CSB502SSD Raspberry Pi Solid State Drive Shield Hardware Reference Manual 2016 PI 2 Design

Transcription

1 CSB502SSD Raspberry Pi Solid State Drive Shield Hardware Reference Manual 2016 PI 2 Design PAGE 1

2 Table of Contents 1 Warranty Operating Specifications CSB502SSD Operating specifications Overview Introduction Block Diagram On-Board Devices Overview CSB502SSD I2C Bus Devices DS1339 Real Time Clock DS1339 RTC Notes AA32T ID EEPROM AA02T EEPROM Notes USB Devices USB Hub Notes PL2571 USB2.0 to SATA Controller PL2571 Notes Ogemray GWF-3M08 WiFi Module GWF-3M08 Notes Bi-Color Status LED Bi-Color Status LED Notes Raspberry PI GPIO Overview Raspberry PI GPIO Notes CSB502SSD Software Overview D Board Renderings Overview Photos Document Revisions Ordering Information Valid Part Numbers Errata Overview List of Tables Table 1 CSB502SSD Operating Specifications... 4 Table 2 CSB502SSD I2C Bus Devices... 7 Table 3 Raspberry PI to DS1339 RTC Connections... 7 Table 4 Raspberry PI to 24AA32T EEPROM Connections... 8 Table 5 USB Hub Connections... 9 Table 6 GWF-3M08 Connections Table 7 Bi-Color LED Connections Table 8 CPU GPIO Pin Assignments Table 9 Document Revisions Table 10 Ordering Information List of Figures Figure 1 CSB502SSD Block Diagram... 6 Figure 2 CSB502SSD Top Side Photo Figure 3 CSB502SSD Bottom Side Photo PAGE 2

3 1 WARRANTY The enclosed product ("the Product"), a part of the Pi 2 Embedded (a division of PI 2 Design) Single Board series, is warranted by PI 2 Embedded for a period of one year for reasonable development, testing and use, all as further described and defined below. This warranty runs solely to the individual or entity purchasing the Product and is not transferable or assignable in any respect. This warranty is valid only for so long as the product is used intact as shipped from PI 2 Design. Any attempt or effort to alter the Product, including but not limited to any attempt to solder, de-solder, unplug, replace, add or affix any part or component of or onto the Product, other than components specifically intended for the user to plug and unplug into appropriate sockets and/or connectors to facilitate user programming, development and deployment, all as specifically described and authorized in this Product Hardware Reference Manual, shall void this warranty in all respects. Coverage under this warranty requires that the Product be used and stored at all times in conditions with proper electrostatic protection necessary and appropriate for a complex electronic device. These conditions include proper temperature, humidity, radiation, atmosphere and voltage (standard commercial environment, 0C to +70C, <60%RH). Any Product that has been modified without the express, prior written consent of PI 2 Embedded is not covered by this warranty. The use or connection of any test or bus connector, adapter or component with any device other than a PI 2 Embedded connector or adapter shall void this warranty and the warranty of all other components, parts and modules connected to the rest of the system. PI 2 Embedded shall not be responsible for any damage to the Product as a result of a customer's use or application of circuitry not developed or approved by PI 2 Embedded for use on or in connection with the Product. This warranty does not cover defects caused by electrical or temperature fluctuations or from stress resulting from or caused by abuse, misuse or misapplication of the Product. Any evidence of tampering with the serial number on the Product shall immediately void this warranty. This Product is not intended to be used on or embedded in or otherwise used in connection with any life-sustaining or life-saving product and this warranty is not applicable nor is PI 2 Embedded liable in any respect if the Product is so used. Notwithstanding anything to the contrary herein, PI 2 Embedded expressly disclaims any implied warranty of merchantability or implied warranty of fitness for a particular purpose in connection with the manufacture or use of the Product. PAGE 3

4 2 OPERATING SPECIFICATIONS 2.1 CSB502SSD OPERATING SPECIFICATIONS The CSB502SSD conforms to the following specifications: Specification Dimensions Weight Value 85mm x 56mm Full Size Raspberry PI Shield ~10g (not Including SSD) Storage Temperature -20C to +85C Operating Temperature Humidity Input Voltage (VIN) Power Consumption 0C to +70C (not including SSD) 0% to 95% RH, Non-Condensing +8V to +24V, Nominal +12V, 1A Peak 1W Typical, 2W Maximum (excludes SSD, Raspberry Pi, and USB) Table 1 CSB502SSD Operating Specifications PAGE 4

