Altera Stratix GX Transceiver - Manual (Page 306)

B–10 Altera Corporation
Stratix GX Transceiver User Guide January 2005
Parameter Descriptions
PLL_INCLOCK_PERIOD Integer Yes Specifies, in picoseconds (ps), the period or frequency
of the transceiver block transmitter PLL. If omitted, the
default is 0. The value of this parameter is used to
compute the input clock frequency in MHz; (1 /
PLL_INCLOCK_PERIOD) * 1,000,000. When you
specify
PLL_INCLOCK_PERIOD , the
CRU_INCLOCK_PERIOD parameter cannot be used.
For more information, see the table in the comments
for the
DATA_RATE parameter.
DATA_RATE Integer Yes Specifies, in Mbps, the rate of data from the transceiver
block transmitter channel and the transceiver block
receiver channel. If omitted, the default is
0 .
DATA_RATE_REMAINDER Integer No Specifies, in bits per second (bps), the remainder of the
DATA_RATE parameter; DATA_RATE * 1,000,000.
This parameter helps to specify non-integral data
rates. If omitted, the default is
0 .
USE_DOUBLE_DATA_MODE String No Specifies whether to use double data width mode. If
you enable this parameter, the
CHANNEL_WIDTH
parameter value is 16 or 20 . When the
CHANNEL_WIDTH parameter value is 8 or 10 , the
transceiver block receiver channel is not in double data
width mode. Values are
ON and OFF . If omitted, the
default is OFF .
USE_8B_10B_MODE String No Specifies whether to use the 8B/10B decoder. If this
parameter is turned on, the deserialization factor is 10,
and the
CHANNEL_WIDTH parameter value is 8 or 16.
Values are ON and OFF . If omitted, the default is OFF .
DWIDTH_FACTOR Integer No Specifies the width of the double data factor. Values
are
1 and 2 . If omitted, the default is 1 . A value of 1
means that value of the USE_DOUBLE_DATA_MODE
parameter is OFF , and a value of 2 means that value
of the USE_DOUBLE_DATA_MODE parameter is ON .
CRU_INCLOCK_PERIOD Integer No Specifies, in picoseconds (ps), the period or frequency
of the transceiver block receiver PLL. If omitted, the
default is 0. The value of this parameter computes the
input clock frequency in MHz; (1 /
CRU_INCLOCK_PERIOD ) * 1,000,000. When you
specify the CRU_INCLOCK_PERIOD , the
PLL_INCLOCK_PERIOD parameter cannot be used.
For more information, see the table in the comments
for the
DATA_RATE parameter.
Table B–3. Parameter Descriptions (Part 2 of 6)
Parameter Type Required Comments