HC4GX15 Datasheet, PDF (614/668 Pages) Altera Corporation – HardCopy IV Device Handbook

3–8
Chapter 3: HardCopy IV GX ALTGX_RECONFIG Megafunction User Guide
Dynamic Reconfiguration
Table 3–2. MegaWizard Plug-In Manager Options (Page 4) (Part 2 of 2)
ALTGX_RECONFIG
Setting
Write Control
Read Control
Description
Reference
The PMA control ports available to write various analog
settings to the transceiver channels controlled by the
dynamic reconfiguration controller are as follows:
■ tx_vodctrl—voltage Output Differential (VOD) —
3 bits per channel
■ tx_preemp_0t—pre-emphasis control pre-tap —
5 bits per channel
“Dynamically Reconfiguring PMA
Controls” section of the
HardCopy IV GX Dynamic
Reconfiguration chapter in
volume 3 of the HardCopy IV
Device Handbook
■ tx_preemp_1t—pre-emphasis control 1st
post-tap—5 bits per channel
■ tx_preemp_2t—pre-emphasis control 2nd
post-tap—5 bits per channel
■ rx_eqdcgain—equalizer DC gain—3 bits per
channel
■ rx_eqctrl—equalizer control—4 bits per channel
These are optional signals. The signal widths are based on
the setting you entered for the What is the number of
channels controlled by the reconfig controller? option
and whether you enable the Use
'logical_channel_address' port for Analog controls
reconfiguration option. At least one of these PMA control
ports must be enabled to configure and use the dynamic
reconfiguration controller.
The PMA control ports available to read the existing values
from the transceiver channels controlled by the dynamic
reconfiguration controller are as follows:
■ tx_vodctrl_out—VOD)—3 bits per channel
■ tx_preemp_0t_out—pre-emphasis control
pre-tap—5 bits per channel
■ tx_preemp1t_out—pre-emphasis control 1st
post-tap—5 bits per channel
■ tx_preemp_2t_out—pre-emphasis control 2nd
post-tap—5 bits per channel
■ rx_eqdcgain_out—Equalizer DC gain—3 bits per
channel
■ rx_eqctrl_out—Equalizer control—4 bits per
channel
These are optional signals. The signal widths are based on
the setting you entered for the What is the number of
channels controlled by the reconfig controller? option
and whether you enable the Use
'logical_channel_address' port for Analog controls
reconfiguration option. The PMA controls are available for
selection only if the corresponding write control is
selected. Read and write transactions cannot be
performed simultaneously.
HardCopy IV Device Handbook Volume 3
© June 2009 Altera Corporation