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Hardware Reference Manual 225
Intel
®
IXP2800 Network Processor
SHaC — Unit Expansion
SHaC — Unit Expansion 7
This section covers the operation of the Scratchpad, Hash Unit, and CSRs (SHaC).
7.1 Overview
The SHaC unit is a multifunction block containing Scratchpad memory and logic blocks used to
perform hashing operations and interface with the Intel XScale
®
core peripherals and control status
registers (CSRs) through the Advanced Peripheral Bus (APB) and CSR buses, respectively. The
SHaC also houses the global registers, as well as Reset logic.
The SHaC unit has the following features:
Communication to Intel XScale
®
core peripherals, such as GPIOs and timers, through the
APB.
Creation of hash indices of 48-, 64-, or 128-bit widths.
Communication ring used by Microengines for interprocess communication.
Third-option memory storage usable by Intel XScale
®
core and Microengines.
CSR bus interface to permit fast writes to CSRs, as well as standard read and writes.
Push/Pull Reflector to transfer data from the Pull bus to the Push bus.
The CSR and ΑRM* Advanced Peripheral Bus (APB) bus interfaces are controlled by the
Scratchpad state machine and will be addressed in the Scratchpad design detail section.
(See Section 7.1.2.)
Note: Detailed information about CSRs is contained in the Intel
®
IXP2400 and IXP2800 Network
Processor Programmers Reference Manual.
7.1.1 SHaC Unit Block Diagram
The SHaC unit contains two functional units: the Scratchpad and Hash Unit. Each will be described
in greater detail in the following sections. The CAP and APB interfaces are described as part of the
Scratchpad description.
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Liebert Precision Cooling System DS podręczniki

Instrukcje obsługi i podręczniki użytkownika dla Sprzęt komputerowy Liebert Precision Cooling System DS.
Dostarczamy 1 pdf podręczników Liebert Precision Cooling System DS do pobrania za darmo według typów dokumentów: Instrukcja Użytkownika


Spis treści

User Manual

1

2

TABLE OF CONTENTS

3

SAVE THESE INSTRUCTIONS

11

2.0 COOLING CONFIGURATIONS

16

3.1 Room Preparation

17

Pre-Installation Guidelines

18

3.5 Operating Conditions

19

35"

22

33"

22

Dry Weight - lb. (kg)

23

Approximate

23

DPN000924

24

TOP VIEW

26

FRONT VIEW

26

DPN001013

28

24"

33

Supply air

37

26"

39

Top of Unit

40

DPN001196

43

SAFETY INFORMATION

45

Spreader Bars and Slings

46

Piano Jacks

46

Forklift

46

5.2.3 Removing Piano Jacks

48

DETAIL A

51

6.1 Required Equipment

52

6.3 Reassembly—Downflow Units

55

6.4 Reassembly Checklist

56

60-3/16"

57

(1529mm)

57

59-7/16"

60

(1509mm)

60

37"

61

6.5 Disassembly—Upflow Units

66

6.6 Reassembly—Upflow Unit

68

6.7 Reassembly Checklist

68

31-1/4"

69

45-13/16"

71

(1163mm)

71

7.0 ELECTRICAL CONNECTIONS

78

Electrical Connections

80

8.0 PIPING

82

INCORRECT

83

INCORRECTINCORRECT

83

General Guidelines

84

8.2 Refrigeration Piping

85

Fan Speed Control Piping

88

Fan Speed Charging

89

Lee-Temp Piping

90

Lee-Temp Charging

91

9.0 PIPING SCHEMATICS

92

For systems with drycoolers

94

CUSTOMER

95

HEAT REJECTION

95

LIEBERT DS UNIT

96

(and associated piping)

96

Piping Schematics

100

FRONT OF UNIT

101

Front View

101

Section A-A

101

DPN000803

101

Front of Unit

102

DPN000804

102

DPN000900

103

DPN000928

104

DPN000929

105

DPN000933

106

DPN001014

107

DPN001015

108

15-3/16"

109

FRONT SECTION VIEW

110

DPN001119

110

15-7/8"

111

FRONT SECTION VIEW OF UNIT

112

(Left Front Panel Not Shown)

112

TOP VIEW OF UNIT

112

Top View

113

Left Side Section View

113

Front Section View

113

FRONT SECTION VIEW OF UNIT

115

Front Of Unit

116

DPN001258

116

10.2 Electrical

117

10.3 Piping

117

10.4 Other

117

WARNING

118

12.0 MAINTENANCE

121

12.2 Blower Drive System

122

12.2.1 Upflow Motor Access

123

12.2.2 Belt Removal

123

Maintenance

124

Correct Switch Orientation

125

Incorrect Switch Orientation

125

DPN000996

125

12.4.1 Condensate Drain

126

12.4.2 Condensate Pump

126

12.7 Compressor

127

12.8 Compressor Replacement

128

12.10.1 Cleaning Instructions

129

12.11.3Drycooler Settings

131

AINTENANCE CHECKLIST

132

HVAC Maintenance Checklist

133

Glycol Pump

134

SL-18825_REV07_05-08

136





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