Compaq 164SX User Manual
AlphaPC 164SX Motherboard
DIGITAL UNIX
User’s Manual
Order Number: EC–R8P7B–TE
Revision/Update Information:
This is a revised document. It supersedes
the AlphaPC 164SX Motherboard
DIGITAL UNIX User’s Manual,
EC–R8P7A–TE.
October 1998
The information in this publication is subje c t to change without noti ce .
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Contents
1 About This Manual
1.1 Manual Conventions and Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2 Features
2.1 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.2 Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.3 Physical Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3.1 ATX Hole Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.3.2 ATX I/O Shield Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
3 AlphaPC 164SX Switch Configuration
3.1 Mini-Debugger (CF3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 CPU Speed Selection (CF[6:4]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.3 Fail-Safe Booter (CF7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
4 AlphaPC 164SX Connector Pinouts
4.1 PCI Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 ISA Expansion Bus Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.3 SDRAM DIMM Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.4 EIDE Drive Bus Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.5 Diskette (Floppy) Drive Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.6 Parallel Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.7 COM1/COM2 Serial Line Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.8 Keyboard/Mouse Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.9 SROM Test Data Input Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.10 Input Power Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.11 Enclosure Fan Power Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
iii
4.12 Microprocessor Fan Power Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.13 Soft Power Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.14 Multipurpose Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
5 Memory and Microprocessor Configuration
5.1 Configuring SDRAM Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 Upgrading SDRAM Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.3 Increasing Microprocessor Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.1 Preparatory Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.2 Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.3 Removing the 21164PC Microprocessor. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3.4 Installing the 21164PC Microprocessor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
6 Interrupts and ISA Bus Addresses
6.1 Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 ISA I/O Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
7 Alpha SRM Console Firmware
7.1 Alpha SRM Console Firmware Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.2 Basic Alpha SRM Console Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . 7-3
7.3 Environment Variables for Alpha SRM Console Commands. . . . . . . . . . . . . . . . 7-18
7.3.1 Environment Variable Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
7.3.1.1 Architecture-Required Environment Variables . . . . . . . . . . . . . . . . . . . . 7-19
7.3.1.2 System-Defined Environment Variables. . . . . . . . . . . . . . . . . . . . . . . . . 7-20
7.4 Using the AlphaBIOS Firmware Update Utility to Update the Flash ROM . . . . . . 7-22
7.4.1 AlphaBIOS Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
7.4.2 Starting the AlphaBIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
7.4.3 Installing Alpha SRM Console Using AlphaBIOS Setup Program. . . . . . . . . 7-24
7.5 Installing the DIGITAL UNIX Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
7.5.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
8 Troubleshooting
8.1 Hardware Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.2 Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.3 Post Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.4 Fail-Safe Booter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
iv
9 Battery Recycle/Disposal Information
A Support, Products, and Documentation
A.1 Customer Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A.2 Supporting Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.1 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.2 Thermal Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.3 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2.4 Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A.3 Associated Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
v
Figures
2–1 AlphaPC 164SX Switch/Connector/Component Location. . . . . . . . . . . . . . . . . . . 2-2
2–2 ATX Hole Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2–3 ATX I/O Shield Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
3–1 AlphaPC 164SX Configuration Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
4–1 Multipurpose Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
5–1 Fan/Heat-Sink Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
7–1 AlphaBIOS Boot Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
7–2 AlphaBIOS Setup Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
7–3 AlphaBIOS Upgrade Options Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25
7–4 AlphaBIOS Warning Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
7–5 AlphaBIOS Upgrade SRM Console Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
