IPSERIALLITE Altera, IPSERIALLITE Datasheet - Page 95

• Manufacturer Part Number: IPSERIALLITE
• Manufacturer: Altera

Specifications of IPSERIALLITE

• Lead Free Status / RoHS Status: Not Compliant

Specifications
Altera Corporation
August 2005
The advantages of a static pre-emphasis or equalization value are
simplicity and fewer signals to be routed. The disadvantage of this mode
is that the selected value is set identically for all lanes and cannot be
changed without regenerating another programming file.
Alternatively, if dynamic adjustment is enabled in the wizard, you can
dynamically configure the pre-emphasis or equalization setting while the
device is operating. This configuration is done by asserting encoded
values on the TX_PREEMPHASISCTRL and RX_EQUALIZATIONCTRL
buses, which are instantiated in the transceiver control interface when
you select this option. The encoded values are shown in
3–51. This configuration allows you to make quick performance
evaluations of the various settings without needing to compile and
regenerate multiple configuration files. Another advantage of this option
is that it allows the pre-emphasis or equalization of each lane to be
configured independently of the other lanes.
Avoid pre-emphasis settings that, together with the V
value greater than 1600 mV. Settings beyond this value do not damage the
buffer, but prevent the operation of the device from being represented
accurately.
Table 3–50. Pre-Emphasis Encoded Values
Table 3–51. Equalization Encoded Values
MegaCore Function Version 1.1.0
Pre-emphasis setting
Equalization setting
0 (default)
0 (default)
1
2
3
4
5
1
2
3
4
SerialLite MegaCore Function User Guide
TX_EQUALIZATIONCTRL[2..0]
TX_PREEMPHASISCTRL[2..0]
000
010
100
101
111
000
001
010
011
100
101
OD
Tables 3–50
setting, yield a
3–63
and