TDI
E6442
TDI (Test Data In) is the serial input pin used in JTAG boundary-scan to feed test instructions and data into a device’s test access port.
All labels observed (1)
| Label | Occurrences |
|---|---|
| TDI canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T73241 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: TDI Context triple: [IEEE 1149.1 JTAG boundary-scan standard, definesSignal, TDI]
-
A.
TEC
TEC is the commonly used acronym for the Episcopal Church, a mainline Anglican Christian denomination based in the United States.
-
B.
TNT
TNT is an American cable television network known for airing sports, movies, and original drama programming.
-
C.
KIAD
KIAD is the ICAO airport code for Washington Dulles International Airport, a major international air travel hub serving the Washington, D.C. metropolitan area.
-
D.
DDI
DDI is the abbreviation for the Directorate of Digital Innovation, a CIA directorate focused on advancing the agency’s digital and cyber capabilities.
-
E.
DELTA
DELTA is the radio callsign used by pilots and air traffic control to identify and communicate with Delta Air Lines flights.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: TDI Target entity description: TDI (Test Data In) is the serial input pin used in JTAG boundary-scan to feed test instructions and data into a device’s test access port.
-
A.
TEC
TEC is the commonly used acronym for the Episcopal Church, a mainline Anglican Christian denomination based in the United States.
-
B.
TNT
TNT is an American cable television network known for airing sports, movies, and original drama programming.
-
C.
KIAD
KIAD is the ICAO airport code for Washington Dulles International Airport, a major international air travel hub serving the Washington, D.C. metropolitan area.
-
D.
DDI
DDI is the abbreviation for the Directorate of Digital Innovation, a CIA directorate focused on advancing the agency’s digital and cyber capabilities.
-
E.
DELTA
DELTA is the radio callsign used by pilots and air traffic control to identify and communicate with Delta Air Lines flights.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
JTAG signal
ⓘ
test access port pin ⓘ |
| abbreviationOf | Test Data In ⓘ |
| chainPosition | first JTAG input of a device in a scan chain ⓘ |
| clockedBy | TCK ⓘ |
| connectedTo | TDO of previous device in JTAG chain ⓘ |
| dataDirection | input ⓘ |
| dataPath | feeds serial scan path inside device ⓘ |
| definedIn | IEEE 1149.1 standard ⓘ |
| directionRelativeToDevice | from external JTAG controller into device ⓘ |
| electricalType | digital input pin ⓘ |
| fullName | Test Data In ⓘ |
| function |
serial input of test data
ⓘ
serial input of test instructions ⓘ |
| logicalLevel | binary ⓘ |
| partOf | JTAG test access port interface ⓘ |
| relatedSignal |
TCK
ⓘ
TDO ⓘ TMS ⓘ TRST ⓘ |
| requires | proper termination in multi-device chains ⓘ |
| requiresComplianceWith | JTAG timing specifications ⓘ |
| roleInTAP | input pin to the test access port ⓘ |
| sampledOn | TCK rising edge ⓘ |
| signalType | serial ⓘ |
| usedDuring |
boundary-scan testing
ⓘ
debug operations via JTAG ⓘ in-system programming ⓘ |
| usedFor |
shifting data into data registers
ⓘ
shifting data into instruction register ⓘ |
| usedIn |
IEEE 1149.1 boundary-scan
ⓘ
linked to:
IEEE 1149.1 JTAG boundary‑scan standard
JTAG ⓘ
linked to:
IEEE 1149.1 JTAG boundary‑scan standard
|
| voltageDomain | device I/O supply domain ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: TDI Description of subject: TDI (Test Data In) is the serial input pin used in JTAG boundary-scan to feed test instructions and data into a device’s test access port.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
IEEE 1149.1 JTAG boundary‑scan standard