5 3 OVERVIEW 3.1 INTRODUCTION The CSB502SSD, designed and manufactured by PI 2 Embedded is a professional I/O Shield designed for the low cost Raspberry Pi (RPi 2) computer. This shield converts one RPi 2 USB Host Port to a high capacity msata SSD Drive (up to 1TB), Dual USB 2.0 Host Ports and b/g/n WiFi w/soft-ap Mode support. The major features of the CSB502SSD are as follows: FORM FACTOR Full Size Raspberry Pi I/O Shield with 40-Pin mating connector. Stacking and Non-Stacking versions are available. USB PORTS Two USB2.0 Type A 1.5A power) for additional USB expansion. SSD PL2571 Controller and msata Socket for up to 1TeraByte on-board Storage. WiFi GWF-3M08 Module (Based on Ralink RT5370) provides b/g/n for up to 150Mbps. On-Module IPEX connector allows for optimal antenna placement. RTC WITH BATTERY DS1339 Real Time Clock with 16mm Coin Cell Backup and Alarm. TEMP SENSOR 1-Wire DS18B20 Temperature Sensor mounted below SSD to monitor health of drive. Additionally the DS18B20 has a unique 64-Bit ID that can be used to identify the shield for advanced Asset Management. ON-BOARD POWER SUPPLY Wide-Input 10A powers all peripherals plus the RPi 2. Additional 5-Pin Header can be used to power the Pi Foundation 7" Touch LCD w/i2c. 3.2 BLOCK DIAGRAM Refer to the following figure for a block diagram of the CSB502SSD SOM. PAGE 5

6 5A Power Brick USB-A to Micro USB-B Patch Cable 2.5MM DC Jack USB MICRO-B Backpower Protection Circuit USB2514 HUB +8V to +24V Input 10A Switching Supply 3A Switching Supply Dual 1.5A Power Switch USB-A HOST USB-A HOST USB-A HOST USB-A HOST UPSTREAM PORT HOST PORT 1 HOST PORT 2 HOST PORT 3 HOST PORT 4 USB Type-A USB Type-A 40-Pin Expansion Header 10/100 RJ45 w/transformer +5V GPIO I2C ID I2C GPIO Extended Height 40-Pin Socket USB Port SATA Port PL2571 SATA Controller 24AA32T EEPROM Bi-Color Status LED msata 5mm Socket 32GB to 1TB 1-Wire DS18B20 Temp. Sensor w/64-bit ID DS1339 Real Time Clock OGEMRAY GWF-3M b/g/n 5-Pin Header IPEX (U.FL) Antenna Jack Raspberry Pi 2 HDMI CSB502SSD BLOCK DIAGRAM Figure 1 CSB502SSD Block Diagram PAGE 6

7 4 ON-BOARD DEVICES 4.1 OVERVIEW The CSB502SSD interfaces to the Raspberry PI via the 40-Pin GPIO connector as well as one USB host port (using USB-A male to USB-Micro-B cable). This section describes in detail the devices located on the CSB502SSD as seen from these two interfaces. 4.1 CSB502SSD I2C BUS DEVICES The following table describes the CPU I2C Bus usage of the CSB502SSD. Refer to the respective device documentation for more detail. I2C Bus 7-Bit I2C Address Description I2C 0x50 DS1339 Real Time Clock ID_I2C 0x50 32Kbit EEPROM for ID usage Table 2 CSB502SSD I2C Bus Devices 4.1 DS1339 REAL TIME CLOCK A Dallas/Maxim DS1339 provides a battery backed Real-Time Clock. This device sits on the Raspberry PI I2C bus at address 0x68. Additionally, the interrupt output of the DS1339 connects to a Raspberry PI GPIO to allow the user to set alarms. The signals used to interface with the DS1339 are shown in the following table. DS1339 Signal Raspberry PI Signal Description SCL SCL I2C Bus Clock SDA SDA I2C Bus Data *INT GPIO20 Interrupt Output from DS1339 VBAT - Coin Cell Battery Input to DS1339 Table 3 Raspberry PI to DS1339 RTC Connections PAGE 7

