EP1S20F484C6N Altera, EP1S20F484C6N Datasheet - Page 516

• Manufacturer Part Number: EP1S20F484C6N
• Description: IC STRATIX FPGA 20K LE 484-FBGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S20F484C6N

• Number Of Logic Elements/cells: 18460
• Number Of Labs/clbs: 1846
• Total Ram Bits: 1669248
• Number Of I /o: 361
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

SERDES Bypass DDR Differential Signaling
Figure 5–29.
5–44
Stratix Device Handbook, Volume 2
inclock
datain
×
2 Data Rate Receiver Channel with Deserialization Factor of 8
DDR IOE
DFF
DFF
PLL
SERDES Bypass DDR Differential Signaling Transmitter
Operation
The
output circuitry to transmit high-speed serial data. The DDR output
circuitry consists of a pair of shift registers and a multiplexer. The shift
registers capture the parallel data on the clock’s rising edge (generated by
the PLL), and a multiplexer transmits the data in sync with the clock.
Figure 5–30
the clock. In this example, the inclock signal is running at half the speed
of the data. However, other combinations are possible.
the DDR output and the other modules used in a
interface with the system logic.
×4
×1
×
2 differential signaling transmitter uses the Stratix device DDR
Latch
shows the DDR timing relation between the parallel data and
Register
Register
Shift
Shift
D0, D2, D4, D6
D1, D3, D5, D7
Register
×
2 transmitter design to
Figure 5–31
Altera Corporation
Stratix
Logic
Array
Clock
July 2005
shows