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MPC8280 Datasheet(PDF) 5 Page - Freescale Semiconductor, Inc |
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MPC8280 Datasheet(HTML) 5 Page - Freescale Semiconductor, Inc |
5 / 80 page MPC8280 PowerQUICC II™ Family Hardware Specifications, Rev. 1.7 Freescale Semiconductor 5 Overview — Uses the local bus signals, removing need for additional pins • System interface unit (SIU) — Clock synthesizer — Reset controller — Real-time clock (RTC) register — Periodic interrupt timer — Hardware bus monitor and software watchdog timer — IEEE 1149.1 JTAG test access port • 12-bank memory controller — Glueless interface to SRAM, page mode SDRAM, DRAM, EPROM, Flash and other user- definable peripherals — Byte write enables and selectable parity generation — 32-bit address decodes with programmable bank size — Three user-programmable machines, general-purpose chip-select machine, and page-mode pipeline SDRAM machine — Byte selects for 64-bus width (60x) and byte selects for 32-bus width (local) — Dedicated interface logic for SDRAM • CPU core can be disabled and the device can be used in slave mode to an external core • Communications processor module (CPM) — Embedded 32-bit communications processor (CP) uses a RISC architecture for flexible support for communications protocols — Interfaces to G2_LE core through an on-chip 32-Kbyte dual-port data RAM, an on-chip 32-Kbyte dual-port instruction RAM and DMA controller — Serial DMA channels for receive and transmit on all serial channels — Parallel I/O registers with open-drain and interrupt capability — Virtual DMA functionality executing memory-to-memory and memory-to-I/O transfers — Three fast communications controllers supporting the following protocols: – 10/100-Mbit Ethernet/IEEE 802.3 CDMA/CS interface through media independent interface (MII) or reduced media independent interface (RMII) – ATM—Full-duplex SAR protocols at 155 Mbps, through UTOPIA interface, AAL5, AAL1, AAL0 protocols, TM 4.0 CBR, VBR, UBR, ABR traffic types, up to 64 K external connections (no ATM support for the MPC8270) – Transparent – HDLC—Up to T3 rates (clear channel) – FCC2 can also be connected to the TC layer (MPC8280 only) — Two multichannel controllers (MCCs) (one MCC on the MPC8270) – Each MCC handles 128 serial, full-duplex, 64-Kbps data channels. Each MCC can be split into four subgroups of 32 channels each. – Almost any combination of subgroups can be multiplexed to single or multiple TDM interfaces up to four TDM interfaces per MCC |
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