PEB22504HT-V11 Infineon Technologies, PEB22504HT-V11 Datasheet - Page 33

• Manufacturer Part Number: PEB22504HT-V11
• Description: IC INTERFACE QUAD 100-TQFP
• Manufacturer: Infineon Technologies

Specifications of PEB22504HT-V11

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 100-LFQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PEB22504HT-V11; PEB22504HT-V11IN

3.3.2
In the QuadLIU™ a Test Access Port (TAP) controller is implemented. The essential part
of the TAP is a finite state machine (16 states) controlling the different operational modes
of the boundary scan. Both, TAP controller and boundary scan, meet the requirements
in the JTAG standard IEEE 1149.1.
Figure 7
After switching on the device (power-on), a reset signal has to be applied to TRS, which
forces the TAP controller into test logic reset state.
For normal operation without boundary scan access, the boundary reset pin TRS can be
tied to the device reset pin RES.
The boundary length is 150.
Data Sheet
TDO
TMS
TRS
TCK
TDI
Boundary Scan Unit
Block Diagram of Test Access Port and Boundary Scan
TAP controller reset
clock
test
control
data in
enable
data
out
Generation
test signal generator
finite state machine
instruction register
Clock
TAP Controller
Figure 7
33
Reset
gives an overview.
ID data out
control
bus
BD data out
BD data in
Functional Description
QuadLIU V1.1
PEB 22504
F0115
2001-02
1
2
n