4 autobahn interface – Kontron VM62 User Manual
Page 31
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