Jtag Id (Jtagid) Register Description; Debugging Considerations - Texas Instruments TMS320C6474 Manual

TMS320C6474
SPRS552F – OCTOBER 2008 – REVISED JULY 2010
31 30 29 28
SRCC27 SRCC26 SRCC25 SRCC24
R/W-0 R/W-0 R/W-0 R/W-0
15 14 13 12
SRCC11 SRCC10 SRCC9 SRCC8
R/W- R/W-0 R/W-0 R/W-0
0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 3-6. IPC Acknowledgment Registers (IPCAR0-IPCAR2) Field Descriptions
Bit Field
31:4 SRCC[27:0]
3:0 Reserved
3.6

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
C6474 device, the JTAG ID register resides at address location 0x0288 0814. For the actual register bit
names and their associated bit field descriptions, see
31 28 27
VARIANT
(4-bit)
R-n
LEGEND: R = Read only; -n = value after reset
Bit Field
31:28 VARIANT
27:12 PART NUMBER
11:1 MANUFACTURER
0 LSB
3.7

Debugging Considerations

It is recommended that external connections be provided to device configuration pins. Although internal
pullup/pulldown resistors exist on these pins, providing external connectivity adds convenience to the user
in debugging and flexibility in switching operating modes.
For the internal pullup/pulldown resistors for all device pins, see
50 Device Configuration
27 26 25
SRCC23 SRCC22 SRCC21 SRCC20
R/W-0 R/W-0 R/W-0 R/W-0
11 10 9
SRCC7 SRCC6 SRCC5
R/W-0 R/W-0 R/W-0 R/W-0
Figure 3-4. IPC Acknowledgment Registers (IPCAR0-IPCAR2)
Value Description
Write:
0 No effect
1 Clear register bit
Read:
Returns current value of internal register bit
Reserved
PART NUMBER
(16-bit)
R-0000 0000 1001 0010b
Figure 3-5. JTAG ID (JTAGID) Register
Table 3-7. JTAG ID (JTAGID) Register Field Descriptions
Value Description
Variant (4-Bit) value. The value of this field depends on the silicon revision being used.
Note: the VARIANT filed may be invalid if no CLKIN1 signal is applied.
Part Number (16-Bit) value. C6474 value: 0000 0000 1001 0010b.
Manufacturer (11-Bit) value. C6474 value: 000 0001 0111b.
LSB value. This bit is read as 1 for C6474.
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24 23 22 21
SRCC19 SRCC18 SRCC17
R/W-0 R/W-0 R/W-0
8 7 6 5
SRCC4 SRCC3 SRCC2 SRCC1
R/W-0 R/W-0 R/W-0
Figure 3-5 and
12 11
Table
Copyright © 2008–2010, Texas Instruments Incorporated
:TMS320C6474
20 19 18
SRCC16 SRCC15 SRCC14 SRCC13
R/W-0 R/W-0 R/W-0 R/W-0
4 3
SRCC0 Reserved
R/W-0 R-0000
Table 3-7.
MANUFACTURER
(11-bit)
R-000 0001 0111b
2-5.
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17 16
SRCC12
R/W-0
0
1 0
LSB
R-1