EP2AGX65DF29I5N Altera, EP2AGX65DF29I5N Datasheet - Page 249

• Manufacturer Part Number: EP2AGX65DF29I5N
• Description: IC ARRIA II GX FPGA 65K 780FBGA
• Manufacturer: Altera
• Series: Arria II GXr

Specifications of EP2AGX65DF29I5N

• Number Of Logic Elements/cells: 60214
• Number Of Labs/clbs: 2530
• Total Ram Bits: 5246
• Number Of I /o: 364
• Voltage - Supply: 0.87 V ~ 0.93 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 780-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Chapter 8: High-Speed Differential I/O Interfaces and DPA in Arria II Devices
Differential Transmitter
Figure 8–5. Serializer Bypass Path
Notes to
(1) All disabled blocks and signals are grayed out.
(2) In DDR mode, tx_inclock clocks the IOE register. In SDR mode, data is directly passed through the IOE.
(3) In SDR and DDR modes, the data width to the IOE is 1 and 2 bits, respectively.
(4) Arria II GX center/corner PLL or Arria II GZ left/right PLL.
Figure 8–6. LVDS Transmitter in Clock Output Mode
Note to
(1) Arria II GX center/corner PLL or Arria II GZ left/right PLL.
December 2010 Altera Corporation
Figure
Figure
(LVDS_LOAD_EN, diffioclk, tx_coreclock)
8–6:
8–5:
tx_coreclock
Differential applications often require specific clock-to-data alignments or a specific
data rate to clock rate factors. You can configure any Arria II LVDS transmitter to
generate a source-synchronous transmitter clock output. This flexibility allows the
placement of the output clock near the data outputs to simplify board layout and
reduce clock-to-data skew. The output clock can also be divided by a factor of 1, 2, 4, 6,
8, or 10, depending on the serialization factor. The phase of the clock in relation to the
data can be set at 0° or 180° (edge or center aligned). The PLLs provide additional
support for other phase shifts in 45° increments. These settings are made statically in
the Quartus II MegaWizard
Figure 8–6
mode, you can use an LVDS data channel as a clock output channel.
FPGA
Fabric
FPGA
Fabric
tx_in 10
shows the Arria II LVDS transmitter in clock output mode. In clock output
(Note
1), (2),
DIN
Serializer
PLL (4)
PLL
(1)
3
DOUT
Parallel
Transmitter Circuit
(3)
LVDS_LOAD_EN
2
diffioclk
™
Plug-In Manager software.
IOE
Series
tx_inclock
Arria II Device Handbook Volume 1: Device Interfaces and Integration
LVDS Transmitter
IOE supports SDR, DDR, or
Non-Registered Datapath
LVDS Clock Domain
txclkout+
txclkout–
+
-
tx_out
8–9