Virtex-6 FPGA Data Sheet: DC and Switching Characteristics
Speed Grade
Table 58: DSP48E1 Switching Characteristics (Cont’d)
Symbol
Description
Units
-1
(XC)
-1
(XQ)
-3
-2
-1L
RSTP input to P register CLK
0.26/ 0.30/ 0.35/
0.35/ 0.43/
ns
T
/ T
DSPDCK_RSTP_PREG DSPCKD_RSTP_PREG
0.04 0.04
0.05
0.05
0.06
Combinatorial Delays from Input Pins to Output Pins
TDSPDO_{A, B}_{P, CARRYOUT}_MULT
{A, B} input to {P, CARRYOUT}
output using multiplier
3.76 4.29
3.57 4.07
1.55 1.76
1.38 1.56
5.08
4.82
2.07
1.83
5.08
4.82
2.07
1.83
5.87
5.57
2.41
2.13
ns
ns
ns
ns
TDSPDO_D_{P, CARRYOUT}_MULT
TDSPDO_{A, B}_{P, CARRYOUT}
D input to {P, CARRYOUT}
output using multiplier
{A, B} input to {P, CARRYOUT}
output not using multiplier
TDSPDO_{C, CARRYIN}_{P, CARRYOUT}
{C, CARRYIN} input to {P,
CARRYOUT} output
Combinatorial Delays from Input Pins to Cascading Output Pins
TDSPDO_{A; B}_{ACOUT; BCOUT}
{A, B} input to {ACOUT, BCOUT} 0.49 0.56
output
0.65
5.24
0.65
5.24
0.73
6.09
ns
ns
TDSPDO_{A, B}_{PCOUT, CARRYCASCOUT,
MULTSIGNOUT}_MULT
{A, B} input to {PCOUT,
CARRYCASCOUT,
MULTSIGNOUT} output using
multiplier
3.87 4.42
3.66 4.17
1.64 1.86
TDSPDO_D_{PCOUT, CARRYCASCOUT,
MULTSIGNOUT}_MULT
D input to {PCOUT,
CARRYCASCOUT,
MULTSIGNOUT} output using
multiplier
4.94
2.19
1.95
4.94
2.19
1.95
5.76
2.60
2.32
ns
ns
ns
TDSPDO_{A, B}_{PCOUT, CARRYCASCOUT, MULTSIGNOUT}
{A, B} input to {PCOUT,
CARRYCASCOUT,
MULTSIGNOUT} output not
using multiplier
TDSPDO__{C, CARRYIN}_{PCOUT,
CARRYCASCOUT,MULTSIGNOUT}
{C, CARRYIN} input to {PCOUT, 1.46 1.66
CARRYCASCOUT,
MULTSIGNOUT} output
Combinatorial Delays from Cascading Input Pins to All Output Pins
TDSPDO_{ACIN, BCIN}_{P, CARRYOUT}_MULT
TDSPDO_{ACIN, BCIN}_{P, CARRYOUT
TDSPDO_{ACIN; BCIN}_{ACOUT; BCOUT}
{ACIN, BCIN} input to {P,
CARRYOUT} output using
multiplier
3.67 4.19
1.43 1.63
4.97
1.92
4.97
1.92
5.75
2.25
ns
ns
{ACIN, BCIN} input to {P,
CARRYOUT} output not using
multiplier
{ACIN, BCIN} input to {ACOUT,
BCOUT} output
0.36 0.42
3.76 4.29
0.49
5.10
0.49
5.10
0.56
5.94
ns
ns
TDSPDO_{ACIN, BCIN}_{PCOUT, CARRYCASCOUT,
MULTSIGNOUT}_MULT
{ACIN, BCIN} input to {PCOUT,
CARRYCASCOUT,
MULTSIGNOUT} output using
multiplier
TDSPDO_{ACIN, BCIN}_{PCOUT, CARRYCASCOUT,
MULTSIGNOUT}
{ACIN, BCIN} input to {PCOUT,
CARRYCASCOUT,
MULTSIGNOUT} output not
using multiplier
1.52 1.73
1.19 1.35
2.05
1.60
2.05
1.60
2.44
1.87
ns
ns
TDSPDO_{PCIN, CARRYCASCIN, MULTSIGNIN}_
{P, CARRYOUT}
{PCIN, CARRYCASCIN,
MULTSIGNIN} input to {P,
CARRYOUT} output
DS152 (v3.6) March 18, 2014
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