Multicore Fixed and Floating-Point System-on-Chip
Copyright 2012 Texas Instruments Incorporated
Device Configuration
73
SPRS689D—March 2012
TMS320C6670
3.3.3 JTAG ID (JTAGID) Register Description
The JTAG ID register is a read-only register that identifies to the customer the JTAG/Device ID. For the device, the
JTAG ID register resides at address location 0x02620018. The JTAG ID Register is shown in the tables below.
Note—
The value of the VARIANT and PART NUMBER fields depend on the silicon revision being used.
See the Silicon Errata for details.
3.3.4 Kicker Mechanism (KICK0 and KICK1) Register
The Bootcfg module contains a kicker mechanism to prevent any spurious writes from changing any of the Bootcfg
MMR values. When the kicker is locked (which it is initially after power on reset) none of the Bootcfg MMRs are
writable (they are only readable). This mechanism requires two MMR writes to the KICK0 and KICK1 registers with
exact data values before the kicker lock mechanism is un-locked. See Table 3-2
‘‘Device State Control Registers’’
page 68 for the address location. Once released then all the Bootcfg MMRs having write permissions are writable
(the read only MMRs are still read only). The first KICK0 data is 0x83e70b13. The second KICK1 data is 0x95a4f1e0.
Writing any other data value to either of these kick MMRs will lock the kicker mechanism and block any writes to
Bootcfg MMRs. In order to ensure protection to all Bootcfg MMRs, software must always re-lock the kicker
mechanism after completing the MMR writes.
3.3.5 LRESETNMI PIN Status (LRSTNMIPINSTAT) Register
The LRSTNMIPINSTAT Register is used to latch the status of LRESET and NMI based on the setting of
CORESEL[2:0]. The LRESETNMI PIN Status Register is shown in
and described in
Figure 3-3
JTAG ID (JTAGID) Register
31
28
27
12
11
1
0
VARIANT
PART NUMBER
MANUFACTURER
LSB
R-xxxx
R-1011 1001 0100 0001
0000 0010 111b
R-1
Legend: RW = Read/Write; R = Read only; -n = value after reset
Table 3-5
JTAG ID Register Field Descriptions
Bit
Field
Value
Description
31-28
VARIANT
xxxxb
Variant value
27-12
PART NUMBER
1011 1001 0100 0001b
Part Number for boundary scan
11-1
MANUFACTURER
0000 0010 111b
Manufacturer
0
LSB
1b
This bit is read as a 1 for TMS320C6670
End of Table 3-5
Figure 3-4
LRESETNMI PIN Status Register (LRSTNMIPINSTAT)
31
20
19
18
17
16
15
4
3
2
1
0
Reserved
NMI3
NMI2
NMI1
NMI0
Reserved
LR3
LR2
LR1
LR0
R, +000000000000
R-0
R-0
R-0
R-0
R, +000000000000
R-0
R-0
R-0
R-0
Legend: R = Read only; -
n
= value after reset
Содержание TMS320C6670
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