SCANSTA111MTX/NOPB National Semiconductor, SCANSTA111MTX/NOPB Datasheet - Page 6

• Manufacturer Part Number: SCANSTA111MTX/NOPB
• Description: IC SCAN BRIDGE MULTIDROP 48TSSOP
• Manufacturer: National Semiconductor

Specifications of SCANSTA111MTX/NOPB

• Applications: Testing Equipment
• Interface: IEEE 1149.1
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 48-TSSOP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SCANSTA111MTX

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The 'STA111 contains three distinct but coupled state-ma-
chines (see
state-machine, which is used to drive the 'STA111's scan
ports in conformance with the 1149.1 Standard. The second
is the 'STA111-selection state-machine
state-machine actually consists of three identical but inde-
pendent state-machines (see
local scan port. Each of these scan port selection state-ma-
Figure
2). The first of these is the TAP-control
FIGURE 3. State Machine for SCANSTA111 Selection Controller
Figure
4), one per 'STA111
(Figure
FIGURE 2. SCANSTA111 State Machines
3). The third
6
chines allows individual local ports to be inserted into and
removed from the 'STA111s overall scan chain.
The 'STA111 selection state-machine performs the address
matching which gives the 'STA111 its multi-drop capability.
That logic supports single-'STA111 access, multi-cast, and
broadcast. The 'STA111-selection state-machine implements
the chip's Level-1 protocol.
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