7–6 AlphaBIOS Upgrade Complete Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
vi
Tables
2–1 AlphaPC 164SX Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2–2 AlphaPC 164SX Switch/Connector/Component List. . . . . . . . . . . . . . . . . . . . . . . 2-3
2–3 Power Supply DC Current Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2–4 AlphaPC 164SX Motherboard Envi ronmental Requirements . . . . . . . . . . . . . . . . 2-5
4–1 PCI Bus Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4–2 ISA Expansion Bus Connector Pinouts (J22, J23) . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4–3 SDRAM DIMM Connector Pinouts (J7 through J10). . . . . . . . . . . . . . . . . . . . . . . 4-4
4–4 EIDE Drive Bus Connector Pinouts (J5, J6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4–5 Diskette (Floppy) Drive Bus Connector Pinouts (J11). . . . . . . . . . . . . . . . . . . . . . 4-6
4–6 Parallel Bus Connector Pinouts (J13). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4–7 COM1/COM2 Serial Line Connector Pinouts (J3). . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4–8 Keyboard/Mouse Connector Pinouts (J4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4–9 SROM Test Data Input Connector Pinouts (J21) . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4–10 Input Power Connector Pinouts (J2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4–11 Enclosure Fan (+12 V dc) Power Connector Pinouts (J16) . . . . . . . . . . . . . . . . . 4-8
4–12 Microprocessor Fan Power Connector Pinouts (J14). . . . . . . . . . . . . . . . . . . . . . 4-9
4–13 Soft Power Connector Pinouts (J1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4–14 Multipurpose Connector Pinouts (J20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
5–1 AlphaPC 164SX SDRAM Memory Configurations . . . . . . . . . . . . . . . . . . . . . . . . 5-2
6–1 ISA Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6–2 ISA I/O Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
7–1 AlphaBIOS Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
8–1 Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8–2 Post Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
vii
About This Manual
This manual describes the AlphaPC 164SX motherboard, a board for computing
systems based on the Alp ha 21 16 4PC microproc essor and the companio n 21 174 core
logic chip. It describes the motherboard’s features and how to set its configuration
switches. This manual helps users to install and populate the AlphaPC 164SX
motherboard with memory boards and peripheral cards.
1.1 Manual Conventions and Term in ology
The following conventions are used in this manual.
Caution: Cautions indicate potential damage to equipment, software, or data.
Note: Notes provide additional information about a topic.
Numbering: All numbers a re dec imal or hexade cimal un less otherwi se ind icate d. In
case of ambiguity, a subscript indicates the radix of nondecimal numbers. For
example, 19 is a decimal number, but 19
Extents: Extents are specified by a single number or a pair of numbers in brackets
([ ]) separated by a colon (:), and are incl usive. For example, bits [7:3] specify an
extent including bits 7, 6, 5, 4, and 3. Multiple bit fields are shown as extents.
and 19A are hexadecimal numbers.
16
1
Register Figures: Register figures have bit and field position numbering starting at
the right (low-order ) and increasing to the left (high-order).
Signal Names: All signal names are printed in boldface type. Signal names that
originate in an indu stry- stand ard spe cifi catio n, such a s PCI or IDE, are p rint ed in t he
case as found in the spe cificat ion ( usuall y upper case) . Acti ve low s ignal s have e ither
a pound sign “#” appended, or a “not” overscore bar; for example, DEVSEL# and
RESET
Italic Type: Italic type emphasizes important information and indicates complete
titles of documents.
.
About This Manual 1–1
Manual Conventions and Terminology
Terms: The following terms are used in this manual:
This term... Refers to...
Alpha SRM console The Alpha SRM Console firmware
DIGITAL UNIX installation guide The DIGITAL UNIX Installation Guide
DIGITAL UNIX The DIGITAL UNIX operating system
1–2 About This Manual
2
Features
Table 2–1 provides an overview of the AlphaPC 164SX motherboard’s features.
Table 2–1 AlphaPC 164SX Features
Feature Description
Microprocessor Alpha 21164PC microprocessor (64-bit RISC)
Core logic chip 21174 core logic chip, comprising a single control chip that pro-
vides an interface to system memory and the PCI bus
Synchronous DRAM
(SDRAM) memory
Caching
L1 Icache 16KB, direct-mapped, instruction cache on the CPU chip
L1 Dcache 8KB, direct-mapped, data cache on the CPU chip
L2 backup cache Onboard 1MB, direct-mapped, synchronous SSRAM backup
I/O and miscellaneous
support
Firmware Alpha SRM Console firmware
32MB to 512MB memory ar ray -- Two banks of 128-bit memory;
168-pin unbuffered SDRAM DIMMs.
cache with 128-bit data path
• 32-bit and 64-bit, 33-MHz PCI
• Two 64-bit and two 32-bit PCI expansion slots
• Cypress CY82C693U–NC chip with a PCI-to-ISA bridge,
PCI EIDE, keyboard, mouse, and time-of-year clock
• Two dedicated ISA expansion slots
• SMC FDC37C669 combination controller chip provides
control for diskettes, two UARTs with modem control, and
parallel port
• 1MB flash ROM
Features 2–1
Figure 2–1 shows the AlphaPC 164SX motherboard and its components, and
Table 2–2 describes these components.
