ep1sgx25d Altera Corporation, ep1sgx25d Datasheet - Page 23
ep1sgx25d
Manufacturer Part Number
ep1sgx25d
Description
Stratix Gx Device Family Data Sheet
Manufacturer
Altera Corporation
Datasheet
1.EP1SGX25D.pdf
(272 pages)
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Altera Corporation
June 2006
Pre-emphasis percentage is defined as V
differential emphasized voltage (peak-to-peak) and V
steady-state voltage (peak-to-peak).
Programmable Transmitter Termination
The programmable termination can be statically set in the Quartus II
software. The values are 100 Ω , 120 Ω , 150 Ω , and off.
setup for programmable termination.
Figure 2–9. Programmable Transmitter Termination
Receiver Path
This section describes the data path through the Stratix GX receiver (refer
to
via the following modules:
■
■
■
■
■
■
■
Receiver Input Buffer
The Stratix GX receiver input buffer supports the 1.5-V PCML I/O
standard at a rate up to 3.1875 Gbps. Additional I/O standards, LVDS,
3.3-V PCML, and LVPECL can be supported when AC coupled. The
common mode of the input buffer is 1.1 V. The receiver can support
Stratix GX-to-Stratix GX DC coupling.
Figure 2–2 on page
Input buffer
Clock Recovery Unit (CRU)
Deserializer
Pattern detector and word aligner
Rate matcher and channel aligner
8B/10B decoder
Receiver logic array interface
Programmable
Output
Driver
2–4). Data travels through the Stratix GX receiver
V
CM
Stratix GX Device Handbook, Volume 1
PP
/V
S
– 1, where V
Stratix GX Transceivers
50, 60, or 75
Figure 2–9
S
is the differential
PP
is the
shows the
2–13
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