C8051F124-TB Silicon Laboratories Inc, C8051F124-TB Datasheet - Page 31
C8051F124-TB
Manufacturer Part Number
C8051F124-TB
Description
BOARD PROTOTYPING W/C8051F124
Manufacturer
Silicon Laboratories Inc
Specifications of C8051F124-TB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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1.4.
The C8051F120/1/2/3 and C8051F130/1/2/3 devices include a multiply and accumulate engine which can
be used to speed up many mathematical operations. MAC0 contains a 16-by-16 bit multiplier and a 40-bit
adder, which can perform integer or fractional multiply-accumulate and multiply operations on signed input
values in two SYSCLK cycles. A rounding engine provides a rounded 16-bit fractional result after an addi-
tional (third) SYSCLK cycle. MAC0 also contains a 1-bit arithmetic shifter that will left or right-shift the con-
tents of the 40-bit accumulator in a single SYSCLK cycle.
16 x 16 MAC (Multiply and Accumulate) Engine
MAC0OVR
1 bit Shift
MAC0CF
MAC0AH
MAC0 A Register
MAC0FM
MAC0ACC3
Figure 1.10. MAC0 Block Diagram
MAC0AL
MAC0RNDH
16 x 16 Multiply
MAC0 Rounding Register
MAC0 Accumulator
Rounding Engine
MAC0ACC2
40 bit Add
Rev. 1.4
MAC0BH
MAC0 B Register
MAC0RNDL
C8051F120/1/2/3/4/5/6/7
MAC0ACC1
MAC0BL
C8051F130/1/2/3
1
0
MAC0MS
MAC0STA
Flag Logic
0
MAC0ACC0
31
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