Figure 2–1 AlphaPC 164SX Switch/Connector/Component Location
U56
U55
Q7
Q4
J16
J14
XU59
Q8
Q5
XB1
X2
X1
U45
21164PC
U31
U20 U21 U22
U10 U11
U2
J23
SW1 J22
J20
U51
U53
J19
J18
U46
U41 U42
U36
U37
U40
U38
U32
J5 J6
U28
U27
U25
U23
U17
U12
U7
U3
U1
U24
U18
U13
J7 J8 J9
U5
U4
J10
J1
U43
U35
U54
J17
J15
U8
U29
U26
U19
U44
U34
21174
U33
J21
U14
U9
U30
U39
U52
U50
U49
X3
U48
U47
J11
J13
U16
J4
J3
U6
U15
J2
2–2 Features
Table 2–2 AlphaPC 164SX Switch/Connector/Component List
Item No. Description Item No. Description
XB1 RTC battery (CR2032) J20 LEDs/speaker/buttons connectors
J1 Soft power connector J21 SROM test port connector
J2 Input power (+3 V, +5 V, -5 V, +12 V,
J22 ISA slot 1
-12 V)
J3 COM1/COM2 (DB9) connectors J23 ISA slot 0
J4 Keyboard/mouse connectors SW1 Configuration switchpack
J5 EIDE drive 2/3 connector U48 System clock PLL (CY2081)
J6 EIDE drive 0/1 connector U10, U11,
L2 cache data SRAMs
U20, U22
J7 SDRAM DIMM 0 [0:63] connector U21 L2 cache tag SRAM
J8 SDRAM DIMM 1 [64:128] connector U33 21174 core logic chip
J9 SDRAM DIMM 2 [0:63] connector U19, U26,
Memory address/control buffers
U29
J10 SDRAM DIMM 3 [64:128] connector U1, U3, U4,
Data switches
U5, U7,
U12, U13,
U17, U18,
U23, U24,
U25, U27
J11 Diskette (floppy) drive connector U40 to U43 Interrupt shift registers
J13 Parallel I/O connector U30 Flash ROM (1MB)
J14 Microprocessor fan/fan sense connector U46 PCI-ISA Bridge (CY82C693U-NC)
J15 PCI slot 3 (32-bit) U36 to U38 IDE buffers
J16 Fan power, enclosure (+12 V) U47 Combination controller
(FDC37C669)
J17 PCI slot 2 (32-bit) U2, U28,
Reg-reg cache isolate logic
U32
J18 PCI slot 1 (64-bit) U31 Microprocessor, socketed
(Alpha 21164PC)
J19 PCI slot 0 (64-bit) U45 Microprocessor clock synthesizer
(MC12439)
Features 2–3
Power Requirements
2.1 Power Requirements
The AlphaPC 164SX motherboard has a total power dissipation of 90 W, excluding
any plug-in PCI and ISA devices. Table 2–3 lists the power requirement for each dc
supply voltage.
The power supply must be ATX-compliant.
Table 2–3 Power Supply DC Current Requirements
Voltage/Tolerance Current
+3.3 V dc, ±5% 5.0 A
1
+5 V dc,
–5 V dc,
+12 V dc,
–12 V dc,
1
Caution: Fan sensor required. The 21164PC microprocessor cooling fan must
±5% 12.0 A
±5% 0.0 A
±5% 1.0 A
±5% 100.0 mA
Values indicated are for an AlphaPC 164SX motherboard with an Alpha 21164PC microprocessor
operating at 400 MHz, with 128MB SDRAM, excluding adapter cards and di sk drives.
drive an RPM indicator signal. If the airflow stops, the sensor on the
motherboard detects that the RPM has stopped, and resets the system.
2.2 Environmental Requirements
The 21164PC microprocessor is cooled by a small fan blowing directly into the
chip’s heat sink. The AlphaPC 164SX motherboard is designed to run efficiently by
using only this fan. Add it ion al fa ns may be necessary depending upon cabinetry and
the requirements of plug-in cards.
The AlphaPC 164SX motherboard is specified to run within the environment listed
in Table 2–4.
