參數(shù)資料
型號(hào)： IBM25PPC970FX6UB267ET
元件分類： 微控制器/微處理器
英文描述： 64-BIT, 1800 MHz, RISC PROCESSOR, CBGA576
封裝： 25 X 25 MM, 1 MM PITCH, CERAMIC, BGA-576
文件頁(yè)數(shù)： 24/78頁(yè)
文件大?。?/td> 3524K
代理商： IBM25PPC970FX6UB267ET
Datasheet
PowerPC 970FX RISC Microprocessor
Electrical and Thermal Characteristics
Page 30 of 78
Version 2.5
March 26, 2007
3.5 Processor Interconnect Specifications
3.5.1 Electrical and Physical Specifications
3.5.1.1 Source Synchronous Bus
Figure 3-3 provides a representative block diagram of a source synchronous bus (SSB) for a
PowerPC 970FX RISC Microprocessor processor interconnect implementation. Each SSB consists of three
major subsections: the drive side, the module-to-module interconnect, and the receive side. First, data is
either balance-coding-method encoded or checksummed, then clock-phase multiplexed, and finally launched
from the drive side onto the module interconnect. The receive side includes far-end termination and circuitry
to demultiplex, deskew data, align clocks, and synchronize the received data.
3.5.1.2 Drive Side Characteristics
Figure 3-4 shows a typical implementation for a single-ended line. The drivers are of the push-pull type with a
nominal impedance (R0 of 20
Ω) that overdrives the line impedance. The nominal swing at the receiver,
terminated with resistance (TR0 of 110
Ω) to each rail, is 13% OVDD to 87% OVDD. R0 is 20 Ω when the
signal driver is in the low output impedance mode. The 20
Ω setting is suitable for all bus speeds. The
PowerPC 970FX has a 40
Ω nominal output impedance mode that is suitable for bus speeds less than
800 megatransfers per second in some applications.
The maximum skew between any of the outputs is 150 ps at the ball grid array pin. The maximum intercon-
nect skew on the system board between any two outputs must be less than 150 ps. The interconnect skew on
the system board between any two inputs must be less than 300 ps.
Figure 3-3. Block Diagram of an SSB for a Processor Interconnect Implementation
D
Clock
Source
TERM
R
Clock
Distribution
Receive Side
Interconnect
Drive Side
R
TERM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IBM25PPC970FX6UB429RT 制造商:IBM Microelectronics 功能描述:MPU 970FX RISC 64BIT 90NM 1.5V 576CBGA - Trays 制造商:IBM 功能描述:IBM IBM25PPC970FX6UB429RT Co-Processors
IBM25PPC970GX7TR01-ET 制造商:IBM 功能描述:ANTARES GX DD1.0X 1.2GHZ POWER OPTIMIZED - Trays
IBM25PPC970GX7TR05-ET 制造商:IBM 功能描述:ANTARES GX DD1.0X 1.4GHZ POWER OPTIMIZED - Trays
IBM25PPC970GX7TR20-ET 制造商:IBM Microelectronics 功能描述:ANTARES GX DD1.0X 1.6GHZ POWER OPTIMIZED - Trays
IBM25PPC970GX7TR23-ET 制造商:IBM 功能描述:ANTARES GX DD1.0X 1.6GHZ PERFORMANCE OPTIMIZED - Trays
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