Freescale Semiconductor, Inc.
Advance Information
MPC862EC/D
Rev. 1.2, 8/2003
MPC862/857T/857DSL
Hardware Specifications
Freescale Semiconductor, Inc...
This document contains detailed information on power considerations, DC/AC electrical
characteristics, and AC timing specifications for the MPC862/857T/857DSL family (refer to
Table 1 for a list of devices). The MPC862P, which contains a PowerPC™ core processor, is
the superset device of the MPC862/857T/857DSL family.
This document describes pertinent electrical and physical characteristics of the MPC8245. For
functional characteristics of the processor, refer to the
MPC862 PowerQUICC Family Users
Manual
(MPC862UM/D).
This document contains the following topics:
Topic
Section 1, “Overview”
Section 2, “Features”
Section 3, “Maximum Tolerated Ratings”
Section 4, “Thermal Characteristics”
Section 5, “Power Dissipation”
Section 6, “DC Characteristics”
Section 7, “Thermal Calculation and Measurement”
Section 8, “Layout Practices”
Section 9, “Bus Signal Timing”
Section 10, “IEEE 1149.1 Electrical Specifications”
Section 11, “CPM Electrical Characteristics”
Section 12, “UTOPIA AC Electrical Specifications”
Section 13, “FEC Electrical Characteristics”
Section 14, “Mechanical Data and Ordering Information”
Section 15, “Document Revision History”
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1
Overview
The MPC862/857T/857DSL is a derivative of Motorola’s MPC860 PowerQUICC™ family of
devices. It is a versatile single-chip integrated microprocessor and peripheral combination that
can be used in a variety of controller applications and communications and networking
systems. The MPC862/857T/857DSL provides enhanced ATM functionality over that of other
ATM-enabled members of the MPC860 family.
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Features
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Table 1 shows the functionality supported by the members of the MPC862/857T/857DSL family.
Table 1. MPC862 Family Functionality
Cache
Part
Instruction
Cache
16 Kbyte
4 Kbyte
4 Kbyte
4 Kbyte
Data Cache
8 Kbyte
4 Kbyte
4 Kbyte
4 Kbyte
Ethernet
SCC
10T
Up to 4
Up to 4
1
1
10/100
1
1
1
1
4
4
1
1
1
2
2
2
1
2
SMC
MPC862P
MPC862T
MPC857T
MPC857DSL
1
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On the MPC857DSL, the SCC (SCC1) is for ethernet only. Also, the MPC857DSL does
not support the Time Slot Assigner (TSA).
2
On the MPC857DSL, the SMC (SMC1) is for UART only.
2
•
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 cache (MPC862P) is four-way, set-associative with 256 sets; 4-Kbyte
instruction cache (MPC862T, MPC857T, and MPC857DSL) is two-way, set-associative
with 128 sets.
– 8-Kbyte data cache (MPC862P) is two-way, set-associative with 256 sets; 4-Kbyte data
cache (MPC862T, MPC857T, and MPC857DSL) is 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.
— 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
The MPC862/857T/857DSL provides enhanced ATM functionality over that of the MPC860SAR.
The MPC862/857T/857DSL adds major new features available in “enhanced SAR” (ESAR) mode,
including the following:
— Improved operation, administration and maintenance (OAM) support
— OAM performance monitoring (PM) support
— Multiple APC priority levels available to support a range of traffic pace requirements
— ATM port-to-port switching capability without the need for RAM-based microcode
— Simultaneous MII (10/100Base-T) and UTOPIA (half-duplex) capability
The following list summarizes the key MPC862/857T/857DSL features:
•
2
MPC862/857T/857DSL Hardware Specifications
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Features
•
•
•
•
•
•
•
— Optional statistical cell counters per PHY
— UTOPIA level 2 compliant interface with added FIFO buffering to reduce the total cell
transmission time. (The earlier UTOPIA level 1 specification is also supported.)
— Multi-PHY support on the MPC857T
— Four PHY support on the MPC857DSL
— Parameter RAM for both SPI and I
2
C can be relocated without RAM-based microcode
— Supports full-duplex UTOPIA both master (ATM side) and slave (PHY side) operation using a
“split” bus
— AAL2/VBR functionality is ROM-resident
Up to 32-bit data bus (dynamic bus sizing for 8, 16, and 32 bits)
32 address lines
Memory controller (eight banks)
— Contains complete dynamic RAM (DRAM) controller
— Each bank can be a chip select or RAS to support a DRAM bank
— Up to 30 wait states programmable per memory bank
— Glueless interface to Page mode/EDO/SDRAM, SRAM, EPROMs, flash EPROMs, and other
memory devices.
