Device dna read endurance – Xilinx DS610 User Manual
Page 18
Spartan-3A DSP FPGA Family: DC and Switching Characteristics
DS610 (v3.0) October 4, 2010
Product Specification
18
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
Device DNA Read Endurance
X-Ref Target - Figure 5
Figure 5: External Input Termination for LVDS, RSDS, MINI_LVDS, and PPDS I/O Standards
X-Ref Target - Figure 6
Figure 6: External Output and Input Termination Resistors for BLVDS_25 I/O Standard
X-Ref Target - Figure 7
Figure 7: External Input Resistors Required for TMDS_33 I/O Standard
Table 14: Device DNA Identifier Memory Characteristics
Symbol
Description
Minimum
Units
DNA_CYCLES
Number of READ operations or JTAG ISC_DNA read operations. Unaffected by
HOLD or SHIFT operations.
30,000,000
Read
cycles
Z
0
= 50
Ω
Z
0
= 50
Ω
100
Ω
DS529-3_09_020107
a) Input-only differential pairs or pairs not using DIFF_TERM=Yes constraint
Z
0
= 50
Ω
Z
0
= 50
Ω
b) Differential pairs using DIFF_TERM=Yes constraint
DIFF_TERM=No
DIFF_TERM=Yes
LVDS_33,
MINI_LVDS_33,
RSDS_33,
PPDS_33
LVDS_33, LVDS_25,
MINI_LVDS_33,
MINI_LVDS_25,
RSDS_33, RSDS_25,
PPDS_33, PPDS_25
CAT16-PT4F4
Part Number
/ th of Bourns
14
V
CCO
=
3.3V
LVDS_25,
MINI_LVDS_25,
RSDS_25,
PPDS_25
V
CCO
=
2.5V
LVDS_33,
MINI_LVDS_33,
RSDS_33,
PPDS_33
V
CCO
=
3.3V
LVDS_25,
MINI_LVDS_25,
RSDS_25,
PPDS_25
V
CCO
=
2.5V
No V
CCO
Restrictions
R
LVDS_33,
MINI_LVDS_33,
RSDS_33,
PPDS_33
V
CCO
=
3.3V
LVDS_25,
MINI_LVDS_25,
RSDS_25,
PPDS_25
V
CCO
=
2.5V
DT
Bank 0
Bank 2
Bank 0
Bank 2
B
a
nk
3
B
a
nk
1
Bank 0 and 2
Any Bank
Z
0
= 50
Ω
Z
0
= 50
Ω
140
Ω
165
Ω
165
Ω
100
Ω
V
CCO
= 2.5V
No V
CCO
Requirement
DS529-3_07_020107
BLVDS_25
BLVDS_25
CAT16-LV4F12
Part Number
/ th of Bourns
14
CAT16-PT4F4
Part Number
/ th of Bourns
14
Bank 0
Bank 2
B
a
nk
3
B
a
nk
1
Any Bank
Bank 0
Bank 2
B
a
nk
3
B
a
nk
1
Any Bank
50
Ω
V
CCO
= 3.3V
V
CCAUX
= 3.3V
DS529-3_08_020107
DVI/HDMI cable
50
Ω
3.3V
TMDS_33
TMDS_33
Bank 0
Bank 2
Bank 0 and 2
Bank 0
Bank 2
B
a
nk
3
B
a
nk
1
Any Bank