8 4.1.1 DS1339 RTC NOTES 1. The CSB502SSD is fitted with a CR1620 Battery rated at 75ma/hr. This is a non-rechargeable battery. It will provide back-up power (when the Raspberry PI is non-powered) for 10+ years. Temperature and humidity beyond the ratings for the CSB502SSD can shorten this life considerably. 2. By default the DS1339 RTC interrupt is set to a 1 second square wave with the output disabled. Software should setup the interrupt function for the desired functionality. Refer to the DS1339 data sheet for more information. 3. The DS1339 supports a rechargeable battery using an internal trickle charger. This is disabled by default and should only be used if the coin cell has been replaced with a verified rechargeable battery. Enabling the trickle charger (valid only when the 3.3V rail is on) with a primary (nonrechargeable) coin cell will not damage the coin cell, but may drain it faster AA32T ID EEPROM A Microchip 24AA32T EEPROM provides user programmable EEPROM. It is on the Raspberry PI ID I2C Bus at I2C address 0x50. The signals used to interface with the 24AA32T are shown in the following table. 24AA32T Signal CPU Signal Description SCL ID_SCL I2C Bus Clock SDA ID_SDA I2C Bus Data Table 4 Raspberry PI to 24AA32T EEPROM Connections AA02T EEPROM NOTES 1. By default the ID EEPROM delivered with the CSB502SSD is blank. 4.3 USB DEVICES The CSB502SSD uses a Microchip USB Port Hub to expand the USB interface to four downstream devices. These devices are listed in the following table. PAGE 8

9 USB Port Device Description 0 RPi Upstream port from Raspberry Pi via USB-A to USB Micro-B cable 1 PL2571B USB2.0 to SATA Controller 2 GWF-3M n/g/n WiFi Module 3 USB-A 0 USB Host Port 0 4 USB-A 1 USB Host Port 1 Table 5 USB Hub Connections USB HUB NOTES 1. USB Host Ports 0 and 1 (Hub ports 3 and 4) are provide with 5V each via an AP2192 Dual Power Switch. The maximum current per port is 1.5A. 2. Over Current Error signals from the AP2192 are routed to the USB2514 and reported to the Raspberry Pi via standard USB messaging. 4.4 PL2571 USB2.0 TO SATA CONTROLLER The CSB502SSD is provided with a PL2571 SATA controller from Prolific Corp. The PL2571 implements a standard USB Storage interface and is supported by most Operating Systems by default PL2571 NOTES 1. The PL2571 reports USB Vendor ID 0x067B and Product ID 0x A 5.2mm msata socket is connected to the PL A Blue Surface Mount LED (D5) indicates SATA activity. 4.5 OGEMRAY GWF-3M08 WIFI MODULE The CSB502SSD uses the OGEMRAY GWF-3M b/g/n module. This module is based on the Ralink RT5370 chip. The module has a u.fl (also known as I-Pex) antenna jack to allow for optimal external antenna placement. The GWF-3M08 is connected via USB, but uses two GPIO s for control as shown in the following table. PAGE 9

10 GWF-3M08 Signal Connection Description USB D+/- USB2514 USB Hub Port 2 WPS RPi GPIO16 A high places the GWF-3M08 in WPS mode allowing the Raspberry PI to connect to WiFi access points via the WPS protocol TXEN RPi GPIO25 A high enables transmitting by the GWF-3M08. A low true disables the transmit circuitry thus reducing power consumption. Table 6 GWF-3M08 Connections GWF-3M08 NOTES 1. The GWF-3M08 reports USB Vendor ID 0x148F and Product ID 0x5370, these are the Ralink RT5370 ID s. 2. A Yellow Surface Mount LED (D4) indicates WiFi Link Status and Activity. 4.6 BI-COLOR STATUS LED The CSB502SSD provides a Bi-Color (Green/Yellow) surface mount LED (D1) for user programmable status. This LED is connected to the RPi 2 GPIO as shown in the following table. LED RPi 2 GPIO Description GRN- GPIO27 Green Cathode, low illuminates the Green LED. YEL- GPIO17 Yellow Cathode, low illuminates the Yellow LED. GRN+ YEL+ - Connected to 3.3V via 330 ohm resistor Table 7 Bi-Color LED Connections BI-COLOR STATUS LED NOTES 1. The current LED used on the CSB502SSD allows both the Yellow and PAGE 10

11 Green LED s to be enabled simultaneously. This use is unsupported and may not be available on future versions. PAGE 11

