SN74LVT8986 Datasheet, PDF (27/51 Pages) Texas Instruments – 3.3-V LINKING ADDRESSABLE SCAN PORTS MULTIDROP-ADDRESSABLE IEEE STD 1149.1 (JTAG) TAP TRANSCEIVERS

SN54LVT8986, SN74LVT8986
3.3-V LINKING ADDRESSABLE SCAN PORTS
MULTIDROP-ADDRESSABLE IEEE STD 1149.1 (JTAG) TAP TRANSCEIVERS
SCBS759B – OCTOBER 2002 – REVISED APRIL 2003
PTCK
A9–A0
P2–P0
BYP5
BYP4–BYP0
Don’t Care
Don’t Care
Don’t Care
PTDI
Idle SEL A0P A9P SEL P0P C2P SEL Idle
CTDI
PTMS
Don’t Care
PX
SX2–SX0
Don’t Care
Don’t Care
STDI2
Don’t Care
STDI1
STDI0
Don’t Care
Don’t Care
CON2
CON1
CON0
Don’t Care
Don’t Care
Don’t Care
Don’t Care
PTDO
CTDO
STDO2
STDO1
STDO0
STMS2
STMS1
STMS0
PY
SY2
SY1
SY0
STDI2
STDI2
STDI0
A0P
A9P
P0P C2P
PTMS
PTMS
SX2 * SX0
PX
PX
Idle SEL A0P A9P SEL P0P
C2P SEL Idle STDI2
UNDETERMINED
STDI2
STDI1
STDI0
PTDI
STMS10
STMS20
STMS00
PTMS
PTMS
PTMS
SX2 * SX1 * SX0
PX
PX
PX
SELECT PROTOCOL
ACKNOWLEDGE PROTOCOL
ON
Figure 9. Linking Shadow Protocol Timing
Protocol Result = MATCH; Prior Connect Status = TAP2–ON, TAP1–OFF, TAP0–ON
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