EP4SGX360FH29C3N Altera, EP4SGX360FH29C3N Datasheet - Page 731

• Manufacturer Part Number: EP4SGX360FH29C3N
• Description: IC STRATIX IV FPGA 360K 780HBGA
• Manufacturer: Altera
• Series: Stratix® IV GXr

Specifications of EP4SGX360FH29C3N

• Number Of Logic Elements/cells: 353600
• Number Of Labs/clbs: 14144
• Total Ram Bits: 22564
• Number Of I /o: 289
• Voltage - Supply: 0.87 V ~ 0.93 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 780-HBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Chapter 2: Transceiver Clocking in Stratix IV Devices
FPGA Fabric-Transceiver Interface Clocking
Figure 2–32. Sixteen Identical Channels Across Four Transceiver Blocks for Example 5
February 2011 Altera Corporation
Common Clock Driver Selection Rules
The common clock driver driving the tx_coreclk ports of all identical channels must
have 0 PPM frequency difference with respect to the transmitter phase compensation
FIFO read clocks of these channels. If there is any frequency difference between the
FIFO write clock (tx_coreclk) and the FIFO read clock, the FIFO overflows or
under-runs, resulting in corrupted data transfer between the FPGA fabric and the
transmitter.
Channel [15:12]
Channel [3:0]
Channel [11:8]
and Control
and Control
Channel [7:4]
and Control
and Control
TX Data
TX Data
TX Data
TX Data
Logic
Logic
Logic
Logic
FPGA
Fabric
tx_coreclk[15:12]
tx_coreclk[3:0]
tx_coreclk[11:8]
tx_coreclk[7:4]
Clock Driver
Common
tx_clkout[12]
tx_clkout[8]
tx_clkout[4]
tx_clkout[0]
Transceiver Block
Transceiver Block
Transceiver Block
Transceiver Block
Channel 3
Channel 2
Channel 1
Channel 0
Channel 3
Channel 2
Channel 1
Channel 0
Channel 3
Channel 2
Channel 1
Channel 0
Channel 3
Channel 2
Channel 1
Channel 0
Stratix IV Device Handbook Volume 2: Transceivers
GXBR
GXBR3
GXBR
GXBR
2
0
1
2–59