2–4 Features
Physical Parameters
Table 2–4 AlphaPC 164SX Motherboard Environmental Requirements
Parameter Specification
Operating temperature 10°C to 40°C (50°F to 104°F)
Storage temperature –55°C to 125°C (–67°F to 257°F)
Relative humidity 10% to 90% with maximum wet bulb temperature
28°C (82°F) and minimum dew point 2°C (36°F)
Rate of (dry bulb) temperature change 11°C/hour
2.3 Physical Parameters
The AlphaPC 164SX motherboard is an ATX-size printed-wiring board (PWB) with
the following dimensions:
• Length: 30.48 cm (12.0 in ±0.0005 in)
• Width: 24.38 cm (9.6 in ±0.0005 in)
• Height: 6.00 cm (2.4 in)
±2°C/hour (20°F/hour ±4°F/hour)
Features 2–5
Physical Parameters
2.3.1 ATX Hole Specification
Figure 2–2 shows the ATX hole specification for the AlphaPC 164SX.
Figure 2–2 ATX Hole Specification
.800
TYP Between
Connectors
.650
.500
.400
4.900
1.612
9.600
8.950
ISA Connector
(2 Places)
6.100
.600
.625
11.100
12.000
PCI Connector
(4 Places)
1.300
FM-06122.AI4
2–6 Features
2.3.2 ATX I/O Shield Requirements
Figure 2–3 shows the ATX I/O shield dimensions for the AlphaPC 164SX.
Figure 2–3 ATX I/O Shield Dimensions
Physical Parameters
R 1.00
5.00 TYP
21.36
16.05
9.25
3.58
2.45
4.35
11.15
15.47
17.95
22.95
23.96
29.10
33.10
68.4
64.9
64.91
60.26
51.27
42.28
40.48
34.13
24.7
25.14
16.7
16.15
14.35
8.00
0.99
9.98
11.78
18.13
19.93
28.92
35.5
37.91
43.5
44.26
46.06
55.05
64.04
7.19 TYP
74.8
70.39
72.19
78.2
81.18
85.4
87.2
90.17
94.4
98.9
95.40
FM-05986.AI4
14.96
R 1.00
Features 2–7
AlphaPC 164SX Switch Configuration
The AlphaPC 164SX motherboard has a switchpack located at SW1, as shown
previously in Figure 2–1. These switches set the hardware conf igu ra ti on. Fi gur e 3 –1
shows these switch configura ti ons .
3.1 Mini-Debugger (CF3)
The Alpha SROM Mini-Debugger is stored in the flash ROM and is enabled/
disabled by switch CF3. The default position for this switch is on (see Figure 3–1).
When this switch is off, it causes the SROM initialization to trap to the MiniDebugger after all initialization is complete, but before starting the execution of the
system flash ROM code.
3.2 CPU Speed Selection (CF[6:4])
The clock synthesizer at U45 makes it possible to change the frequency of the
microprocessor’s clock output. The switch configuration is set in SW1, CF[6:4].
These three switches set the speed at power-up as listed in Figure 3–1. The
microprocessor frequency divided by the ratio determines the system clock
frequency.
3
3.3 Fail-Safe Booter (CF7)
The fail-safe booter provides an emergency recovery mechanism when the primary
firmware image cont ai ned i n f la sh me mo ry has been corrupted. When flash memory
has been corrupted, and no image can be loaded safely from the flash, you can run
the fail-safe booter and boot another image from a diskette that is capable of reprogramming the flash.
Refer to Sect ion 8.4 for more information.
AlphaPC 164SX Switch Configuration 3–1
Fail-Safe Booter (CF7)
Figure 3–1 AlphaPC 164SX Configuration Switches
CF0
CF1
CF2
CF3
CF4
CF5
CF6
CF7
01
Note: Switch defaults are in bold.
Reserved. This must remain CF0=1, CF1=0.
Reserved.
Mini-Debugger: 0 enables Mini-Debugger
1 disables Mini-Debugger
CF Bit: 400 MHz 533 MHz
41 1
51 0
61 1
Fail-Safe Booter: 0: Fail Safe
1: Alpha SRM Console
Note:
All other combinations
are reserved.
3–2 AlphaPC 164SX Switch Configuration
AlphaPC 164SX Connector Pinouts
This chapter lists the pinouts of the AlphaPC 164SX connectors (see Table 4–1
through Table 4–14). See Figure 2–1 for connector locations.
4.1 PCI Bus Connector Pinouts
Table 4–1 shows the PCI bus connector pinouts.
