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418 SA-1110 Developer’s Manual
Boundary-Scan Test Interface
16.6.2 Intel
®
StrongARM SA-1110 Device Identification (ID)
Code Register
This register is used to read the 32-bit device identification code. No programmable supplementary
identification code is provided. When the IDCODE instruction is current, this register is selected as
the serial path between TDI and TDO. The 32-bit device identification code is loaded into the
register from its parallel inputs during the CAPTURE-DR state..
16.6.3 Intel
®
StrongARM SA-1110 Boundary-Scan (BS) Register
Purpose: The BS register consists of a serially connected set of cells around the periphery of the
device, at the interface between the core logic and the system input/output pads. This register can
be used to isolate the pins from the core logic and then drive or monitor the system pins.
Operating Modes: The BS register is selected as the register to be connected between TDI and
TDO only during the SAMPLE/PRELOAD and EXTEST instructions. Values in the BS register
are used, but are not changed, during the CLAMP instruction.
In the normal (system) mode of operation, straight-through connections between the core logic and
pins are maintained, and normal system operation is unaffected.
In TEST mode (when EXTEST is the currently selected instruction), values can be applied to the
output pins independently of the actual values on the input pins and core logic outputs. On the
SA-1110, all of the boundary-scan cells include update registers; thus, all of the pins can be
controlled in the above manner. An additional boundary-scan cell is interposed in the scan chain to
control the enabling of the data bus.
SA-1110 Device Identification (ID)
Code Register
Read-Only
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Stepping Part Number Manufacturer ID
Constant
Stepping
Stepping revision of the SA-1110
0000 = A0 stepping
0100 = B0 stepping
0101 = B1 stepping
0110 = B2 stepping
1000 = B4 stepping
1001 = B5 stepping
Part Number
Part number
1001001001100001 = SA1110
Manufacturer ID
Manufacturer ID
00000001001 = Intel Corporation
Constant
1