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DIMM.AM335x (Rev3) 5/24 2 Block Diagram The following figure shows the block diagram of the DIMM-AM335x. DIMM-AM335x SODIMM conne ctor 200 p in 10/100 Mbit EthernetUSB 2.0 HostUSB 2.0 FunctionLCD InterfaceSSI Audio Inter faceSD-CardUART-A, RS232 UART-B, LVTTL UART-C, LVTTL UART-D, LVTTL 2 x CAN, LVT...

DIMM.AM335x (Rev3) 6/24 3 Functional Description 3.1 Processor AM335x The DIMM-AM335x module is either based on the CPU AM3352 or AM3354from Texas Instruments. It utilizes an ARM® Cortex-A8 core running at up to 720 MHz. Compared to the AM3352 the CPU AM3354 includes an additional SGX530 3D graphics...

DIMM.AM335x (Rev3) 7/24 3.1.2 Boot Mode The processor AM335x has an integrated Boot ROM which supports 31 different boot configurations. Each configuration consists of a sequence of 4 different boot devices that are checked in series for valid boot data. The configuration is selected by the five con...

DIMM.AM335x (Rev3) 8/24 Hardware write protection of the NOR flash is realized by the port pin GPIO3_4 of the processor. A low level protects the flash device. During and after Reset the pin is driven low by the processor. Besides the hardware protection the chip also supports a software protection....

DIMM.AM335x (Rev3) 9/24 The signal LINK_LED# indicates if data packages are transferred. If a link is established every packet causes an 80 ms long low pulse. The signal SPEED_LED# indicates the transfer speed of the connection. Low = 100 Mbit/s, high = 10 Mbit/s. A 1:1 transformer with center taps ...

DIMM.AM335x (Rev3) 10/24 3.8.2 LCD interface The following table describes the function of the data and control lines in RGB mode. Signal Description LCD_D[23:0] Colour data, mapping according to the following table LCD_VSYNC Vertical synchronization signal LCD_HSYNC Horizontal synchronization signa...

DIMM.AM335x (Rev3) 11/24 3 additional GPIO output signals are provided to control the power supply of the display and the backlight. Signal Description LCD_VEPWC Optional display power control output, driven by GPIO1_29 LCD_VCPWC Optional display power control output, driven by GPIO2_27 LCD_DON Disp...

DIMM.AM335x (Rev3) 12/24 The control signals and the lower 4 data lines of interface MMC2 are routed to the SDC1 interface of the SODIMM connector. Since the interface SDC2 of the SODIMM connector is unused the upper 4 data lines of the MMC2 interface are routed its data pins. An SDC socket with 4 d...

DIMM.AM335x (Rev3) 13/24 3.15 SPI Interface The SPI1 interface of the AM335x is available at the SODIMM connector. The characteristics of the interface can be individually controlled by software. 3.16 Digital and Analog I/Os 10 digital GPIO pins are provided normally at the SODIMM connector. All but...

DIMM.AM335x (Rev3) 14/24 The LED is controlled by the two GPIO pins of the AM335x. Pin GPIO2_4 drives the green LED, pin GPIO2_5 drives the red LED. Watch that the green LED is active low while the red LED is active high. This gives the following colour table: LED GPIO2_4 GPIO2_5 green 0 0 yellow 0 ...

DIMM.AM335x (Rev3) 15/24 4 Connectors 4.1 J1, SODIMM Type 200 pin SODIMM edge connector, 2.5V keying Pin Signal Interface Signal Pin 1 SPEED_LED# Ethe rne t US B H os t USBH_PEN# 2 3 ETH_TDP USBH_OC# 4 5 ETH_TDM USBH_DM 6 7 GND USBH_DP 8 9 ETH_RDP US B De vi ce USBF_VBUS 10 11 ETH_RDM USBF_DM 12 13 ...

DIMM.AM335x (Rev3) 17/24 139 n/c n/c 140 141 n/c n/c 142 143 n/c n/c 144 145 n/c n/c 146 147 n/c n/c 148 149 n/c n/c 150 151 n/c n/c 152 153 n/c n/c 154 155 n/c n/c 156 157 n/c n/c 158 159 GND n/c 160 161 +3V3 Power GND 162 163 n/c D a ta D [15:0] n/c 164 165 n/c n/c 166 167 n/c n/c 168 169 n/c n/c ...

DIMM.AM335x (Rev3) 19/24 5 Signal Characteristics Abbreviations: AI analogue input AO analogue output A I/O analogue bidirectional I input O totem pole output OD open drain output I/O bidirectional PU xK pull-up resistor, x KΩ PD xK pull-down resistor, x KΩ SR xR series resistor x Ω IPD processor in...

DIMM.AM335x (Rev3) 22/24 6 Technical Characteristics 6.1 Electrical Specifications Supply voltage 3.3 V, +/-5% Current consumption 0.6 A max. 6.2 Environmental Specifications Operating temperature Storage temperature Standard: 0°C ... +70°C -ET: -40°C ... +85°C -40 ... +125°C Relative humidity 0 ......

DIMM.AM335x (Rev3) 23/24 6.4 Dimensional Drawing 6 3 .6 6 7 .6 20.0 45.0 6.0 36.5 R 2 .0 D 2 ,3 1 .0 4.0 1 5 .3 5 P in 1 P in 3 9 P in 1 9 9 1 .0 m a x . 6 ,0 m a x . 2 ,0 bo tto m s id e to p s id e J2 D 2 .8 J1

DIMM.AM335x (Rev3) 24/24 References [1] AM335x ARM® Cortex TM –A8 Microprocessors (MPUs) Datasheet SPRS717C – October 2011 – Revised April 2012 Texas Instruments [2] TPS65910 Integrated Power Management Unit Top Specification Datasheet SWCS046L - March 2010 - Revised January 2012 Texas Instruments