參數(shù)資料
型號: P610ARM-B
廠商: Zarlink Semiconductor Inc.
英文描述: General purpose 32-bit microprocessor
中文描述: 通用32位微處理器
文件頁數(shù): 137/173頁
文件大?。?/td> 897K
代理商: P610ARM-B
Boundary-Scan Test Interface
ARM610 Data Sheet
11-3
11.3 Reset
The boundary-scan interface includes a state-machine controller (the TAP controller).
In order to force the TAP controller into the correct state after power-up of the device,
a reset pulse must be applied to the
nTRST
be used,
nTRST
must be driven LOW, and then HIGH again. If the boundary-scan
interface is not to be used, the
nTRST
pin may be tied permanently LOW. A clock on
TCK
is not needed to reset the device.
pin. If the boundary-scan interface is to
The action of reset (either a pulse or a DC level) is as follows:
System mode is selected (ie. the boundary-scan chain does
of the signals passing between the pads and the core).
not
intercept any
IDcode mode is selected. If
be clocked out of
TCK
is pulsed, the contents of the ID register will
TDO
.
11.4 Pullup Resistors
The IEEE 1149.1 standard effectively requires that
internal pullup resistors. In order to allow ARM610 to consume zero static current,
these resistors are
not
fitted to this device. Accordingly, the four inputs to the test
interface (the above three signals plus
TCK
achieve normal circuit operation.
TDI
,
TMS
, and
nTRST
should have
) must all be driven to good logic levels to
11.5 Instruction Register
The instruction register is four bits in length.
There is no parity bit. The fixed value loaded into the instruction register during the
CAPTURE-IR controller state is 0001.
11.6 Public Instructions
The following public instructions are supported:
Instruction
Binary Code
EXTEST
0000
SAMPLE/PRELOAD
0011
CLAMP
0101
HIGHZ
0111
CLAMPZ
1001
INTEST
1100
IDCODE
1110
BYPASS
1111
Table 11-1: Public instructions
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