tmp19a61f10xbg TOSHIBA Semiconductor CORPORATION, tmp19a61f10xbg Datasheet - Page 508

• Manufacturer Part Number: tmp19a61f10xbg
• Description: 32-bit Tx System Risc Tx19 Family
• Manufacturer: TOSHIBA Semiconductor CORPORATION

(Note 1) This register must be 32-bit accessed.
(Note 2) This register is initialized only by power-on reset. It is not initialized by a normal reset.
SEQMOD
(0xFFFF_E510)
21.2.2 DSU (EJTAG) - PROBE Interface
2) DSU probe enable/disable function
3) DSU enable (Enables use of DSU probes for debugging)
This interface is used when the DSU probe is used in debugging. This is the dedicated interface
for connection to the DSU probe. Please refer to the operation manual for the DSU probe you
are going to use for details of debugging procedures to use the DSU probe. Here, the function to
enable/disable the DSU probe in the DSU (EJTAG) mode is described.
1)
Bit Symbol
Read/Write
After reset
Function
Bit Symbol
Read/Write
After reset
Function
Bit Symbol
Read/Write
After reset
Function
Bit Symbol
Read/Write
After reset
Function
Protect function
This device allows use of on-board DSU probes for debugging. To facilitate this, the device
is implemented with a protection function to prevent easy reading of the internal flash
memory by a third party other than the authorized user. By enabling the protection function,
it becomes impossible to read the internal flash memory from a DSU probe. Use this
function together with the protection function of the internal flash memory itself as described
later.
This device allows use of on-board DSU probes for debugging operations. To facilitate this,
the device is implemented with the "DSU probe inhibit" function (hereafter referred to as the
"DSU inhibit" function) to prevent easy reading of the internal flash memory by a third
party other than the authorized user. By enabling the DSU inhibit function, use of any DSU
probe becomes impossible.
In order to prevent the DSU inhibit function from being accidentally removed by system
runaway, etc., the method to cancel the DSU inhibit function is in double protection structure
so it is necessary to set SEQMOD<DSUOFF> to "0" and also write the protect code
"0x0000_00C5" to the DSU protect control register SEQCNT to cancel the function. Then,
debugging to use a DSU probe can be allowed. While power to the device is still applied,
setting SEQMOD <SEQON> to "1" and writing "0x0000_00C5" to the SEQCNT register will
enable the protection function again.
15
23
31
7
Table 22.3 DSU Protect Mode Register
TMP19A61 (rev1.0) 22-507
14
22
30
6
13
21
29
5
Always reads "0."
12
20
28
R
4
0
Always reads "0."
Always reads "0."
R
R
R
0
0
0
11
19
27
3
10
18
26
2
TMP19A61
17
25
1
9
1: DSU disable
0: DSU disable
DSUOFF
R/W
16
24
0
1
8