xc3s1400an Xilinx Corp., xc3s1400an Datasheet - Page 20

• Manufacturer Part Number: xc3s1400an
• Description: Spartan-3an Fpga Family Data Sheet
• Manufacturer: Xilinx Corp.

DC and Switching Characteristics
External Termination Requirements for Differential I/O
LVDS, RSDS, MINI_LVDS, and PPDS I/O Standards
BLVDS_25 I/O Standard
TMDS_33 I/O Standard
20
Figure 7: External Input Termination for LVDS, RSDS, MINI_LVDS, and PPDS I/O Standards
Figure 8: External Output and Input Termination Resistors for BLVDS_25 I/O Standard
V
V
LVDS_33,
MINI_LVDS_33,
RSDS_33,
PPDS_33
LVDS_33,
MINI_LVDS_33,
RSDS_33,
PPDS_33
CCO
CCO
= 3.3V
= 3.3V
Figure 9: External Input Resistors Required for TMDS_33 I/O Standard
V
Any Bank
CCO
BLVDS_25
V
V
LVDS_25,
MINI_LVDS_25,
RSDS_25,
PPDS_25
LVDS_25,
MINI_LVDS_25,
RSDS_25,
PPDS_25
a) Input-only Differential Pairs or Pairs not Using DIFF_TERM=Yes Constraint
b) Differential Pairs Using DIFF_TERM=Yes Constraint
Bank 0
Bank 2
CCO
CCO
= 2.5V
= 2.5V
= 2.5V
Bank 0 and 2
V
Bank 0 and 2
CCO
TMDS_33
Bank 0
Bank 2
165Ω
165Ω
CAT16-LV4F12
Bank 0
Bank 2
1/4th of Bourns
= 3.3V
Part Number
140Ω
DVI/HDMI cable
www.xilinx.com
Z
Z
Z
Z
0
0
0
0
= 50Ω
= 50Ω
= 50Ω
= 50Ω
Z
Z
50Ω
0
0
= 50Ω
= 50Ω
1/4th of Bourns
3.3V
CAT16-PT4F4
Part Number
1/4th of Bourns
CAT16-PT4F4
Part Number
100Ω
50Ω
100Ω
DIFF_TERM=No
DIFF_TERM=Yes
V
Any Bank
TMDS_33
CCAUX
DS529-3_08_020107
Bank 0
Bank 2
Any Bank
R
BLVDS_25
No V
Bank 0
Bank 2
Any Bank
DT
= 3.3V
Bank 0
Bank 2
CCO
V
MINI_LVDS_33,
RSDS_33,
PPDS_33
LVDS_33,
CCO
Requirement
RSDS_33, RSDS_25,
PPDS_33, PPDS_25
No V
LVDS_33, LVDS_25,
MINI_LVDS_33,
MINI_LVDS_25,
DS529-3_07_080307
= 3.3V
CCO
Restrictions
DS529-3_09_080307
V
LVDS_25,
MINI_LVDS_25,
RSDS_25,
PPDS_25
DS557-3 (v3.1) June 2, 2008
CCO
= 2.5V
Product Specification
R