Interface Masters TAHOE 8824 Manuel utilisateur
Interface Masters Technologies Inc. Confidential & Proprietary
Tahoe 8824 User Guide
Rev: 01
09/15/2017
Page 1 OF 34
User Guide
for
TAHOE 8824
Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017
Page 2 OF 34
CONTENTS
1. INTRODUCTION............................................................................................................ 6
1.1 Product Description ..................................................................................................... 6
1.2 Standard Features........................................................................................................ 6
1.3 Functional Diagram..................................................................................................... 7
1.4 Physical Layout for System .......................................................................................... 8
2. MAJOR COMPONENTS............................................................................................... 10
2.1 CN82xx/CN83xx –Processor..................................................................................... 10
2.2 DDR4 DRAM Controller............................................................................................ 11
2.3 eMMC......................................................................................................................... 12
2.4 SPI .............................................................................................................................. 13
2.5 SERDES - QLMs/DLMs ............................................................................................. 14
2.6 USB 3.0....................................................................................................................... 15
2.7 UART Interface........................................................................................................... 16
2.8 I2C Interface............................................................................................................... 17
2.9 SMI interface.............................................................................................................. 18
2.10 P Bus interface ......................................................................................................... 19
3 CPLD................................................................................................................................ 20
3.1 Access Interface.......................................................................................................... 20
3.2 LED Control............................................................................................................... 20
3.3 Boot Strap................................................................................................................... 20
3.4 Boot Devices............................................................................................................... 21
3.4.1 SPI NOR Flash..................................................................................................... 21
3.4.2 SD card ................................................................................................................ 21
3.4.3 eMMC................................................................................................................... 21
3.5 Selecting Boot Device................................................................................................. 21
4 ETHERNET PHYS............................................................................................................ 22
Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017
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4.1 VSC8221 –SGMII to 1000Base-T PHY................................................................ 22
4.2 VSC8257 –Quad XFI to SFI PHY........................................................................ 23
4.3 NVMe SSD............................................................................................................. 24
5 I2C PERIPHERALS.......................................................................................................... 25
5.1 I2C Bus 0 Peripherals........................................................................................... 25
5.1.1 DDR4 SPD......................................................................................................... 25
5.2.1 ADM1032ARZ - Temperature Sensor.................................................................. 26
5.2.2 MCP7940N - Real Time Clock............................................................................. 26
5.2.3 EEPROM.............................................................................................................. 26
6 IO MODULE..................................................................................................................... 27
7 POWER SUPPLY.............................................................................................................. 28
7.1 Power Consumption.............................................................................................. 28
7 COOLING FAN............................................................................................................. 29
8 ENCLOSURE................................................................................................................ 30
8 CUSTOMER SUPPORT................................................................................................... 31
8.1 Technical Assistance............................................................................................. 31
8.2 Life Support Policy................................................................................................ 31
8.3 Warranty ............................................................................................................... 32
Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017
Page 4 OF 34
List of Figures
Figure 1. Tahoe 8824 Block Diagram............................................................................................ 7
Figure 2, DRAM controller Functional diagram ......................................................................... 11
Figure 3, TAHOE 8824 eMMC Interface..................................................................................... 12
Figure 4, TAHOE 8824 SPI Flash................................................................................................ 13
Figure 5, TAHOE 8824 USB 3.0 Diagram................................................................................... 15
Figure 6, TAHOE 8824 UART Interface...................................................................................... 16
Figure 7, TAHOE 8824 TWSI Interface ....................................................................................... 17
Figure 8, TAHOE 8824 SMI Interface Diagram.......................................................................... 18
Figure 9, TAHOE 8824 P Bus Functional Diagram.................................................................... 19
Figure 10, TAHOE 8824 CPLD Functional Diagram ................................................................. 20
Figure 11, TAHOE 8824 SGMII Interface ................................................................................... 22
Figure 12, TAHOE 8824 XFI to SFP interface............................................................................ 23
Figure 13, TAHOE 8824 NVMe Interface.................................................................................... 24
Figure 14, TAHOE 8824 I2C peripherals Diagram..................................................................... 25
Figure 15, TAHOE 8824 IO Module............................................................................................ 27
Figure 16, Cooling Fan Functional diagram............................................................................... 29
Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017
Page 5 OF 34
List of Tables
Table 1, Boot Device Register ...................................................................................................... 21
Table 2, Boot Device Bits ............................................................................................................. 21
Table 3, Input Power Supply......................................................................................................... 28
Table 4, Output Power Supply...................................................................................................... 28
Table 5, Dimensions of TAHOE 8824 .......................................................................................... 30
Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017
Page 6 OF 34
1. Introduction
1.1 Product Description
The TAHOE 8824 is a 1U network processing platform designed for enterprise
market. TAHOE 8824 is based on the Cavium 64-bit ARM technology. It supports
CN82xx/83xx family of processors. TAHOE 8824 features an optional swappable IO
module that supports either Eight ports of 10G or two ports of 40G.
1.2 Standard Features
•24 CN ARM64TM III processor cores. Core frequency up to 1.8GHz.
•72-bit of DDR4 memory with ECC
•4GB eMMC Interface
•SPI NOR Flash memory
•SD Card slot
•One M.2 NVMe SSD drives
•One on-board 1000Base-T Ethernet port
•Four on-board 10Gbps SFP+ ports
•Eight 10Gbps ports or two 40Gbps ports
•Two USB 3.0 Type A ports
•RJ45 RS232 serial port
•Four hot replaceable fans
•Two redundant hot swappable power supplies
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TAHOE 8824 User Guide
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09/18/2017
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1.3 Functional Diagram
The below functional diagram of TAHOE 8824 Board.
Figure 1. TAHOE 8824 Block Diagram
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TAHOE 8824 User Guide
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1.4 Physical Layout for System
Figure 2, Front view of TAHOE 8824
Figure 3, Top view of TAHOE 8824
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TAHOE 8824 User Guide
Rev: 01
09/18/2017
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Figure 4, Side View of TAHOE 8824
Figure 5, Rear view of TAHOE 8824
Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017
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2. Major Components
2.1 CN82xx/CN83xx –Processor
The main CPU of the TAHOE 8824 is CN82xx/CN83xx, which is a multicore (up
to 24) CNARM64TM III processor that’s part of the Octeon TX family. The CN82xx has
one 72-bit DRAM controllers that can support DDR4, while the CN83xx has two
controllers. In addition, both CN82xx and CN83xx has several SERDES that can be
configured as various Ethernet interfaces, SATA and PCI-e.
The following is a list of interfaces that is provided by the CPU:
➢72-bit wide DDR4 module
➢eMMC Interface
➢SPI Interface
➢QLM SERDES blocks
➢Three DLM SERDES blocks
➢Two USB 3.0 host ports
➢Two UART Interface
➢Two TWSI bus (I2C)
➢Two SMI/MDIO bus
➢PBus (GPIOs)
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