EP4SE530H40I3 Altera, EP4SE530H40I3 Datasheet - Page 912

• Manufacturer Part Number: EP4SE530H40I3
• Description: IC STRATIX IV FPGA 530K 1517HBGA
• Manufacturer: Altera
• Series: STRATIX® IV Er

Specifications of EP4SE530H40I3

• Number Of Logic Elements/cells: 531200
• Number Of Labs/clbs: 21248
• Total Ram Bits: 27376
• Number Of I /o: 976
• Voltage - Supply: 0.87 V ~ 0.93 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 1517-HBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

5–66
Stratix IV Device Handbook Volume 2: Transceivers
Offset Cancellation Feature
1
The Stratix IV GX and GT devices provide an offset cancellation circuit per receiver
channel to counter the offset variations due to process, voltage, and temperature
(PVT). These variations create an offset in the analog circuit voltages, pushing them
out of the expected range. In addition to reconfiguring the transceiver channel, the
dynamic reconfiguration controller performs offset cancellation on all receiver
channels connected to it on power up.
The Offset cancellation for Receiver channels option is automatically enabled in
both the ALTGX and ALTGX_RECONFIG MegaWizard Plug-In Managers for
Receiver and Transmitter and Receiver only configurations. It is not available for
Transmitter only configurations. For Receiver and Transmitter and Receiver only
configurations, you must connect the necessary interface signals between the
ALTGX_RECONFIG and ALTGX (with receiver channels) instances.
Offset cancellation is automatically executed once every time the device is powered
on. The control logic for offset cancellation is integrated into the dynamic
reconfiguration controller. You must connect the ALTGX_RECONFIG instance to the
ALTGX instances (with receiver channels) in your design. You must connect the
reconfig_fromgxb, reconfig_togxb, and necessary clock signals to both the
ALTGX_RECONFIG and ALTGX (with receiver channels) instances.
The offset cancellation control functionality remains the same for both regular
transceiver channels and PMA-only channels.
Operation
Every ALTGX instance for Receiver and Transmitter or Receiver only configurations
require that the Offset cancellation for Receiver channels option is enabled in the
Reconfig screen of the ALTGX MegaWizard Plug-In Manager. This option is enabled
by default for the above two configurations. It is disabled for the Transmitter only
configuration.
Because this option is enabled by default, the ALTGX instance must be connected to
an ALTGX_RECONFIG instance (dynamic reconfiguration controller). The offset
cancellation controls are also enabled by default in the Reconfiguration settings
screen of the ALTGX_RECONFIG instance.
You must also set the starting channel number in the What is the starting channel
number? option for every ALTGX instance connected to the ALTGX_RECONFIG
instance. For more information, refer to:
■
■
■
“Logical Channel Addressing of Regular Transceiver Channels” on page 5–6
“Logical Channel Addressing of PMA-Only Channels” on page 5–7
“Logical Channel Addressing—Combination of Regular Transceiver Channels and
PMA-Only Channels” on page 5–9
Chapter 5: Dynamic Reconfiguration in Stratix IV Devices
Dynamic Reconfiguration Modes Implementation
February 2011 Altera Corporation