— DRAM controller programmable to support most size and speed memory interfaces
— Four CAS lines, four WE lines, one OE line
— Boot chip-select available at reset (options for 8-, 16-, or 32-bit memory)
— Variable block sizes (32 Kbyte–256 Mbyte)
— Selectable write protection
— On-chip bus arbitration logic
General-purpose timers
— Four 16-bit timers cascadable to be two 32-bit timers
— Gate mode can enable/disable counting
— Interrupt can be masked on reference match and event capture
Fast Ethernet controller (FEC)
— Simultaneous MII (10/100Base-T) and UTOPIA operation when using the UTOPIA
multiplexed bus.
System integration unit (SIU)
— Bus monitor
— Software watchdog
— Periodic interrupt timer (PIT)
— Low-power stop mode
— Clock synthesizer
— Decrementer, time base, and real-time clock (RTC) from the PowerPC architecture
— Reset controller
— IEEE 1149.1 test access port (JTAG)
Interrupts
— Seven external interrupt request (IRQ) lines
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MPC862/857T/857DSL Hardware Specifications
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3
Features
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•
•
•
•
•
— 12 port pins with interrupt capability
— The MPC862P and MPC862T have 23 internal interrupt sources; the MPC857T and
MPC857DSL have 20 internal interrupt sources
— Programmable priority between SCCs (MPC862P and MPC862T)
— Programmable highest priority request
Communications processor module (CPM)
— RISC controller
— Communication-specific commands (for example,
GRACEFUL STOP TRANSMIT
,
ENTER HUNT
MODE
, and
RESTART TRANSMIT
)
— Supports continuous mode transmission and reception on all serial channels
— Up to 8-Kbytes of dual-port RAM
— The MPC862P and MPC862T have 16 serial DMA (SDMA) channels; the MPC857T and
MPC857DSL have 10 serial DMA (SDMA) channels
— Three parallel I/O registers with open-drain capability
Four baud rate generators
— Independent (can be connected to any SCC or SMC)
— Allow changes during operation
— Autobaud support option
The MPC862P and MPC862T have four SCCs (serial communication controller) The MPC857T
and MPC857DSL have one SCC, SCC1; the MPC857DSL supports ethernet only
— Serial ATM capability on all SCCs
— Optional UTOPIA port on SCC4
— Ethernet/IEEE 802.3 optional on SCC1–4, supporting full 10-Mbps operation
— HDLC/SDLC
— 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) (The MPC857DSL has one SMC, SMC1 for UART)
— UART
— Transparent
— General circuit interface (GCI) controller
— Can be connected to the time-division multiplexed (TDM) channels
One serial peripheral interface (SPI)
— Supports master and slave modes
— Supports multiple-master operation on the same bus
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MPC862/857T/857DSL Hardware Specifications
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Freescale Semiconductor, Inc.
•
Features
•
•
•
•
•
•
•
•
One inter-integrated circuit (I
2
C) port
— Supports master and slave modes
— Multiple-master environment support
Time-slot assigner (TSA) (The MPC857DSL does not have the 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
— On the MPC862P and MPC862T, can be internally connected to six serial channels (four SCCs
and two SMCs); on the MPC857T, can be connected to three serial channels (one SCC and two
SMCs)
Parallel interface port (PIP)
— Centronics interface support
— Supports fast connection between compatible ports on MPC862/857T/857DSL or MC68360
PCMCIA interface
— Master (socket) interface, release 2.1 compliant
— Supports one or two PCMCIA sockets dependent upon whether ESAR functionality is enabled
— 8 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, PIT, time base, and decrementer with PLL active for fast
wake up
— Deep sleep—All units disabled including PLL except RTC, PIT, time base, and decrementer.
— 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 plastic ball grid array (PBGA) package
Operation up to 100MHz
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The MPC862/857T/857DSL is comprised of three modules that each use the 32-bit internal bus: the
MPC8xx core, the system integration unit (SIU), and the communication processor module (CPM). The
MPC862P/862T block diagram is shown in Figure 1. The MPC857T/857DSL block diagram is shown in
Figure 2.
MOTOROLA
MPC862/857T/857DSL Hardware Specifications
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5
模拟电子
