Chenbro RM23712 User Manual

RM23712 TPS
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operation once ‘in spec’ clock and data timing is again received. Note if the PSMC ‘misses’ a clock
from the master due to noise or other bus errors, the device must continue to accept ‘in spec’ clocks
and NACK. The PSMC is supposed to re-synch with the master on the next START or STOP
condition.
3.4.2.4 Write byte/word
The first byte of a Write Byte/Word access is the command code. The next one or two bytes,
respectively, are the data to be written. In this example the master asserts the slave device address
followed by the write bit. The device acknowledges and the master delivers the command code. The
slave again acknowledges before the master sends the data byte or word (low byte first). The slave
acknowledges each byte, and the entire transaction is finished with a STOP condition.
Figure 17.Write byte protocol with PEC
Figure 18.Write Word protocol with PEC
3.4.2.5 Read byte/word
Reading data is slightly more complicated than writing data. First the host must write a command to
the slave device. Then it must follow that command with a repeated START condition to denote a
read from that device’s address. The slave then returns one or two bytes of data.
Note that there is no STOP condition before the repeated START condition, and that a NACK
signifies the end of the read transfer.
Figure 19.Read byte protocol with PEC
Figure 20.Read Word protocol with PEC

Chenbro RM23712 Specifications

General

Brand	Chenbro
Model	RM23712
Category	Racks & Stands
Language	English

Summary

Product Overview

System Features Overview

General overview of system features and available options.

Server Board Features Overview

Key features and component locations on the server board.

Front Control Panel

Description of buttons, LEDs, and ports on the front control panel.

System Power

General Description and Scope

Overview and scope of the power supply specification (FSP800-20ERM).

Electrical Performance

Detailed electrical specifications and performance criteria.

AC Power Input Specification

Specifications for AC input voltage, frequency, and connectors.

Input Current

Maximum input current ratings for various input voltages.

Efficiency

Module efficiency requirements for 80Plus Platinum rating.

Susceptibility Requirements

Immunity requirements for EMI, transients, surges, and ESD.

Surge Immunity

Immunity requirements against AC Ringwave and AC Unidirectional surges.

AC Line Transient Specification

Performance during AC line sag and surge conditions.

AC Line Fast Transient (EFT) Specification

Requirements for fast transient (EFT) immunity.

DC Output Voltages

Specifications for DC output voltages and their regulation.

Output Rating

Power and current ratings for the +12V and +12Vsb outputs.

Voltage Regulation

Voltage regulation requirements for output voltages under various conditions.

Ripple and Noise Regulation

Specifications for output ripple and noise levels.

Dynamic Loading

Requirements for step loading and capacitive loading.

Load Sharing Control

Active load sharing capabilities for parallel power supplies.

Timing Requirements

Timing requirements for power supply operation and turn-on/off signals.

Output Voltage Timing

Timing specifications for output voltage rise and fall.

Control and Indicator Functions

Input and output signals for power supply control and status indication.

PSON# Input Signal (Power Supply Enable)

Description of the PSON# signal for remote power on/off control.

Power OK (PG or PWOK) Output Signal

Description of the Power Good (PWOK) signal indicating output status.

Protection Circuits

Overview of internal protection circuits like OVP, OCP, and OTP.

Over Voltage Protection (OVP)

Protection against over-voltage conditions on main and auxiliary outputs.

Over Current and Short Circuit Protection (OCP/SCP)

Protection against over-current and short-circuit conditions.

Over Temperature Protection (OTP)

Protection against over-temperature conditions.

Fan Failure Protection

Detection and handling of power supply internal fan failures.

Power Supply Management

Features related to power supply management and communication.

Power Supply Management Controller (PSMC)

Details on PSMC compatibility, addresses, and related documents.

Sensor Accuracy

Smart On Function

PMBus Command for Smart On

Smart Standby Power Supply Operating State

Enabling the Smart On Function

Reliability, Warranty, and Service

Mean Time Between Failures (MTBF)

Thermal Management

Thermal Operation and Configuration Requirements

Guidelines for operating within maximum thermal limits and configuration.

Thermal Management Overview

Components and strategies for maintaining airflow and system cooling.

Fan Speed Control

BMC support for monitoring and controlling fan speed (RPM).

Programmable Fan PWM Offset

Hot-Swap Fans

Fan Redundancy Detection

Thermal and Acoustic Management

Thermal Sensor Input for Fan Speed Control

Using IPMI sensors as input for fan speed control algorithms.

System Fans

Power Supply Module Fans

System Storage and Peripheral Drive Bay Overview

Front Mount Drive Support

System Fan RVI and HDD Performance

External Hot Swap Drive Carriers

12x3.5-inch Drive Hot-Swap Backplane Overview

12G Mini SAS HD 12 Port Backplane

Front Control Panel and I/O Panel Overview

I/O Panel Features

Control Panel Features

PCIe Riser Card Support

Riser Card Assembly

Riser Card Options

Intel I/O Module Support

Basic and Advanced Server Management Features

Dedicated Management Port

Embedded Web Server

Web server and GUI for BMC manageability, including supported browsers.

Advanced Management Feature Support (RMM4 Lite)

Features enabled by the optional Intel RMM4 Lite module, including KVM.

Keyboard, Video, Mouse (KVM) Redirection

Remote KVM access and control over LAN for server management.

Remote Console

Functionality and requirements for the Remote Console Java applet.

Media Redirection

Mounting remote IDE, USB CD-ROM, floppy, or USB flash disk as remote devices.