xCORE-Analog sliceKIT Hardware Manual
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Reset
Boot
D42 = 0
D43 = X
SPI = EN
D42 = 0
D43 = X
SPI = EN
Disable
D42 =
D43 = 1
SPI = DIS
Enable
D42 =
D43 = 0
SPI = EN
D42, D43,D0,
D1, D10 and D11
available
D42 and D43 available
D0, D1, D10 and D11
used by SPI
Figure 4:
SPI Select
Flow Diagram
If not in this mode, the devices will boot from SPI or xCONNECT link as appropriate.
2.6
xCONNECT Links
The Chain Connector contains two 5-bit xCONNECT links, XLA and XLB, which
can be used for chaining sliceKIT Core Boards together. The links from Tile 0 are
connected to the
Chain
Connector and the
Star
Slot. The links from Tile 1 are
connected to the
Square
Slot.
The only complication in this system is use of the xSCOPE 2-bit xCONNECT Link.
This link overlaps a 4 bit port on the
Star
Slot connector so it would not be possible
to use this for user I/O at the same time as xSCOPE.
To work around this, a switch is present on the XSYS adapter board to either enable
or disable the xSCOPE xCONNECT Link.
When disabled, these pins are disconnected from the
Chain
Connector and are free
for use on the
Star
Slot. When enabled they will work as an xCONNECT link and
hence will appear on the relevant pins of the
Star
Slot.
It is recommended that if a sliceCARD is used in the
Star
Slot the xSCOPE switch is
off on the XSYS Adaptor Card to ensure correct operation of the sliceCARD in the
Star
slot.
XM005221A
