JTAG TAP Controller

Assembly

Green Printed Circuit Board and Components.JPG · Commons ↗ Report photo

Finite-state machine managing JTAG protocol state transitions and instruction/data register access.

Direct parts	3
Total parts	3
Used in	1 assembly
Class	Assembly

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Finite-state machine managing JTAG protocol state transitions and instruction/data register access. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

JTAG TAP Controller parts and their functions

3 top-level parts · 3 parts in total · full bill of materials below

JTAG TAP Controller parts diagram: 1 TAP controller IC, 2 instruction register, 3 data register chain. 3 parts in 3 top-level items. — JTAG TAP Controller parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	TAP Controller IC	1×	Small FPGA or dedicated ASIC implementing TAP state machine
2	Instruction Register	1×	8–16 bit instruction register selecting TAP operations
3	Data Register Chain	1×	Configurable data register chaining device scan chains

3D model

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Build & assembly graph

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Bill of materials for JTAG TAP Controller

3 top-level lines · 3 rows shown · 3 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	TAP Controller IC	jtag-debug-probe-fpga-tap	1×	1	·	part
2	Instruction Register	jtag-debug-probe-ir-register	1×	1	·	part
3	Data Register Chain	jtag-debug-probe-dr-register	1×	1	·	part

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Where the JTAG TAP controller is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Computing & Peripherals 1 JTAG Debug Probe

Used in 1 assembly

JTAG Debug Probe

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $1–$200. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳JLCPCB jlcpcb.com ↗	Shenzhen, CN	PCB fabrication	100 pcs	2–4 wks
🇨🇳PCBWay pcbway.com ↗	Shenzhen, CN	PCB fab & assembly	100 pcs	2–4 wks
🇨🇳Shennan Circuits scc.com.cn ↗	Shenzhen, CN	PCB manufacturer	100 pcs	2–4 wks
🇮🇳Shogini Technoarts shogini.com ↗	Mumbai, IN	PCB manufacturer	100 pcs	2–4 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	100 pcs	2–4 wks