clock

L1RCLKA,
L1RCLKB

Input receive clock to TDM channel A or channel B

SI Transmit Clock

L1TCLKA,
L1TCLKB

Input transmit clock to TDM channel A or channel B

SI Transmit Sync
Signals

L1TSYNCA,
L1TSYNCB

Input transmit data sync signal to TDM channel A or
channel B

SI Receive Sync
Signals

L1RSYNCA,
L1RSYNCB

Input receive data sync signal to TDM channel A or
channel B

IDL Interface
Request

L1RQA, L1RQB

IDL interface request to transmit on the D channel.
Output from the SI

SI Output Clock

L1CLKOA,
L1CLKOB

Output serial data rate clock. Can output a data rate
clock when the input clock is 2x the data rate

SI Data Strobes

L1ST4-L1ST1

Serial data strobe outputs can be used to gate clocks to
external devices that do not have a biult-in Time Slot
Assigner (TSA)

BRG

Baud Rate Generator
Out 4-1

BRGO4-BRGO1

Baud rate generator output clock allows baud rate
generator to be used externally

BRG Input Clock

CLK2, CLK6

Baud rate generator input clock from which BRG will
derive the baud rates

PIP

Port B 15-0

PB15-PB0

PIP Data I/O Pins

Strobe Out

STRBO

This input causes the PIP output data to be placed on
the PIP data pins

Strobe In

STRBI

This input causes data on the PIP data pins to be
latched by the PIP as input data

SDMA

SDMA
Acknowledge 2-1

_SDACK2-
_SDACK1

SDMA output signals used in RISC receiver to mark
fields in the Ethernet receive frame

2.5.4 AutoBahn Interface

In preparation

Page 2-16

© 1995 PEP Modular Computers

May 17, 1996

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