参数资料
型号: TMDXEVM5515
厂商: Texas Instruments
文件页数: 151/159页
文件大小: 0K
描述: EVAL MODULE DSP FOR C55XX
标准包装: 1
类型: DSP
适用于相关产品: TMS320C55x 系列
所含物品: 板,线缆,CD,电源
产品目录页面: 718 (CN2011-ZH PDF)
其它名称: 296-25753
SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
5.21 IEEE 1149.1 JTAG
The JTAG interface is used for Boundary-Scan testing and emulation of the device.
TRST should only to be deasserted when it is necessary to use a JTAG controller to debug the device or
exercise the device's boundary scan functionality.
The device includes an internal pulldown (IPD) on the TRST pin to ensure that TRST will always be
asserted upon power up and the device's internal emulation logic will always be properly initialized. It is
also recommended that an external pulldown be added to ensure proper device operation when an
emulation or boundary scan JTAG controller is not connected to the JTAG pins. JTAG controllers from
Texas Instruments actively drive TRST high. However, some third-party JTAG controllers may not drive
TRST high but expect the use of a pullup resistor on TRST. When using this type of JTAG controller,
assert TRST to initialize the device after powerup and externally drive TRST high before attempting any
emulation or boundary scan operations. The device will not operate properly if TRST is not asserted low
during powerup.
5.21.1
JTAG ID (JTAGID) Register Descriptions
Table 5-58. JTAG ID Register
HEX ADDRESS RANGE
N/A
ACRONYM
JTAGID
REGISTER NAME
JTAG Identification Register
COMMENTS
Read-only. Provides 32-bit
JTAG ID of the device.
The JTAG ID register is a read-only register that identifies to the customer the JTAG/Device ID. The
register hex value for the device is: 0x01B8F E02F. For the actual register bit names and their associated
bit field descriptions, see Figure 5-45 and Table 5-59 .
31-28
VARIANT (4-Bit)
R-0001
27-12
PART NUMBER (16-Bit)
R-1011 1000 1111 1110
11-1
MANUFACTURER (11-Bit)
R-0000 0010 111
0
LSB
R-1
LEGEND: R = Read, W = Write, n = value at reset
Figure 5-45. JTAG ID Register Description - C5515 Register Value - 0x01B8F E02F
Copyright ? 2010–2013, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications
Product Folder Links: TMS320C5515
151
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