4
Table 4–1 PCI Bus Connector Pinouts
Pin Signal Pin Signal Pin Signal Pin Signal
32-Bit and 64-Bit PCI Connectors (J15 , J17, J18, J19)
A1 TRST# A2 +12V A3 TMS A4 TDI
A5 Vdd A6 INTA A7 INTC A8 Vdd
A9 —A10Vdd A11 — A12 Gnd
A13 Gnd A14 — A15 RST# A16 Vdd
A17 GNT# A18 Gnd A19 — A20 AD[30]
A21 +3V A22 AD[28] A23 AD[26] A24 Gnd
A25 AD[24] A26 IDSEL A27 +3V A28 AD[22]
A29 AD[20] A30 Gnd A31 AD[18] A32 AD[16]
A33 +3V A34 FRAME# A35 Gnd A36 TRDY#
A37 STOP# A38 STOP# A39 +3V A40 SDONE
A41 SBO# A42 Gnd A43 PAR A44 AD[15]
A45 +3V A46 AD[13] A47 AD[11] A48 Gnd
A49 AD[09] A5 0 Not used A51 Not used A52 C/BE#[0]
A53 +3V A54 AD[06] A55 AD[04] A56 Gnd
A57 AD[02] A58 AD[00] A59 Vdd A60 REQ64#
A61 Vdd A62 Vdd B1 -12V B2 TCK
B3 Gnd B4 TDO B5 Vdd B6 Vdd
B7 INTB B8 INTD B9 PRSNT1# B10 —
(Sheet 1 of 2)
AlphaPC 164SX Connector Pinouts 4–1
PCI Bus Connector Pinouts
Table 4–1 PCI Bus Connector Pinouts
Pin Signal Pin Signal Pin Signal Pin Signal
(Sheet 2 of 2)
B11 PRSNT2# B12 Gnd B13 Gnd B14 —
B15 Gnd B16 CLK B17 Gnd B18 REQ#
B19 Vdd B20 AD[31] B21 AD[29] B22 Gnd
B23 AD[27] B24 AD[25] B25 +3V B26 C/BE#[3]
B27 AD[23] B28 Gnd B29 AD[21] B30 AD[19]
B31 +3V B32 AD[17] B33 C/BE#[2] B34 Gnd
B35 IRDY# B36 +3V B37 DEVSEL# B38 Gnd
B39 LOCK# B40 PERR# B41 +3V B42 SERR#
B43 +3V B44 C/BE#[1] B45 AD[14] B46 Gnd
B47 AD[12] B48 AD[10] B49 Gnd B50 Not used
B51 Not used B52 AD[08] B53 AD[07] B54 +3V
B55 AD[05] B56 AD[03] B57 Gnd B58 AD[01]
B59 Vdd B60 ACK64# B61 Vdd B62 Vdd
64-Bit PCI Connectors Only (J18, J19)
A63 Gnd A64 C/BE#[7] A65 C/BE#[5] A66 Vdd
A67 PAR64 A68 D[62] A69 Gnd A70 D[60]
A71 D[58] A72 Gnd A73 D[56] A74 D[54]
A75 Vdd A76 D[52] A77 D[50] A78 Gnd
A79 D[48] A80 D[46] A81 Gnd A82 D[44]
A83 D[42] A84 Vdd A85 D[40] A86 D[38]
A87 Gnd A88 D[36] A89 D[34] A90 Gnd
A91 D[32] A92 — A93 Gnd A94 —
B63 — B64 Gnd B65 C/BE#[6] B66 C/BE#[4]
B67 Gnd B68 D[63] B69 D[61] B70 Vdd
B71 D[59] B72 D[57] B73 Gnd B74 D[55]
B75 D[53] B76 Gnd B77 D[51] B78 D[49]
B79 Vdd B80 D[47] B81 D[45] B82 Gnd
B83 D[43] B84 D[41] B85 Gnd B86 D[39]
B87 D[37] B88 Vdd B89 D[35] B90 D[33]
B91 Gnd B92 — B93 — B94 Gnd
4–2 AlphaPC 164SX Connector Pinouts
ISA Expansion Bus Connector Pinouts
4.2 ISA Expansion Bus Connector Pinouts
Table 4–2 shows the ISA expansion bus connector pinouts.
