The letter X in the part number designates a "Prototype" product that has not been qualified by Atmel. Reliability of a PCX part-number is not guaranteed and such part-number shall not be used in Flight Hardware. Product changes may still occur while shipping prototypes.
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PCX7457VGU933NC (pdf) |
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• 3000 Dhrystone MIPS at GHz • Selectable Bus Clock 30 CPU Bus Dividers up to 28x • 13 Selectable Core-to-L3 Frequency Divisors • Selectable MPx/60x Interface Voltage 1.8V, 2.5V • Selectable L3 Interface of 1.8V or 2.5V • PD Typical 12.6W at 1 GHz at VDD = 1.3V 8.3W at 1 GHz at VDD = 1.1V, Full Operating Conditions • Nap, Doze and Sleep Modes for Power Saving • Superscalar Four Instructions Fetched Per Clock Cycle • 4 GB Direct Addressing Range • Virtual Memory 4 Hexabytes 252 • 64-bit Data and 36-bit Address Bus Interface • Integrated L1 36 KB Instruction and 32 KB Data Cache • Integrated L2 512 KB • 11 Independent Execution Units and Three Register Files • Write-back and Write-through Operations • fINT Max = 1 GHz to be Confirmed • fBUS Max = 133 MHz/166 MHz PowerPC 7457 RISC Microprocessor PC7457 The PC7457 is implementations of the microprocessor family of reduced instruction set computer RISC microprocessors. This document describes pertinent electrical and physical characteristics of the PC7457. The PC7457 is the fourth implementation of the fourth generation G4 microprocessors from Freescale. The PC7457 implements the full PowerPC 32-bit architecture and is targeted at networking and computing systems applications. The PC7457 consists of a processor core, a 512 Kbyte L2, and an internal L3 tag and controller which support a glueless backside L3 cache through a dedicated high-bandwidth interface. The core is a high-performance superscalar design supporting a double-precision floating-point unit and a SIMD multimedia unit. The memory storage subsystem supports the MPX bus interface to main memory and other system resources. The L3 interface supports 1, 2, or 4M bytes of external SRAM for L3 cache and/or private memory data. For systems implementing 4M bytes of SRAM, a maximum of 2M bytes may be used as cache the remaining 2M bytes must be private memory. Note that the PC7457 is a footprint-compatible, drop-in replacement in a PC7455 application if the core power supply is 1.3V. Screening • CBGA Upscreenings Based on Atmel Standards • Full Military Temperature Range TJ = -55° C, +125° C , Industrial Temperature Range TJ = -40° C, +110° C • HCTE Package for the 7457 G suffix CBGA 483 Ceramic Ball Grid Array GH suffix HITCE 483 Ceramic Ball Grid Array 2 PC7457 Block Diagram Figure PC7457 Microprocessor Block Diagram Additional Features - Time Base Counter/Decrementer - Clock Multiplier - JTAG/COP Interface - Thermal/Power Management - Performance Monitor Completion Unit 96-Bit 3 Instructions Completion Queue 16-Entry Instruction Unit Branch Processing Unit BTIC 128-Entry CTR BHT 2048-Entry LR Fetcher Dispatch Unit VR Issue 4-Entry/2-Issue GPR Issue 6-Entry/3-Issue Instruction Queue 12-Word FPR Issue 2-Entry/1-Issue Instruction MMU SRs 128-Entry Shadow ITLB IBAT Array 128-Bit 4 Instructions 32-Kbyte Tags I Cache Data MMU 128-Entry Original DTLB DBAT Array Tags 32-Kbyte D Cache Completes up to three instructions per clock This section provides the AC electrical characteristics for the PC7457. After fabrication, functional parts are sorted by maximum processor core frequency as shown in section “Clock AC Specifications” and tested for conformance to the AC specifications for that frequency. The processor core frequency is determined by the bus SYSCLK frequency and the settings of the PLL_CFG[0:4] signals. Parts are sold by maximum processor core frequency See “Ordering Information” on page Clock AC Specifications Table 7-2 provides the clock AC timing specifications as defined in Figure 7-1 and represents the tested operating frequencies of the devices. The maximum system bus frequency, fSYSCLK, given in Table 7-2 is considered a practical maximum in a typical single-processor system. The actual maximum SYSCLK frequency for any application of the PC7457 will be a function of the AC timings of the PC7457, the AC timings for the system controller, bus loading, printed-circuit board topology, trace lengths, and so forth, and may be less than the value given in Table Table Clock AC Timing