- 您现在的位置：买卖IC网 > Sheet目录323 > DSP56311EVM (Freescale Semiconductor)KIT EVALUATION FOR DSP56311
Enhanced Synchronous Serial Interface (ESSI)
7.4.9 Flags
Two ESSI signals (SC[1–0]) are available for use as serial I/O flags. Their operation is controlled
by the SYN, SCD[1–0], SSC1, and TE[2–1] bits in the CRB/CRA.The control bits OF[1–0] and
status bits IF[1–0] are double-buffered to and from SC[1–0]. Double-buffering the flags keeps
the flags in sync with TX and RX.
The SC[1–0] flags are available in Synchronous mode only. Each flag can be separately
programmed. The SC0 flag is enabled when transmitter 1 is disabled (TE1 = 0). The flag’s
direction is selected by the SCD0 bit. When SCD0 is set, SC0 is configured as output. When
SCD0 is cleared, SC0 is configured as input. Similarly, the SC1 flag is enabled when transmitter 2
is disabled (TE2 = 0), and the SC1 signal is not configured as the transmitter 0 drive-enabled
signal (Bit SSC1 = 0). The direction of SC1 is determined by the SCD1 bit. When SCD1 is set,
SC1 is an output flag. When SCD1 is cleared, SC1 is an input flag.
When programmed as input flags, the value of the SC[1–0] bits is latched at the same time as the
first bit of the received data word is sampled. Once the input is latched, the signal on the input
flag signal ( SC0 and SC1 ) can change without affecting the input flag. The value of SC[1–0] does
not change until the first bit of the next data word is received. When the received data word is
latched by RX, the latched values of SC[1–0] are latched by the SSISR IF[1–0] bits, respectively,
and can be read by software.
When they are programmed as output flags, the value of the SC[1–0] bits is taken from the value
of the OF[1–0] bits. The value of OF[1–0] is latched when the contents of TX transfer to the
transmit shift register. The value on SC[1–0] is stable from the time the first bit of the transmit
data word transmits until the first bit of the next transmit data word transmits. Software can
directly set the OF[1–0] values, allowing the DSP56311 to control data transmission by indirectly
controlling the value of the SC[1–0] flags.
7.5 ESSI Programming Model
The ESSI is composed of the following registers:
DSP56311 User’s Manual, Rev. 2
7-12
Freescale Semiconductor
发布紧急采购，3分钟左右您将得到回复。
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