收藏本站
Core Configuration
Table 4-2. Status Register Bit Definitions (Continued)
Bit Number
3
Bit Name
N
Reset Value
0
Negative
Description
Set if the MSB of the result is set; otherwise, this bit is cleared.
2
Z
0
Zero
Set if the result equals zero; otherwise, this bit is cleared.
1
V
0
Overflow
Set if an arithmetic overflow occurs in the 56-bit result; otherwise, this bit is
cleared. V indicates that the result cannot be represented in the
accumulator register (that is, the register overflowed). In Arithmetic
Saturation mode, an arithmetic overflow occurs if the Data ALU result is not
representable in the accumulator without the extension part (that is, 48-bit
accumulator or the 32-bit accumulator in Arithmetic Sixteen-bit mode).
0
C
0
Carry
Set if a carry is generated by the MSB resulting from an addition operation.
This bit is also set if a borrow is generated in a subtraction operation;
otherwise, this bit is cleared. The carry or borrow is generated from Bit 55 of
the result. The C bit is also affected by bit manipulation, rotate, and shift
instructions.
4.3.2
Operating Mode Register (OMR)
The OMR is a read/write register divided into three byte-sized units. The lowest two bytes (EOM
and COM) control the chip’s operating mode. The high byte (SCS) controls and monitors the
stack extension. The OMR control bits are shown in Figure 4-2 .
Stack Control/Status (SCS)
Extended Operating Mode (EOM)
Chip Operating Mode (COM)
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSW[1–0] SEN WRP EOV EUN XYS ATE APD ABE BRT TAS BE CDP[1–0] MS
SD
EBD MD MC
MB
MA
Reset:
0   0   0   0   0   0   0   0   0   0   0   0   0   0   1   1   0   0   0   0   *   *   *   *
*
After reset, these bits reflect the corresponding value of the mode input (that is, MODD, MODC, MODB, or MODA,
respectively).
Reserved bit. Read as zero; write to zero for future compatibility
Figure 4-2. Operating Mode Register (OMR)
The Enhanced Operating Mode (EOM) and Chip Operating Mode (COM) bytes are affected only
by processor reset and by instructions directly referencing the OMR (that is, ANDI, ORI, and
other instructions, such as MOVEC, that specify OMR as a destination). The Stack
Control/Status (SCS) byte is referenced implicitly by some instructions, such as DO, JSR, and
RTI, or directly by the MOVEC instruction. During processor reset, the chip operating mode bits
(MD, MC, MB, and MA) are loaded from the external mode select pins MODD, MODC,
MODB, and MODA respectively. Table 4-3 defines the DSP56311 OMR bits.
DSP56311 User’s Manual, Rev. 2
4-10
Freescale Semiconductor
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
DSPAUDIOEVMMB1E BOARD MOTHER DSP563XX
DSPIC30F2010 DEVELOPMENT KIT KIT DEV EMBEDDED C
DSTRM-KT-0181A DSTREAM DEBUG AND TRACE UNIT
DSUT1CSU SURGE SUPPR NETWORK W/GROUND
DTEL2 SURGE SUPPRESSOR PHONE RJ11/RJ45
DV003001 PROGRAMMER PICSTART PLUS 16C/17C
DV164035 MPLAB ICD3 IN-CIRC DEBUGGER
DV164039 KIT DEV PIC24FJ256DA210
相关代理商/技术参数
DSP56311EVMIG_D 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311EVMIG DSP56311EVM Sample Code
DSP56311EVMUM 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 Evaluation Module Hardware Reference Manual
DSP56311FACT 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 Higher performance programmable DSP for demanding voice and data applications
DSP56311UM 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 24-Bit Digital Signal Processor Users Manual
DSP56311UMAD 制造商:未知厂家 制造商全称:未知厂家 功能描述:DSP56311 Users Manual Addendum
DSP56311VF150 功能描述:数字信号处理器和控制器 - DSP, DSC 150Mhz/300MMACS 150Mhz EFCOP RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
DSP56311VF150B1 功能描述:数字信号处理器和控制器 - DSP, DSC 24 BIT DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
DSP56311VF150R2 功能描述:数字信号处理器和控制器 - DSP, DSC 24 BIT DSP RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT