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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

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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