參數(shù)資料
型號: ST10R272LT6
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 16-BIT, 50 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, TQFP-100
文件頁數(shù): 6/77頁
文件大?。?/td> 707K
代理商: ST10R272LT6
14/77
ST10R272L - MULTIPLY-ACCUMULATE UNIT (MAC)
5
MULTIPLY-ACCUMULATE UNIT (MAC)
The MAC is a specialized co-processor added to the ST10R272L CPU core to improve the
performance of signal processing algorithms. It includes:
a multiply-accumulate unit
an address generation unit, able to feed the mac unit with 2 operands per cycle
a repeat unit, to execute a series of multiply-accumulate instructions
New addressing capabilities enable the CPU to supply the MAC with up to 2 operands per
instruction cycle. MAC instructions: multiply, multiply-accumulate, 32-bit signed arithmetic
operations and the CoMOV transfer instruction have been added to the standard instruction
set. Full details are provided in the ‘ST10 Family Programming Manual’.
Figure 5 MAC architecture
MAC CoProcessor
dual-port
internal RAM
external
memory
program
new addressing features
IDX0
IDX1
QX0
QX1
QR0
QR1
operands
control
program code
data buses
16 x16
multiplier
40-bit ALU
shifter
MCW MAL
MRW MAH
MSW
repeat unit
40-bit accumulator
Peripheral
interface
ST10R272L CPU
1
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