EP1S20F484C6N Altera, EP1S20F484C6N Datasheet - Page 482
![IC STRATIX FPGA 20K LE 484-FBGA](/photos/6/72/67258/544-484-fbga_sml.jpg)
EP1S20F484C6N
Manufacturer Part Number
EP1S20F484C6N
Description
IC STRATIX FPGA 20K LE 484-FBGA
Manufacturer
Altera
Series
Stratix®r
Datasheet
1.EP1S10F484I6N.pdf
(864 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP1S20F484C6N
Manufacturer:
ALTERA
Quantity:
534
- Current page: 482 of 864
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Principles of SERDES Operation
Figure 5–6. Transmitter Timing Diagram
5–10
Stratix Device Handbook, Volume 2
Internal ×10 clock
Internal ×1 clock
TXLOADEN
data input
Receiver
n – 1
Transmitter Clock Output
Different applications and protocols call for various clocking schemes.
Some applications require you to center-align the rising or falling clock
edge with the data. Other applications require a divide version of the
transmitted clock, or the clock and data to be at the same high-speed
frequency. The Stratix device transmitter clock output is versatile and
easily programmed for all such applications.
Stratix devices transmit data using the source-synchronous scheme,
where the clock is transmitted along with the serialized data to the
receiving device. Unlike APEX
devices do not have a fixed transmitter clock output pin. The Altera
Quartus II software generates the transmitter clock output by using a fast
clock to drive a transmitter dataout channel. Therefore, you can place
the transmitter clock pair close to the data channels, reducing clock-to-
data skew and increasing system margins. This approach is more flexible,
as any channel can drive a clock, not just specially designated clock pins.
Divided-Down Transmitter Clock Output
You can divide down the high-frequency clock by 2, 4, 8, or 10, depending
on the system requirements. The various options allow Stratix devices to
accommodate many different types of protocols. The divided-down clock
is generated by an additional transmitting data channel.
n – 0
9
8
7
6
TM
20KE and APEX II devices, Stratix
5
4
3
2
Altera Corporation
1
0
July 2005
®
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