Axcelerator Family FPGAs
Revision 18 2-19
Table 2-15, Ta b l e 2 - 1 6 , and Ta b l e 2 - 1 7 list all the available macro names differentiated by I/O standard,
type, slew rate, and drive strength.
Table 2-15 • Macros for Single-Ended I/O Standards
Standard VCCI Macro Names
LVTTL 3.3 V CLKBUF, HCLKBUF INBUF, OUTBUF,
OUTBUF_S_8, OUTBUF_S_12, OUTBUF_S_16, OUTBUF_S_24,
OUTBUF_H_8, OUTBUF_H_12, OUTBUF_H_16, OUTBUF_H_24,
TRIBUF, TRIBUF_S_8, TRIBUF_S_12, TRIBUF_S_16, TRIBUF_S_24,
TRIBUF_H_8, TRIBUF_H_12, TRIBUF_H_16, TRIBUF_H_24,
BIBUF, BIBUF_S_8, BIBUF_S_12, BIBUF_S_16, BIBUF_S_24,
BIBUF_H_8, BIBUF_H_12, BIBUF_H_16, BIBUF_H_24
3.3 V PCI 3.3 V CLKBUF_PCI, HCLKBUF_PCI, INBUF_PCI, OUTBUF_PCI,
TRIBUF_PCI, BIBUF_PCI
3.3 V PCI-X 3.3 V CLKBUF_PCI-X, HCLKBUF_PCI-X, INBUF_PCI-X, OUTBUF_PCI-X,
TRIBUF_PCI-X, BIBUF_PCI-X
LVCMOS25 2.5 V CLKBUF_LVCMOS25, HCLKBUF_LVCMOS25, INBUF_LVCMOS25,
OUTBUF_LVCMOS25, TRIBUF_LVCMOS25, BIBUF_LVCMOS25
LVCMOS18 1.8 V CLKBUF_LVCMOS18, HCLKBUF_LVCMOS18, INBUF_LVCMOS18,
OUTBUF_LVCMOS18, TRIBUF_LVCMOS18, BIBUF_LVCMOS18
LVCMOS15
(JESD8-11)
1.5 V CLKBUF_LVCMOS15, HCLKBUF_LVCMOS15, INBUF_LVCMOS15,
OUTBUF_LVCMOS15, TRIBUF_LVCMOS15, BIBUF_LVCMOS15
Table 2-16 • I/O Macros for Differential I/O Standards
Standa rd VCCI Macro Names
LVPECL 3.3 V CLKBUF_LVPECL, HCLKBUF_LVPECL, INBUF_LVPECL, OUTBUF_LVPECL
LVDS 2.5 V CLKBUF_LVDS, HCLKBUF_LVDS, INBUF_LVDS, OUTBUF_LVDS
Table 2-17 • I/O Ma cros for Voltage-Referenced I/O Standards
Standard VCCI VREF Macro Names
GTL+ 3.3 V 1.0 V CLKBUF_GTP33, HCLKBUF_GTP33, INBUF_GTP33,
OUTBUF_GTP33, TRIBUF_GTP33, BIBUF_GTP33
GTL+ 2.5 V 1.0 V CLKBUF_GTP25, HCLKBUF_GTP25, INBUF_GTP25,
OUTBUF_GTP25, TRIBUF_GTP25, BIBUF_GTP25
SSTL2 Class I 2.5 V 1.25 V CLKBUF_SSTL2_I, HCLKBUF_SSTL2_I, INBUF_SSTL2_I,
OUTBUF_SSTL2_I, TRIBUF_SSTL2_I, BIBUF_SSTL2_I
SSTL2 Class II 2.5 V 1.25 V CLKBUF_SSTL2_II, HCLKBUF_SSTL2_II, INBUF_SSTL2_II,
OUTBUF_SSTL2_II, TRIBUF_SSTL2_II, BIBUF_SSTL2_II
SSTL3 Class I 3.3 V 1.5 V CLKBUF_SSTL3_I, HCLKBUF_SSTL3_I, INBUF_SSTL3_I,
OUTBUF_SSTL3_I, TRIBUF_SSTL3_I, BIBUF_SSTL3_I
SSTL3 Class II 3.3 V 1.5 V CLKBUF_SSTL3_II, HCLKBUF_SSTL3_II, INBUF_SSTL3_II,
OUTBUF_SSTL3_II, TRIBUF_SSTL3_II, BIBUF_SSTL3_II
HSTL Class I 1.5 V 0.75 V CLKBUF_HSTL_I, HCLKBUF_HSTL_I, INBUF_HSTL_I,
OUTBUF_HSTL_I, TRIBUF_HSTL_I, BIBUF_HSTL_I