參數(shù)資料
型號(hào)： 951200201
廠商： ATMEL CORP
元件分類： 數(shù)字信號(hào)處理外設(shè)
英文描述： 40-BIT, DSP-FLOATING POINT PROCESSOR, QFP256
封裝： MQFP-256
文件頁(yè)數(shù)： 16/50頁(yè)
文件大?。?/td> 702K
代理商： 951200201
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TSC21020F
4153H–AERO–04/07
DMBANK3
Data memory bank 3 upper boundary
DMADR(1)
Copy of last data memory address
PMWAIT
Wait state and page size control for program memory
PMBANK1
Program memory bank 1 upper boundary
PMADR(1)
Copy of last program memory address
System Register
MODE1
Mode control bits for bit-reverse, alternate registers, interrupt nesting and
enable, ALU saturation, floating-point rounding mode and boundary
MODE2
Mode control bits for interrupt sensitivity, cache disable and freeze, timer
enable, and I/O flag configuration
IRPTL
Interrupt latch
IMASK
Interrupt mask
IMASKP
Interrupt mask pointer (for nesting)
ASTAT
Arithmetic status flags, bit test, I/O flag values, and compare accumulator
STKY
Sticky arithmetic status flags, circular buffer overflow flags, stack status flags
(not sticky)
USTAT1
User status register 1
USTAT2
User status register 2
Note:
1. Read-only
Refer to User's Manual for bit-level definitions of each register.
Table 6. ALU Compute Operations
Fixed-Point
Floating-Point
Rn = Rx + Ry
Fn = Fx + Fy
Rn = Rx - Ry
Fn = Fx - Fy
Rn = Rx + Ry, Rm = Rx - Ry
Fn = Fx + Fy, Fm = Fx - Fy
Rn = Rx + Ry + CI
Fn = ABS (Fx + Fy)
Rn = Rx - Ry + CI - 1
Fn = ABS (Fx - Fy)
Rn = (Rx + Ry)/2
Fn = (Fx + Fy)/2
COMP(Rx, Ry)
COMP(Fx, Fy)
Rn = -Rx
Fn = -Fx
Rn = ABS Rx
Fn = ABS Fx
Rn = PASS Rx
Fn = PASS Fx
Rn = MIN(Rx, Ry)
Fn = MIN(Fx, Fy)
Rn = MAX(Rx, Ry)
Fn = MAX(Fx, Fy)
Table 5. Universal Registers (Continued)
Name
Function
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