Sun Microsystems SME5224AUPA-400 manual System Interface

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UltraSPARC™-II CPU Module	Advanced Version
400 MHz CPU, 4.0 MB E-Cache	SME5224AUPA-400

SYSTEM INTERFACE

Figure 2 shows the major components of a UPA based uniprocessor system. The system controller [1] for the UPA bus arbitrates between the UltraSPARC™–II, 400 MHz CPU, 4.0 Mbyte module, and the I/O bridge chip. The ﬁgure also illustrates a slave-only UPA graphics port for Sun graphics boards.

The module UPA system interface signals run at one-quarter of the rate of the internal CPU frequency.

	UltraSPARC-II
	Module
	SME5224AUPA-400
	UPA Address Bus 0		System	UPA Address Bus 1	UPA
	UPA Address Bus 0		System	UPA Address Bus 1	Graphic
	144		Controller		Graphic
			Controller		Device
					Device
	I/O Bridge	UPA Data Bus		UPA Data Bus
	Chip		72
			72
		UPA Data Bus
			72

				Memory Data Bus
	Cross Bar			Memory Data Bus
	Switch

Memory

SIMMs

Expansion Bus

Figure 2. Uniprocessor System Conﬁguration

UPA Connector Pins

The UPA edge connector provides impedance control. The pin assignments are shown with the physical mod- ule connector and are represented on page 24 and page 25.

UPA Interconnect

The UltraSPARC™–II, 400 MHz CPU, 4.0 Mbyte module, (SME5224AUPA-400), supports full master and slave functionality with a 128-bit data bus and a 16-bit error correction code (ECC).

All signals that interface with the system are compatible with LVTTL levels. The clock inputs at the module connector, CPU_CLK, UPA_CLK0, and UPA_CLK1, are differential low-voltage PECL compatible.

1.Only two megabytes of external cache are recognized and supported when using the Dual Processor System Controller (DSC, Marketing Part No.STP2202ABGA).

July 1999

Sun Microsystems, Inc

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Contents Module Description Module Features Module BeneﬁtsEase of System Design PerformanceCPU Features CPU Beneﬁts CPU DescriptionUltraSPARC-II CPU Data Buffer Description External Cache DescriptionUltraSPARC-II Data Buffer UDB-II Module Component Overview Block DiagramUPA Connector Pins System InterfaceUPA Interconnect Module Power Module IDJtag Interface Signal Type Name and Function Signal DescriptionSystem Interface Clock InterfaceMiscellaneous Signals JTAG/Debug InterfaceInitialization Interface System Clocks Module ClocksSystem Clock Distribution Tested CPU to UPAClock Signal Distribution Symbol Parameter Rating Units Electrical CharacteristicsSymbol Parameter Min Typ Max Units Absolute Maximum RatingsDC Characteristics Module Power ConsumptionSymbol Parameter Conditions Min Typ Max Units Module System Loading Example for UPADATA, Upaecc UPA Data Bus Spice ModelUpaclk Module Clocks Setup and Hold Time SpeciﬁcationsCpuclk Module Clock Clock BuffersPropagation Delay, Output Hold Time Speciﬁcations Timing Measurement WaveformsMin Max Unit CPU Module Components Mechanical SpecificationsCPU Module Side View Two Step Approach to Thermal Design Thermal SpecificationsTerm Deﬁnition Speciﬁcation Comments Thermal Deﬁnitions and SpeciﬁcationsAirﬂow Cooling Measurement Method Temperature Estimating and Measuring MethodsAir Velocity Speciﬁcations Air VelocityHeatsink Temperature Measuring Method Case Temperature Measuring MethodAC Characteristics Jtag Timing MHz CPU MHz TCK Symbol Parameter Signals ConditionsJtag Testability Jtag Ieee 1149.1 Timing Pin UPA Connector PIN Assignments TOP ViewVddcore GND Vddcore GND Vddcore UPAPORTID1 UPA Connector PIN Assignments Bottom ViewStorage and Shipping Specification Handling CPU ModulesValue Parameter Conditions Min Typ Document Revision History Ordering InformationPart Number CPU Speeds Description Date Document No ChangeSun Microsystems, Inc UltraSPARC -II CPU Module UltraSPARC-II CPU Data Buffer Description Block Diagram System Interface Module ID System Interface JTAG/Debug Interface UPA and CPU Clocks Clock Signal Distribution Absolute Maximum Ratings DC Characteristics UPA Data Bus Spice Model Upaclk Module Clocks Propagation Delay, Output Hold Time Speciﬁcations Mechanical Specifications CPU Module Side View Two Step Approach to Thermal Design Thermal Deﬁnitions and Speciﬁcations Temperature Estimating and Measuring Methods Case Temperature Measuring Method AC Characteristics Jtag Timing Jtag Ieee 1149.1 Timing UPA Connector PIN Assignments TOP View UPA Connector PIN Assignments Bottom View Storage and Shipping Specification Ordering Information Sun Microsystems, Inc