Datasheet

SCANSTA112
SNLS161I –DECEMBER 2002–REVISED APRIL 2013 www.ti.com
AC TIMING CHARACTERISTICS: SCAN BRIDGE MODE (continued)
Over recommended operating supply voltage and temperature ranges unless otherwise specified
(1)(2)
.
Symbol Parameter Conditions Min Max Units
t
REC
Recovery Time 1.0
ns
TCK
Bn
from TRST
Bn
t
W
Clock Pulse Width t
R
/t
F
= 1.0ns 10.0 ns
TCK
Bn
(H or L)
t
W
L Reset Pulse Width t
R
/t
F
= 1.0ns 2.5 ns
TRST
Bn
(L)
F
MAX
Maximum Clock Frequency
(3)
t
R
/t
F
= 1.0ns 25 MHz
(3) When sending vectors one-way to a target device on an LSP (such as in FPGA/PLD configuration/programming), the clock frequency
may be increased above this specification. In Scan Mode (expecting to capture returning data at the LSP), the F
MAX
must be limited to
the above specification.
AC ELECTRICAL CHARACTERISTICS: STITCHER TRANSPARENT MODE
Over recommended operating supply voltage and temperature ranges unless otherwise specified
(1)
.
Symbol Parameter Conditions Typ Max Units
t
PHL
, Propagation Delay 12.5 ns
t
PLH
TDI
B0
to TDO
B1
, TDI
B1
to TDO
B0
t
PHL
, Propagation Delay 12.5 ns
t
PLH
TDI
B0
to TDO
01
, TDI
B1
to TDO
01
t
PHL
, Propagation Delay 12.5 ns
t
PLH
TDI
LSPn
to TDO
LSPn+1
t
PHL
, Propagation Delay 12.5 ns
t
PLH
TMS
B0
to TMS
B1
, TMS
B1
to TMS
B0
t
PHL
, Propagation Delay 12.5 ns
t
PLH
TMS
B0
to TMS
(01-06)
, TMS
B1
to TMS
(01-06)
t
PHL
, Propagation Delay 12.5 ns
t
PLH
TRST
B0
to TRST
B1
, TRST
B1
to TRST
B0
t
PHL
, Propagation Delay 12.5 ns
t
PLH
TRST
B0
to TRST
(01-06)
, TRST
B1
to TRST
(01-06)
(1) R
L
= 500Ω to GND, C
L
= 50pF to GND, t
R
/t
F
= 2.5ns, Frequency = 25MHz, V
M
= 1.5V
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