Specifications See “Recommended Operating Conditions 1 ” on page 12 Maximum Processor Core Frequency 600 MHz 867 MHz 1000 MHz Characteristic VDD = 1.1V VDD = 1.1V VDD = 1.1V fCORE 1 fVCO 1 fSYSCLK 1 2 tSYSCLK 2 tKR, tKF 3 tKHKL/tSYSCLK 4 Processor frequency VCO frequency SYSCLK frequency SYSCLK cycle time SYSCLK rise and fall time SYSCLK duty cycle measured at OVDD/2 SYSCLK jitter 5 6 500 1000 33 6 40 600 1200 167 30 1 60 150 500 1000 33 6 40 867 1733 167 30 1 60 150 500 1000 1000 2000 167 Internal PLL relock time 7 Unit MHz ns % ps µs Symbol fCORE 1 fVCO 1 fSYSCLK 1 2 tSYSCLK 2 tKR, tKF 3 Characteristic Processor frequency VCO frequency SYSCLK frequency SYSCLK cycle time SYSCLK rise and fall time 20 PC7457 Maximum Processor Core Frequency 867 MHz 1000 MHz 1200 MHz 1267 MHz VDD = 1.3V Min Max VDD = 1.3V Min Max VDD = 1.3V Min Max VDD = 1.3V Min Max 600 867 600 1000 600 1200 600 1267 Ordering Information xx 7457 Product Part Code 1 Identifier Temperature Range TJ 1 Package 1 Screening Level Max Internal Processor Speed 1 Modifier 1 Level 1 PC X 2 7457 G CBGA GH HiTCE V GHY HiTCE U Upscreening CBGA Blank standard 933 MHz 1000 MHz N 1.1V ± 50 mV For availability of the different versions, contact your local Atmel sales office. The letter X in the part number designates a "Prototype" product that has not been qualified by Atmel. Reliability of a PCX part-number is not guaranteed and such part-number shall not be used in Flight Hardware. Product changes may still occur while shipping prototypes. 56 PC7457 PC7457 Date Substantive Change s 03/06 Remove PC7447. Modification Table 6-1 on page 13? and ordering information Updated document to new Atmel template Updated section numbering and changed reference from part number specifications to addendums Table 6-2 on page 13 Added CTE information Table 7-2 on page 20 Modified jitter specifications to conform to JEDEC standards, changed jitter specification to cycle-to-cycle jitter instead of long- and short-term jitter changed jitter bandwidth recommendations Table 7-7 on page 29 Deleted note 9 and renumbered. Table 7-8 on page 31 Deleted note 5 and renumbered 06/2005 Added Section ”System Bus Clock SYSCLK and Spread Spectrum Sources” on page 50 Section on page 47 Corrected note regarding different PLL configurations for earlier devices all PC7457 devices to date conform to this table Section on page 52 Added information about unused L3_ADDR signals. HCTE package information Preliminary specification α-site release subsequent to preliminary specification Motorola changed to Freescale Figure 7-3 on page 22 Corrected pin lists for input and output AC timing to correctly show HIT as an outputonly signal 11/2004 Added specifications for 1267 MHz devices removed specs for 1300 MHz devices. Changed recommendations regarding use of L3 clock jitter in AC timing analysis in Section “L3 Clock AC Specifications” on page 24 the L3 jitter is now fully comprehended in the AC timing specs and does not need to be included in the timing analysis PC7457 Table of Contents Features 1 Description 1 Screening 2 1 Block Diagram 3 2 General Parameters 4 3 Overview 4 Signal Description 10 5 Detailed Specification 11 6 Applicable Documents 11 Design and Construction Thermal Characteristics 7 Electrical Characteristics 19 Static Characteristics Dynamic Characteristics 8 Preparation for Delivery 36 Handling Package Parameters for the PC7457, 483 CBGA and 483 HCTE 9 Mechanical Dimensions for the PC7457, 483 CBGA 41 10 Substrate Capacitors for the PC7457, 483 CBGA 42 11 Mechanical Dimensions for the PC7457, 483 HCTE 43 12 Substrate Capacitors for the PC7457, 483 HCTE 44 13 Mechanical Dimensions for the PC7457, 483 HCTE ROHS compliant 45 14 Substrate Capacitors for the PC7457, 483 HCTE ROHS Compliant 45 15 System Design Information 47 Clocks PLL Power Supply Filtering Decoupling Recommendations Connection Recommendations Output Buffer DC Impedance Pull-up/Pull-down Resistor Requirements JTAG Configuration Signals 16 Definitions 56 Life Support Applications Table of Contents i ii PC7457 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel 41 26-426-5555 Fax 41 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel 852 2721-9778 Fax 852 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel 33 2-40-18-18-18 Fax 33 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel 33 4-42-53-60-00 Fax 33 4-42-53-60-01 1150 East Cheyenne Mtn. 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