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TCC76x
Specification Rev. 0.07
February 23, 2005
32-bit RISC Microprocessor for Digital Media Player
BOOTING PROCEDURE
Preliminary
20-7
20.6 Development mode (BM == 101)
To ease the effort for starting development with the TCC76x, the TCC76x provides
development mode in booting. In this mode, JTAG and SDRAM interface are
enabled and set protection unit of the TCC76x appropriately.
The Table 20.3 describes the region setting in this mode.
Table 20.3 Region Settings in Development Mode
Region #
Start
End
I Cache D Cache Buffer
Protection
0
0x00000000
0xFFFFFFFF
Disabled
Disabled
Disabled
Full Access
1
0x20000000
0x3FFFFFFF
Disabled
Disabled
Disabled
Full Access
2
0x40000000
0x4FFFFFFF
Disabled
Disabled
Disabled
Full Access
3
0x50000000
0x5FFFFFFF
Disabled
Disabled
Disabled
Full Access
4
0x60000000
0x6FFFFFFF
Disabled
Disabled
Disabled
Full Access
5
0x70000000
0x7FFFFFFF
Disabled
Disabled
Disabled
Full Access
6
0x80000000
0xFFFFFFFF
Disabled
Disabled
Disabled
Full Access
7
0x3000F000
0x3000FFFF
Disabled
Disabled
Disabled
Full Access
*) The region of higher number has higher priority than that of other regions. So
region 7 has highest priority and region 0 has lowest priority.
After region setting finishes, it goes into a infinite loop while toggling GPIO_A[0].
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