AFS090 datasheet(174/334 Pages) MICROSEMI

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Device Architecture

2- 15 8

R e v isio n 2

I/O Software Support

In the Fusion development software, default settings have been defined for the various I/O standards

supported. Changes can be made to the default settings via the use of attributes; however, not all I/O

attributes are applicable for all I/O standards. Table 2-84 and Table 2-85 list the valid I/O attributes that

can be manipulated by the user for each I/O standard.

Single-ended I/O standards in Fusion support up to five different drive strengths.

Table 2-84 • Fusion Standard and Advanced I/O Attributes vs. I/O Standard Applications

I/O Standards

SLEW

(output

only)

OUT_DRIVE

(output only)

SKEW

(all macros

with OE)*

RES_PULL

OUT_LOAD

(output only) COMBINE_REGISTER

LVTTL/LVCMOS 3.3 V

✓✓

✓

LVCMOS 2.5 V

✓✓

✓

LVCMOS 2.5/5.0 V

✓✓

✓

LVCMOS 1.8 V

✓✓

✓

LVCMOS 1.5 V

✓✓

✓

PCI (3.3 V)

✓✓

✓

PCI-X (3.3 V)

✓✓

✓

LVDS, BLVDS, M-LVDS

✓✓

LVPECL

✓

Note:

*This feature does not apply to the standard I/O banks, which are the north I/O banks of AFS090 and AFS250

devices

AFS090 数据表(PDF) 174 Page - Microsemi Corporation

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