Arria® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683213
Date 10/18/2023
Public
Document Table of Contents

5.10. External I/O Termination for Arria V Devices

Table 58.  External Termination Schemes for Different I/O Standards
I/O Standard External Termination Scheme
3.3 V LVTTL/3.3 V LVCMOS No external termination required
3.0 V LVVTL/3.0 V LVCMOS
3.0 V PCI
3.0 V PCI-X
2.5 V LVCMOS
1.8 V LVCMOS
1.5 V LVCMOS
1.2 V LVCMOS
SSTL-2 Class I Single-Ended SSTL I/O Standard Termination
SSTL-2 Class II
SSTL-18 Class I
SSTL-18 Class II
SSTL-15 Class I
SSTL-15 Class II
1.8 V HSTL Class I Single-Ended HSTL I/O Standard Termination
1.8 V HSTL Class II
1.5 V HSTL Class I
1.5 V HSTL Class II
1.2 V HSTL Class I
1.2 V HSTL Class II
Differential SSTL-2 Class I Differential SSTL I/O Standard Termination
Differential SSTL-2 Class II
Differential SSTL-18 Class I
Differential SSTL-18 Class II
Differential SSTL-15 Class I
Differential SSTL-15 Class II
Differential 1.8 V HSTL Class I Differential HSTL I/O Standard Termination
Differential 1.8 V HSTL Class II
Differential 1.5 V HSTL Class I
Differential 1.5 V HSTL Class II
Differential 1.2 V HSTL Class I
Differential 1.2 V HSTL Class II
LVDS LVDS I/O Standard Termination
RSDS RSDS/mini-LVDS I/O Standard Termination
Mini-LVDS
LVPECL Differential LVPECL I/O Standard Termination
SSTL-15 21 No external termination required
SSTL-135 21
SSTL-125 21
SSTL-12
HSUL-12
Differential SSTL-15 21
Differential SSTL-135 21
Differential SSTL-125 21
Differential SSTL-12
Differential HSUL-12
21 Altera recommends that you use OCT with these I/O standards to save board space and cost. OCT reduces the number of external termination resistors used.