tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 585

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

JTAG Interface
23.5 Points to Note
This section describes the points to note regarding JTAG boundary scan operations implemented in this
processor.
23.4.3
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The X2 and X1 signal pads do not comply with JTAG.
To reset the JTAG circuit, execute either of the following:
When conducting the type of test in which an IC does not need to be controlled or monitored, the
BYPASS instruction is used to form the shortest serial path bypassing an IC by connecting the bypass
register between JTDI and JTDO. The BYPASS instruction does not affect the normal operation of the
system logic implemented on a chip. Data passes through the bypass register while the BYPASS
instruction is selected, as shown in Fig. 23-11.
Initialize the JTAG circuit by asserting TRST, and then deassert TRST.
Set the TMS pin to "1," and supply TCK with more than 5 clocks.
BYPASS Instruction
TDI
Fig. 23-11 Flow of Data While the Bypass Register Is Selected
TMP19A44(rev1.3) 23-13
Bypass register
1 bit
TDO
TMP19A44
2010-04-01