Chapter 7: High-Speed Differential Interfaces in the Cyclone III Device Family
High-Speed I/O Standards Support
7–7
lists the numbers of differential channels that can be migrated in
Cyclone III LS devices.
Table 7–4. Cyclone III LS Devices Migratable Differential Channels
Package
Type
U484
Migratable Channels
Migration between Devices
User I/O
EP3CLS70 and EP3CLS100
EP3CLS70 and EP3CLS100
EP3CLS70 and EP3CLS150
F484
EP3CLS70 and EP3CLS200
EP3CLS100 and EP3CLS150
EP3CLS100 and EP3CLS200
EP3CLS150 and EP3CLS200
EP3CLS70 and EP3CLS100
EP3CLS70 and EP3CLS150
F780
EP3CLS70 and EP3CLS200
EP3CLS100 and EP3CLS150
EP3CLS100 and EP3CLS200
EP3CLS150 and EP3CLS200
Note to
(1) The migratable differential channels for Cyclone III devices are not directly migratable to Cyclone III LS devices
and vice versa.
Clock
Input
8
8
8
8
8
8
8
8
8
8
8
8
8
Clock
Output
4
4
4
4
4
4
4
4
4
4
4
4
4
Total
113
113
83
83
83
83
87
181
181
181
181
181
181
101
101
71
71
71
71
75
169
169
169
169
169
169
High-Speed I/O Standards Support
This section provides information about the high-speed I/O standards supported in
the Cyclone III device family.
LVDS I/O Standard Support in the Cyclone III Device Family
The LVDS I/O standard is a high-speed, low-voltage swing, low power, and general
purpose I/O interface standard. The Cyclone III device family meets the
ANSI/TIA/EIA-644 standard with the following exceptions:
■
The maximum differential output voltage (V
OD
) is increased to 600 mV. The
maximum V
OD
for ANSI specification is 450 mV.
The input voltage range is reduced to the range of 1.0 V to 1.6 V, 0.5 V to 1.85 V, or
0 V to 1.8 V based on different frequency ranges. The ANSI/TIA/EIA-644
specification supports an input voltage range of 0 V to 2.4 V.
■
f
For more information about the LVDS I/O standard electrical specifications in the
Cyclone III device family, refer to the
and
chapters.
December 2011
Altera Corporation
Cyclone III Device Handbook
Volume 1
ALTERA [ ALTERA CORPORATION ]