Table 4–2 ISA Expansion Bus Connector Pinouts (J22, J23)
Pin Signal Pin Signal Pin Signal Pin Signal
1 Gnd 2 IOCHCK# 3 RSTDRV 4 SD7
5 Vdd 6 SD6 7 IRQ9 8 SD5
9 –5V 10 SD4 11 DRQ2 12 SD3
13 –12V 14 SD2 15 ZEROWS# 16 SD1
17 +12V 18 SD0 19 Gnd 20 IOCHRDY
21 SMEMW# 22 AEN 23 SMEMR# 24 SA19
25 IOW# 26 SA18 27 IOR# 28 SA17
29 DACK3# 30 SA16 31 DRQ3 32 SA15
33 DACK1# 34 SA14 35 DRQ1 36 SA13
37 REFRESH# 38 SA12 39 SYSCLK 40 SA11
41 IRQ7 42 SA10 43 IRQ6 44 SA9
45 IRQ5 46 SA8 47 IRQ4 48 SA7
49 IRQ3 50 SA6 51 DACK2# 52 SA5
53 TC 54 SA4 55 BALE 56 SA3
57 Vdd 58 SA2 59 OSC 60 SA1
61 Gnd 62 SA0 63 MEMCS16# 64 SBHE#
65 IOCS16# 66 LA23 67 IRQ10 68 LA22
69 IRQ11 70 LA21 71 IRQ12 72 LA20
73 IRQ15 74 LA19 75 IRQ14 76 LA18
77 DACK0# 78 LA17 79 DRQ0 80 MEMR#
81 DACK5# 82 MEMW# 83 DRQ5 84 SD8
85 DACK6# 86 SD9 87 DRQ6 88 SD10
89 DACK7# 90 SD11 91 DRQ7 92 SD12
93 Vdd 94 SD13 95 MASTER# 96 SD14
97 Gnd 98 SD15 —— ——
AlphaPC 164SX Connector Pinouts 4–3
SDRAM DIMM Connector Pinouts
4.3 SDRAM DIMM Connector Pinouts
Table 4–3 shows the SDRAM DIMM connector pinouts.
Table 4–3 SDRAM DIMM Connector Pinouts (J7 through J10)1
Pin Signal Pin Signal Pin Signal Pin Signal
1 Gnd 2 DQ0 3 DQ1 4 DQ2
5 DQ3 6 +3V 7 DQ4 8 DQ5
9 DQ6 10 DQ7 11 DQ8 12 Gnd
13 DQ9 14 DQ10 15 DQ11 16 DQ12
17 DQ13 18 +3V 19 DQ14 20 DQ15
21 CB0 22 CB1 23 Gnd 24 NC
25 NC 26 +3V 27 WE
29 DQMB1 30 S0
33 A0 34 A2 35 A4 36 A6
37 A8 38 A10 39 A12 40 +3V
41 +3V 42 CK0 43 Gnd 44 NC
45 S2
49 +3V 50 NC 51 NC 52 CB2
53 CB3 54 Gnd 55 DQ16 56 DQ17
57 DQ18 58 DQ19 59 +3V 60 DQ20
61 NC 62 NC 63 CKE1 64 Gnd
65 DQ21 66 DQ22 67 DQ23 68 Gnd
69 DQ24 70 DQ25 71 DQ26 72 DQ27
73 +3V 74 DQ28 75 DQ29 76 DQ30
77 DQ31 78 Gnd 79 CK2 80 NC
81 NC 82 SDA 83 SCL 84 +3V
85 Gnd 86 DQ32 87 DQ33 88 DQ34
89 DQ35 90 +3V 91 DQ36 92 DQ37
93 DQ38 94 DQ39 95 DQ40 96 Gnd
97 DQ41 98 DQ42 99 DQ43 100 DQ44
101 DQ45 102 +3V 103 DQ46 104 DQ47
105 CB4 106 CB5 107 Gnd 108 NC
109 NC 110 +3V 111 CAS
113 DQMB5 114 S1 115 RAS
117 A1 118 A3 119 A5 120 A7
121 A9 122 BA0 123 A13 124 +3V
46 DQMB2 47 DQMB3 48 NC
31 NC 32 Gnd
28 DQMB0
112 DQMB4
116 Gnd
(Sheet 1 of 2)
4–4 AlphaPC 164SX Connector Pinouts
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