參數資料
型號: EP9315-IBZ
廠商: Cirrus Logic Inc
文件頁數: 88/106頁
文件大?。?/td> 0K
描述: IC ARM9 SOC ENH UNIV 352PBGA
標準包裝: 40
系列: EP9
核心處理器: ARM9
芯體尺寸: 16/32-位
速度: 200MHz
連通性: EBI/EMI,EIDE,以太網,I²C,IrDA,鍵盤/觸摸屏,PCMCIA,SPI,UART/USART,USB
外圍設備: AC'97,DMA,I²S,LCD,LED,MaverickKey,POR,PWM,WDT
輸入/輸出數: 16
程序存儲器類型: ROMless
RAM 容量: 32K x 8
電壓 - 電源 (Vcc/Vdd): 1.65 V ~ 3.6 V
數據轉換器: A/D 8x12b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 352-BGA
包裝: 托盤
配用: 598-1144-ND - KIT DEVELOPMENT EP9315 ARM9
其它名稱: 598-1263
3-12
DS785UM1
Copyright 2007 Cirrus Logic
MaverickCrunch Co-Processor
EP93xx User’s Guide
3
SAT[1:0]:
Accumulator saturation mode select. These bits are set to
select the saturation mode or to disable saturation for
accumulator operations:
0X = Saturation disabled for accumulator operations
10 = Accumulator saturation enabled, bit formats 1.63 and
1.31
11 = Accumulator saturation enabled, bit format 2.62
FCC[1:0]:
FCC flags out of comparator:
00 = Operand A equals operand B
01 = Operand A less than operand B
10 = Operand A greater than operand B
11 = Operands are unordered (at least one is NaN)
V:
Overflow Flag. Indicates the overflow status of the
previous integer operation:
0 = No overflow
1 = Overflow
FWDEN:
Forwarding Enable. This bit determines whether data path
writeback results are forwarded to the data path operand
fetch stage and to the STC/MRC execute stage. When
pipeline interlocks occur due to dependencies of data
path, STC, and MRC instruction source operands on data
path results, setting this bit will improve instruction
throughput:
0 = Forwarding not enabled
1 = Forwarding enabled
Invalid:
0 = No invalid operations detected
1 = An invalid operation was performed
Denorm:
0 = No denormalized numbers have been supplied as
instruction operands
1 = A denormalized number has been supplied as an
instruction operand
RM[1:0]:
Rounding Mode. Selects IEEE 754 rounding mode:
0 0 = Round to nearest
0 1 = Round toward 0
1 0 = Round to -
1 1 = Round to +
IXE:
Inexact Trap Enable. Enables/disables software trapping
for IEEE 754 inexact exceptions:
0 = Disable software trapping for inexact exceptions
1 = Enable software trapping for inexact exceptions
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