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您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371042 > MC68302CRC20 (MOTOROLA INC) Integrated Multiprotocol Processor User’s Manual PDF資料下載

型號：	MC68302CRC20
廠商：	MOTOROLA INC
元件分類：	微控制器/微處理器
英文描述：	Integrated Multiprotocol Processor User’s Manual
中文描述：	RISC PROCESSOR, CPGA132
封裝：	PGA-132
文件頁數(shù)：	226/480頁
文件大小：	1815K
代理商：	MC68302CRC20

Communications Processor (CP)

MC68302 USER’S MANUAL

DSOH—DDCMP SOH Register

The 8-bit DSOH register is used to synchronize data messages by the DDCMP controller.

When the DDCMP controller is not in hunt mode (byte synchronization is now estab-

lished), it searches for the SOH character to start processing data messages. The DDC-

MP controller transfers the header and the data fields of the message to the buffer, checks

the header and data CRCs, counts the data field up to the value contained in the header

byte count field, and compares the header address field against the user-defined address-

es. The DSOH register is a memory-mapped read-write register.

DENQ—DDCMP ENQ Register

The 8-bit DENQ register is used to synchronize control messages by the DDCMP control-

ler. When the DDCMP controller is not in hunt mode (byte synchronization is established),

it searches for the ENQ character to start processing control messages. The DDCMP con-

troller transfers the message to the buffer, checks the CRC, and compares the message

address field against the user-defined addresses. The DENQ register is a memory-

mapped read-write register.

DDLE—DDCMP DLE Register

The 8-bit DDLE register is used to synchronize maintenance messages by the DDCMP con-

troller. When the DDCMP controller is not in hunt mode (byte synchronization is estab-

lished), it searches for the DLE character to start processing the maintenance messages.

The DDCMP controller transfers the header and the data fields of the message to the buffer,

checks the header and data CRCs, counts the data field up to the value contained in the

header byte count field, and compares the header address field against the user-defined ad-

dresses. The DDLE register is a memory-mapped read-write register.

4.5.14.7 DDCMP Address Recognition.

Each DDCMP controller has five 16-bit registers to support address recognition: one mask

The DDCMP controller reads the message address from the receiver, masks it with the user-

defined DMASK bits, and then checks the result against the four address register values. A

one in DMASK indicates a bit position where a comparison should take place; a zero masks

the comparison. For 8-bit address comparison, the high byte of DMASK should be zero.

4.5.14.8 DDCMP Error-Handling Procedure

The DDCMP controller reports message reception and transmission errors using the chan-

nel BDs, the error counters, and the DDCMP event register. The modem interface lines can

also be directly monitored with the SCC status register.

Transmission errors:

1. Transmitter Underrun. When this error occurs, the channel terminates buffer transmis-

sion, closes the buffer, sets the underrun (UN) bit in the BD, and generates the trans-

mit error (TXE) interrupt (if enabled). The channel will resume transmission after the

reception of the RESTART TRANSMIT command. The FIFO size is three bytes.

相關(guān)PDF資料	PDF描述
MC68302RC16	Integrated Multiprotocol Processor User’s Manual
MC6802	Microprocessor With Clock and Oprtional RAM
MC68B02P	Microprocessor With Clock and Oprtional RAM
MC68B02S	Microprocessor With Clock and Oprtional RAM
MC6802P	Microprocessor With Clock and Oprtional RAM

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
MC68302CRC20C	功能描述:微處理器 - MPU 68K INTGR COM PROC DMA RoHS:否制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68302EH16C	功能描述:微處理器 - MPU 68K INTGR COM PROC DMA RoHS:否制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68302EH16C	制造商:Freescale Semiconductor 功能描述:32-Bit Microcontroller IC
MC68302EH16CB1	功能描述:微處理器 - MPU 68K INTGR COM PROC DMA RoHS:否制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68302EH16CR2	功能描述:微處理器 - MPU 68K INTGR COM PROC DMA RoHS:否制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324

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