D950-CORE Datasheet, PDF (47/89 Pages) STMicroelectronics – 16-Bit Fixed Point Digital Signal Processor DSP Core

+=
Last Step of Positive MAC (PSC used for shift value)
-=
Last Step of Negative MAC (PSC used for shift value)
Figure 5.6 ALU Two-Word Operand (oper_2)
Ai = oper_2 Lj
(CCR)* P
Ai = oper_2 Rj
(CCR)* P
Ai = oper_2 Lj
(CCR)* Rj
Aj
P
,
Lk = *AXm + IXs
,
Rk = *AYn + IYr
D950-Core
*AY1 + IY3 = A1H
,
A1 = oper_2 L1
A1
,
Lj = *AX1 + IX3
*AX1 + IX3 = A1H
,
A1 = oper_2 R1
A1
,
(CCR)* is used in place of Ai when oper_2 instruction=CMPO
Rk = *AY1 + IY3
VR02018E
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