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|  MIL-N-81604C(AS)
Appendix I
TABLE XXIII. REQUEST CODES (cont)
a.
CPO Requests - Upon initiation of a CPO request
in the ANCU-CAU interface, data shall be loaded
sequentially (VN, VE, θ T, and θ M) into the
CP-CIG registers via Data 2 and the CAU serial
data register. These data shall enter the CAU,
MSB first, in the form of three 28-bit words
in the format shown in table XXIV.
VN shall be loaded into CP-CIG register no. 1,
VE shall be loaded into CP-CIG register no. 2,
and
shall be loaded into CP-CIG register
no. 3. These data shall remain in the CP-CIG
registers until updated from the ANCU (10 times
per second minimum) or requested by the CP
(20 times per second maximum). Upon initiation
of the CP message request signal, the CAU shall
respond within 600 microseconds with a 64-bit
message gate to the CP along with 64 bits of
data transmitted in sequence, MSB first, from
CP-CIG data register no. 1, 2, and 3. The data
shall be transmitted in the format shown in
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