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参数资料
| 型号： | MPC855TVR80D4 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 9/15页 |
| 文件大小： | 0K |
| 描述： | IC MPU POWERQUICC 80MHZ 357-PBGA |
| 标准包装： | 44 |
| 系列： | MPC8xx |
| 处理器类型： | 32-位 MPC8xx PowerQUICC |
| 速度： | 80MHz |
| 电压： | 3.3V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 357-BBGA |
| 供应商设备封装： | 357-PBGA（25x25） |
| 包装： | 托盘 |
MOTOROLA
MPC855T Communications Controller Technical Summary
3
MPC855T Key Features
– Transmission convergence (TC) function for T1/E1/ADSL lines
– Cell delineation
– Cell payload scrambling/descrambling
– Automatic idle/unassigned cell insertion/stripping
– Header error control (HEC) generation, checking, and statistics
– Glueless interface to Motorola CopperGold ADSL transceiver
— Receive VP/VC connection lookup mechanisms, including:
– Internal sequential lookup table supporting up to 32 connections
– Support for up to 64K connections using external memory via address compression or
content-addressable memory (CAM)
— Independent transmit/receive buffer descriptor ring data structures for each connection
— Interrupt report per channel using exception queue
— Supports 53-byte or up to 64-byte (expanded) ATM cells
— AAL5 segmentation and reassembly (SAR) features for segmentation
– Segment CPCS_PDU directly from system memory
– CPCS_PDU padding
– CRC32 generation
– Automatic last cell marking (in PTI eld of cell header)
– Automatic CS_UU, CPI, and LENGTH insertion in last cell
— AAL5 segmentation and reassembly (SAR) features for reassembly:
– Reassembles CPCS_PDU directly into system memory
– Removes CPCS_PDU padding
– CRC32 checking
– CS_UU, CPI, and LENGTH reporting
– CLP and congestion reporting
– Interrupts per buffer or per message
– Error reporting, including CRC, length mismatch, message abort
— AAL0 features for transmit include the following:
– Transmits user-dened cell from transmit emory buffer
– Automatic HEC generation
– Optional CRC10 insertion
— AAL0 features for receive include the following:
– Copies entire cell into receive memory buffer
– Provides interrupt per cell
– Optional CRC10 checking
Embedded MPC8xx core with 106 MIPS at 80 MHz (using Dhrystone 2.1)
— Single-issue, 32-bit version of the embedded MPC8xx core (fully compatible with the
PowerPC user instruction set architecture; refer to the Programming Environments Manual for
32-Bit Implementations of the PowerPC Architecture for more information) with 32- x 32-bit
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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| MPC855TZQP80D4 | 制造商:FREESCALE-SEMI 功能描述: |
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