Altera Stratix GX Transceiver - Manual (Page 314)

C–4 Altera Corporation
Stratix GX Transceiver User Guide January 2005
Known Issues
Quartus II Software Versions 4.0 SP1 & 4.1
For configurations 1 , 2 , and 3 , the Quartus II software versions 4.0 SP1
and 4.1 provide an error message if the resets are used as described in
those configurations. Unconstrained flows create a fit that does not have
the clock pin reset problem or a no-fit if such a fit cannot be found.
Quartus II software versions 4.0 SP1 and 4.1 provide an error message.
■ User assignments that force the previously discussed issues with
clock configuration yield a user error during fitter operation.
Examples of the error messages from the Quartus II software log are
shown below. These are generated for configurations
1 and 2 .
■ Error: Can’t place GXB pin HSDI_CLK1_IN_I at location AM7
because of incompatible location or I/O standard assignments
Error: Can’t place input clock HSDI_CLK1_IN_I at pin AM7 which
is in the same quad as XGMII
■ Error: Can’t place GXB transmitter or receiver channels and/or their
associated I/O pins due to illegal location or I/O standard
assignments or inappropriate device
Error: Can’t fit design in device
Figure C–2 shows an example of an error message.
Figure C–2. Error Messages
The following error messages are generated in the Quartus II software
fitter for configuration
3 .
■ Error: XGMII
GXB_RX:GXB_RX_b|CUSTOM_RX:CUSTOM_RX_inst|altgxb:altg
xb_component|xgm_machine[0] exists in a Quad that has no GXB
Transmitters and has GXB Transmitter PLL
GXB_RX:GXB_RX_b|CUSTOM_RX:CUSTOM_RX_inst|altgxb:altg
xb_component|pll[0], but all the RXANALOGRESET signals are
connected. This is not allowed.