ep1agx50d Altera Corporation, ep1agx50d Datasheet - Page 18

• Manufacturer Part Number: ep1agx50d
• Description: Arria Gx Device Data Sheet
• Manufacturer: Altera Corporation

Transceivers
2–10
Arria GX Device Handbook, Volume 1
f
Serializer (Parallel-to-Serial Converter)
The serializer block clocks in 8- or 10-bit encoded data from the 8B/10B
encoder using the low-speed parallel clock and clocks out serial data
using the high-speed serial clock from the central or local clock divider
blocks. The serializer feeds the data LSB to MSB to the transmitter output
buffer.
Figure 2–7
Figure 2–7. Serializer
Transmitter Buffer
The Arria GX transceiver buffers support the 1.2- and 1.5-V PCML I/O
standard at rates up to 3.125 Gbps. The common mode voltage (V
the output driver may be set to 600 or 700 mV.
Refer to the
Arria GX Device Handbook.
The output buffer, as shown in
high-speed data serializer and consists of a programmable output driver,
a programmable pre-emphasis circuit, and OCT circuitry.
Local Clock
Central /
Divider
From 8B/10B
CMU
Encoder
shows the serializer block diagram.
Arria GX Transceiver Architecture
High-speed serial clock
Low-speed parallel clock
10
Figure
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
2–8, is directly driven by the
chapter in volume 2 of the
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Altera Corporation
To Transmitter
Output Buffer
May 2008
CM
) of