參數(shù)資料
型號： MC68LC302PU20CT
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100
封裝： 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASITC, LQFP-100
文件頁數(shù)： 112/128頁
文件大?。?/td> 641K
代理商： MC68LC302PU20CT
Applications
MOTOROLA
MC68EN302 REFERENCE MANUAL
6-5
6.2.7 RET_Cnt:
The RC field in the transmit buffer descriptor is the retry count (bits 5-2 of the most significant
long word). If the RL bit is also set (bit 6) then the RC bits have no meaning since the retry
limit has been exceeded.
6.2.8 MFLR:
The maximum frame length is set in MC68EN302 hardware to 1518.
6.2.9 MINFLR:
The minimum frame length is set in MC68EN302 hardware to 64.
6.2.10 MAXD1, MAXD2:
These operations are covered by the maximum frame length being automatically set at 1518
bytes. This is not programmable in the MC68EN302.
6.2.11 MAX_b:
The MC68EN302 supports buffer descriptor options ranging from 8 Tx and 120 RX buffer
descriptors to 64 TX and 64 RX buffer descriptors.
6.2.12 GADDR1-4 / PADDR_HML / IADDR1-4:
AR_CNTL provides the address filtering. Options in the MC68EN302 are either 64 perfect
address matches or 62 perfect address matches with address filtering via a hash routine.
6.2.13 P_PER:
The persistance is not programmable on the MC68EN302 but rather is a specific value set
in the MC68EN302 hardware.
6.2.14 RFBD_ptr/TFBD_ptr/TLBD_ptr:
Buffer descriptors in the MC68EN302 are placed at MOBAR+$C00 through MOBAR+$FFF.
The TFBD_ptr is always at MOBAR+$C00.
The TLBD_ptr can range from MOBAR+$C00 in a one buffer frame to MOBAR+$DFF in a
64 transmit buffer frame.
The RFBD_ptr is either at MOBAR+$C40, MOBAR+$C80, MOBAR+$D00 or
MOBAR+$E00 depending on the setting of the BDSIZE bits.
6.2.15 TX_len:
The TX frame length counter is part of the data length field in the buffer descriptor. To come
up with the total tx frame length the user must keep track of the data length in the buffer
descriptors belonging to that frame.
相關(guān)PDF資料
PDF描述
MC68EN302PV25BT 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP144
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68LC302PU20VCT 功能描述:IC MPU NETWORK 20MHZ 100-LQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:M683xx 標(biāo)準(zhǔn)包裝:2 系列:MPC8xx 處理器類型:32-位 MPC8xx PowerQUICC 特點:- 速度:133MHz 電壓:3.3V 安裝類型:表面貼裝 封裝/外殼:357-BBGA 供應(yīng)商設(shè)備封裝:357-PBGA（25x25） 包裝:托盤
MC68LC302PU25CT 功能描述:微處理器 - MPU 25MHz 2.5MIPS 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(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68LK332ACAG16 功能描述:32位微控制器 - MCU 32BIT MCU 2KRAM TPU QSM RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
MC68LK332ACAG16 制造商:Freescale Semiconductor 功能描述:Microcontroller
MC68LK332ACEH16 功能描述:32位微控制器 - MCU 32BIT MCU 2KRAM TPU QSM RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
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