Compaq 164SX user manual Multipurpose Connector Pinouts, J20

Page 30

Multipurpose Connector Pinouts

Table 4–14 Multipurpose Connector Pinouts (J20)

(Sheet 2 of 2)

 

 

 

 

Pin

Signal

Description

 

 

 

 

 

5

HD_PU

Hard drive power-up

 

6

HD_LED

Pull-up to Vdd

 

 

 

 

 

7

No connection

 

 

 

 

 

8

POWER_LED_L

Pull-up to Vdd

 

10, 12, 14, 16

Gnd

 

 

 

 

 

9

SPKR

Speaker output

 

15

Vdd

 

11, 13

No connection

 

Figure 4–1 Multipurpose Connector Pinouts

HD_PU

SPKR

Vdd

 

 

 

 

 

 

 

 

J20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

 

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HALT_BUTTON

RESET_BUTTON

HD_LED

POWER_LED_L

4–10AlphaPC 164SX Connector Pinouts

Image 30
Contents Digital Unix October Contents Interrupts and ISA Bus Addresses Memory and Microprocessor ConfigurationTroubleshooting Alpha SRM Console FirmwarePage Figures Tables Page About This Manual Manual Conventions and TerminologyManual Conventions and Terminology Terms The following terms are used in this manualFeatures AlphaPC 164SX FeaturesAlphaPC 164SX Switch/Connector/Component Location AlphaPC 164SX Switch/Connector/Component List XB1Power Supply DC Current Requirements Power RequirementsPower Requirements Environmental RequirementsPhysical Parameters Physical ParametersAlphaPC 164SX Motherboard Environmental Requirements Physical Parameters ATX Hole Specification 2shows the ATX hole specification for the AlphaPC 164SX3shows the ATX I/O shield dimensions for the AlphaPC 164SX Physical Parameters ATX I/O Shield RequirementsPage Mini-Debugger CF3 AlphaPC 164SX Switch ConfigurationFail-Safe Booter CF7 CPU Speed Selection CF64Fail-Safe Booter CF7 AlphaPC 164SX Configuration Switches1shows the PCI bus connector pinouts AlphaPC 164SX Connector PinoutsPCI Bus Connector Pinouts PCI Bus Connector PinoutsPCI Bus Connector Pinouts REQ#2shows the ISA expansion bus connector pinouts ISA Expansion Bus Connector PinoutsISA Expansion Bus Connector Pinouts ISA Expansion Bus Connector Pinouts J22, J233shows the Sdram Dimm connector pinouts Sdram Dimm Connector PinoutsSdram Dimm Connector Pinouts Sdram Dimm Connector Pinouts J7 through J104shows the Eide drive bus connector pinouts Eide Drive Bus Connector PinoutsEide Drive Bus Connector Pinouts Eide Drive Bus Connector Pinouts J5, J6Diskette Floppy Drive Bus Connector Pinouts Diskette Floppy Drive Bus Connector PinoutsParallel Bus Connector Pinouts 5shows the diskette floppy drive bus connector pinoutsCOM1/COM2 Serial Line Connector Pinouts COM1/COM2 Serial Line Connector PinoutsKeyboard/Mouse Connector Pinouts 7shows the COM1/COM2 serial line connector pinoutsEnclosure Fan Power Connector Pinouts Srom Test Data Input Connector PinoutsInput Power Connector Pinouts Srom Test Data Input Connector PinoutsMultipurpose Connector Pinouts Microprocessor Fan Power Connector PinoutsSoft Power Connector Pinouts Microprocessor Fan Power Connector PinoutsMultipurpose Connector Pinouts J20Memory and Microprocessor Configuration Configuring Sdram MemoryAlphaPC 164SX Sdram Memory Configurations Upgrading Sdram MemoryUpgrading Sdram Memory Preparatory Information Increasing Microprocessor SpeedIncreasing Microprocessor Speed Required ToolsInstalling the 21164PC Microprocessor Fan/Heat-Sink Assembly 6Memory and Microprocessor Configuration 1lists each AlphaPC 164SX ISA interrupt and its source Interrupts and ISA Bus AddressesInterrupts ISA Interrupts2lists the AlphaPC 164SX ISA I/O space address mapping ISA I/O Address MapISA I/O Address Map ISA I/O Address MapAlpha SRM Console Firmware Alpha SRM Console Firmware ConventionsFollowing conventions are used in this section Alpha SRM Console Firmware Conventions Basic Alpha SRM Console Command Descriptions Basic Alpha SRM Console Command DescriptionsArc NoneBoot 6Alpha SRM Console Firmware Boots the system from the default boot device Deposit Writes data to the specified addressData to be deposited Clears the first 512 bytes of physical Displays the contents of the specified address Examine12Alpha SRM Console Firmware Examines Fwupdate Set Sets or modifies the value of an environment variableEnvironment variable to be assigned a new value 16Alpha SRM Console Firmware Show Environment Variables for Alpha SRM Console Commands Environment Variables for Alpha SRM Console CommandsEnvironment Variable Descriptions Architecture-Required Environment Variables System-Defined Environment Variables OffSet language Init AlphaBIOS Conventions AlphaBIOS KeysPress F2 to start the AlphaBIOS setup program Windows NT WorkstationAlphaBIOS Setup Screen Press Enter to continue the installation AlphaBIOS Upgrade Options ScreenAlphaBIOS Warning Screen Press F10 to continue the installation AlphaBIOS Upgrade SRM Console Screen6shows an example of the AlphaBIOS Upgrade Complete screen AlphaBIOS Upgrade Complete ScreenInstalling the Digital Unix Operating System Installing the Digital Unix Operating SystemRequirements Page Troubleshooting Troubleshooting Steps No VideoHardware Startup Beep Codes Beep CodesPost Codes Beep CodesPost Codes Fail-Safe Booter Fail-Safe BooterProceed to .4 and follow the procedures Battery Recycle/Disposal Information Battery Recycle/Disposal InformationPage News Press releases Support, Products, and DocumentationCustomer Support DescriptionSupporting Products Power SupplySupporting Products MemoryEnclosure Associated DocumentationAssociated Documentation Northwestern El Paso, TX Phone4Support, Products, and Documentation