The MPC853T is an "ethernet-only" member of the MPC866 Family. Like the MPC866, the MPC853T is a 0.18 micron version of the PowerQUICC Family and can operate up to a maximum of 100 MHz on the MPC8xx Core with a maximum of 66 MHz external bus. The MPC853T has a 1.8 V core and has a 3.3 V I/O operation with 5 V TTL compatibilty. The MPC853T Integrated Communications Controller is a versatile one-chip integrated microprocessor and peripheral combination that can be used in a variety of controller applications. The MPC853T is ideal for voice-enabled systems (TDM-based) and ethernet to ethernet applications such as line cards.
The MPC853T is a Power Architecture-based derivative of Freescale Semiconductor's Quad Integrated Communications Controller (PowerQUICC).. The CPU on the MPC853T is the MPC8xx core, a 32-bit microprocessor built on Power Architecture technology, incorporating memory management units (MMUs) and instruction and data caches.
View Block Diagram
Features
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Maximum frequency operation of the external bus is 66 MHz in 1:1 mode
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Single-issue, 32-bit core (compatible with Power Architecture technology) with 32, 32-bit general-purpose registers (GPRs)
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Up to 32-bit data bus (dynamic bus sizing for 8, 16, and 32 bits)
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32 address lines
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Memory controller (eight banks)
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General-purpose timers
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System integration unit (SIU)
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Interrupts
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Communications processor module (CPM)
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Two baud rate generators
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Two SCCs (serial communication controllers) (10BaseT Ethernet, HDLC, Transparent)
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One SMC (serial management channel)
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One SPI (serial peripheral interface)
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Fast Ethernet controller (FEC)
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Time-slot assigner (TSA)
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PCMCIA interface
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Debug interface
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1.8 V Core and 3.3 V I/O operation with 5-V TTL compatibility
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256-pin, 23*23 1.27 ball pitch (BGA) package
Note 1: Where nn = 50, 66, 100, or 133