Chapter 7: High-Speed Differential Interfaces in the Cyclone III Device Family
7–7
High-Speed I/O Standards Support
Table 7–4 lists the numbers of differential channels that can be migrated in
Cyclone III LS devices.
(1)
Table 7–4. Cyclone III LS Devices Migratable Differential Channels
Migratable Channels
Package
Type
Migration between Devices
Clock
Input
Clock
Output
User I/O
Total
U484
EP3CLS70 and EP3CLS100
EP3CLS70 and EP3CLS100
EP3CLS70 and EP3CLS150
EP3CLS70 and EP3CLS200
EP3CLS100 and EP3CLS150
EP3CLS100 and EP3CLS200
EP3CLS150 and EP3CLS200
EP3CLS70 and EP3CLS100
EP3CLS70 and EP3CLS150
EP3CLS70 and EP3CLS200
EP3CLS100 and EP3CLS150
EP3CLS100 and EP3CLS200
EP3CLS150 and EP3CLS200
101
101
71
8
8
8
8
8
8
8
8
8
8
8
8
8
4
4
4
4
4
4
4
4
4
4
4
4
4
113
113
83
71
83
F484
71
83
71
83
75
87
169
169
169
169
169
169
181
181
181
181
181
181
F780
Note to Table 7–4:
(1) The migratable differential channels for Cyclone III devices are not directly migratable to Cyclone III LS devices
and vice versa.
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 (VOD) is increased to 600 mV. The
maximum VOD 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 Cyclone III Device Data Sheet and Cyclone III LS
Device Data Sheet chapters.
December 2011 Altera Corporation
Cyclone III Device Handbook
Volume 1
ALTERA [ ALTERA CORPORATION ]
