Sundance SMT329 - Manual (Page 42)

4.8.1 TIM Connectors
The global connector (J3) contains the full set of TIM global bus signals. For accesses by the
TIM to the global bus, the most significant address bit, A31 is a ‘1’. This bit is not an output
pin but used internally on a TIM.
The bottom, or secondary, connector (J2) is used only for comm-ports, power and user
definable connections (UDP 7 to 12). The user-definable pins are not implemented on this
motherboard. Comm-ports 1, 2, 4 and 5 are on this connector.
The top, or primary, connector (J1) is used for the remaining two comm-ports (0 and 3),
power, interrupts, control and JTAG. Both plus and minus 12v are supplied by the
motherboard to these top connectors. The JTAG signals are derived from the external JTAG
source (see JTAG section).
An external 50MHz clock is supplied to all TIM sites by the SMT329, which should be used
for optimum global bus performance. The SMT329 uses the TIM H1 clock output to time the
generation of the ready signal which it outputs to the TIM.
A power supply of +3.3 Volts is present at both TIM mounting holes. This can be connected
to the TIM by using metal bolts.
Refer to the TIM-40 Module Specification from Texas Instruments for exact connector
placement. Adjacent TIM sites are separated by exactly 2.6".
4.9 ROCKETIO
The Virtex4 has a total of 16 Rocketio transceivers: 4 are connected to the VXS channels on
the centre VME P0 connector, 4 are connected to the VME P2 connector for 1G Ethernet, and
8 are connected to the TIM RSL ports. A cross bar switch is implemented in the Virtex4
which allows any RSL A port to be connected to VXS ports 1-4, and any RSL B port to be
connected to VXS ports 5-8. In addition it can connect any Rocketio port to 1 of the 4 DMA
channels, so that data can be streamed to or from the sram. The cross bar switch topology is
strictly point to point, and is determined by a bit map held in the FLASH, which is only
loaded into the crossbar switch following a board reset. Dynamic connectivity changes are
not supported. All DMA and communications protocol control must be performed by an
intelligent TIM module using the global bus. Note that 4 of the VXS transceivers are shared
with Gigabit Ethernet, and this is set at board assembly, so the required option must be
stated when ordering.
Programming details are in development and will be released as soon as they are finalised.
4.10 Gigabit Ethernet
The Virtex4 has 4 Gigabit Ethernet controllers which are directly connected to user defined
I/O pins on row C of the VME P2 connector. These signals are passed through the P2
connector on the motherboard to a transition module which is fitted to the back of the
motherboard. This transition module has the Ethernet transceivers, the magnetic isolation
and the RJ45 connectors.
User Manual SMT329 Page 42 of 52 Last Edited: 09/02/2007 10:58:00