XPC823ZT66B2

Features

• The following list summarizes the key MPC860
• features:
• Embedded single-issue, 32-bit MPC8xx core (implementing the PowerPC architecture) with thirty-two 32-bit general-purpose registers (GPRs)
• — The core performs branch prediction with conditional prefetch, without conditional execution
• — 4- or 8-Kbyte data cache and 4- or 16-Kbyte instruction cache (see Table 1)
• – 16-Kbyte instruction caches are four-way, set-associative with 256 sets;
• 4-Kbyte instruction caches are two-way, set-associative with 128 sets.
• – 8-Kbyte data caches are two-way, set-associative with 256 sets; 4-Kbyte data caches are two-way, set-associative with 128 sets.
• – Cache coherency for both instruction and data caches is maintained on 128-bit (4-word) cache blocks.
• – Caches are physically addressed, implement a least recently used (LRU) replacement algorithm, and are lockable on a cache block basis.
• — Instruction and data caches are two-way, set-associative, physically addressed, LRU replacement, and lockable on-line granularity.
• — MMUs with 32-entry TLB, fully associative instruction, and data TLBs
• — MMUs support multiple page sizes of 4, 16, and 512 Kbytes, and 8 Mbytes; 16 virtual address spaces and 16 protection groups
• — Advanced on-chip-emulation debug mode
• Up to 32-bit data bus (dynamic bus sizing for 8, 16, and 32 bits)
• 32 address lines
• Operates at up to 80 MHz
• Memory controller (eight banks)
• — Contains complete dynamic RAM (DRAM) controller
• — Each bank can be a chip select or RASto support a DRAM bank
• — Up to 15 wait states programmable per memory bank
• — Glueless interface to DRAM, SIMMS, SRAM, EPROM, Flash EPROM, and other memory devices.
• — DRAM controller programmable to support most size and speed memory interfaces
• — Four CASlines, four WElines, one OEline
• — Boot chip-select available at reset (options for 8-, 16-, or 32-bit memory)
• — Variable block sizes (32 Kbyte to 256 Mbyte)
• — Selectable write protection
• — On-chip bus arbitration logic
• General-purpose timers
• — Four 16-bit timers or two 32-bit timers
• — Gate mode can enable/disable counting
• — Interrupt can be masked on reference match and event capture
• System integration unit (SIU)
• — Bus monitor
• — Software watchdog
• — Periodic interrupt timer (PIT)
• — Low-power stop mode
• — Clock synthesizer
• — Three parallel I/O registers with open-drain capability
• Four baud-rate generators (BRGs)
• — Independent (can be connected to any SCC or SMC)
• — Allow changes during operation
• — Autobaud support option
• Four serial communications controllers (SCCs)
• — Ethernet/IEEE 802.3 optional on SCC1–4, supporting full 10-Mbps operation (available only on specially programmed devices).
• — HDLC/SDLC(all channels supported at 2 Mbps)
• — HDLC bus (implements an HDLC-based local area network (LAN))
• — Asynchronous HDLC to support PPP (point-to-point protocol)
• — AppleTalk
• — Universal asynchronous receiver transmitter (UART)
• — Synchronous UART
• — Serial infrared (IrDA)
• — Binary synchronous communication (BISYNC)
• — Totally transparent (bit streams)
• — Totally transparent (frame based with optional cyclic redundancy check (CRC))
• Two SMCs (serial management channels)
• — UART
• — Transparent
• — General circuit interface (GCI) controller
• — Can be connected to the time-division multiplexed (TDM) channels
• One SPI (serial peripheral interface)
• — Supports master and slave modes
• — Supports multimaster operation on the same bus
• One I2C (inter-integrated circuit) port
• — Supports master and slave modes
• — Multiple-master environment support
• Time-slot assigner (TSA)
• — Allows SCCs and SMCs to run in multiplexed and/or non-multiplexed operation
• — Supports T1, CEPT, PCM highway, ISDN basic rate, ISDN primary rate, user defined
• — 1- or 8-bit resolution
• — Allows independent transmit and receive routing, frame synchronization, clocking
• — Allows dynamic changes
• — Can be internally connected to six serial channels (four SCCs and two SMCs)
• Parallel interface port (PIP)
• — Centronics interface support
• — Supports fast connection between compatible ports on the MPC860 or the MC68360
• PCMCIA interface
• — Master (socket) interface, release 2.1 compliant
• — Supports two independent PCMCIA sockets
• — Eight memory or I/O windows supported
• Low power support
• — Full on—all units fully powered
• — Doze—core functional units disabled, except time base decrementer, PLL, memory controller, RTC, and CPM in low-power standby
• — Sleep—all units disabled, except RTC and PIT, PLL active for fast wake up
• — Deep sleep—all units disabled including PLL, except RTC and PIT
• — Power down mode— all units powered down, except PLL, RTC, PIT, time base, and decrementer
• Debug interface
• — Eight comparators: four operate on instruction address, two operate on data address, and two operate on data
• — Supports conditions: =≠<>
• — Each watchpoint can generate a break-point internally
• 3.3 V operation with 5-V TTL compatibility except EXTAL and EXTCLK
• 357-pin ball grid array (BGA) package

Specifications