12 5 RASPBERRY PI GPIO 5.1 OVERVIEW The CSB502SSD uses a number of signals from the Raspberry Pi GPIO header for control and status purposes. This usage is defined in the following table. RPi 2 PIN DIR AF PUP/ PDN CSB502SSD Name Description/Notes Raspberry PI +3.3V - Unused V +5V Power to the Raspberry PI 3 I/O Y PUP I2C_SDA I2C Bus Data V +5V Power to the Raspberry PI 5 OUT Y PUP I2C_SCL I2C Bus Clock GND GPIO4/GCLK - Unused GPIO14/TXD - Unused GND GPIO4/GCLK - Unused 11 OUT - - *Y_LED GPIO17 Low True Yellow Enable for Green/Yellow LED GPIO18/GEN1 - Unused 13 OUT - - *G_LED GPIO27 Low True Green Enable for Green/Yellow LED GND GPIO22/GEN3 - Unused 16 I/O - PUP 1-WIRE GPIO23/GEN4 - DS18B20 Temp Sensor PAGE 12

13 RPi 2 PIN DIR AF PUP/ PDN CSB502SSD Name Description/Notes Raspberry PI +3.3V - Unused GPIO24/GEN5 - Unused GPIO10/SPI_MOSI - Unused GND GPIO9/SPI_MISO - Unused 22 OUT - - WI_TXEN GPIO25 WiFi Transmit Enable 23 OUT - - SPI_CLK GPIO11/SPI_CLK - Unused GPIO8/*SPI_CS0 - Unused GND GPIO7/*SPI_CS1 - Unused 27 I/O Y - ID_SDA ID I2C Bus Data 28 OUT Y - ID_SCL ID I2C Bus Clock GPIO5 - Unused GND GPIO6 - Unused 32 IN - PUP VG_PG GPIO12 Power Supply Good GPIO13 - Unused GND GPIO19 - Unused 36 OUT - - WI_WPS GPIO16 WiFi WPS Enable GPIO26 - Unused 38 IN - PUP *RTC_INT GPIO20 - DS1339 RTC Interrupt PAGE 13

14 RPi 2 PIN DIR AF PUP/ PDN CSB502SSD Name Description/Notes GND GPIO21 - Unused Table 8 CPU GPIO Pin Assignments RASPBERRY PI GPIO NOTES 1. Direction (DIR) is from the point of view of the Raspberry PI. 2. Y in the Alternate Function (AF) column indicates that the use of this pin requires the pin to be assigned to the function as defined by the Raspberry PI specifications. 3. PUP/PDN indicates if the GPIO should have its associated Pullup (PUP) or Pulldown (PDN) resistor enabled. 4. An asterisk * at the beginning of the name indicates a low true signal. PAGE 14

15 6 CSB502SSD SOFTWARE 6.1 OVERVIEW Due to the various resources interfaced on the 502IoT, both internal and external to the Raspberry Pi, it is necessary to initialize a large number of CPU registers and external devices before correct operation can begin. These values and their proper sequencing are beyond the scope of this document. See our web site at or us at support@pi2design.com for example operating and initialization code. PAGE 15

16 7 3D BOARD RENDERINGS 7.1 OVERVIEW This section provides the top and bottom 3D renderings pf the CSB502SSD. 7.2 PHOTOS The top and bottom layout of the CSB502SSD is shown in the following figures (for illustrative purposes only). PAGE 16

17 Figure 2 CSB502SSD Top Side Photo PAGE 17

18 Figure 3 CSB502SSD Bottom Side Photo PAGE 18

19 8 DOCUMENT REVISIONS Date Revision Change 11/23/2015 P3.0 Preliminary Release 4/13/2016 P3.1 Corrections to GPIO Table Table 9 Document Revisions PAGE 19

20 9 ORDERING INFORMATION 9.1 VALID PART NUMBERS The following table defines the valid ordering numbers for the CSB502SSD. Note that the items in BOLD are standard, normally stocked items. All others may be subject to minimum order quantities and/or additional lead times. Order Number CSB502SSD CSB502SSD-KIT Description CSB502SSD Shield Only CSB502SSD with Micro-USB to USB-A cable, 5A Power Supply, WiFi PCB Antenna and Mounting Hardware Table 10 Ordering Information PAGE 20

21 10 ERRATA 10.1 OVERVIEW There are no known errata for CSB502SSD Rev. P3. PAGE 21