14 register 15 – test, clock, and idle control, 14 register 15 – test, clock, and idle control -9 – Intel STRONGARM SA-1100 User Manual
Page 53

SA-1100 Developer’s Manual
5-9
Coprocessors
5.2.14
Register 15 – Test, Clock, and Idle Control
Register 15 is a write-only register. The CRm and OPC_2 fields are used to encode the following
control operations. Operation for all other values of OPC_2 and CRm is unpredictable.
Function
OPC_2
CRm
Enable odd-word loading of the linear feedback shift
register ( LFSR)
0b001
0b0001
Enable even-word loading of LFSR
0b001
0b0010
Clear LFSR
0b001
0b0100
Move LFSR to R14.abort
0b001
0b1000
Enable clock switching
0b010
0b0001
Disable clock switching
0b010
0b0010
RESERVED
0b010
0b0100
Wait for interrupt
0b010
0b1000
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