User's Manual

Hardware Guide DM870 Core-2
app_HwGuide_DM870-Core2.doc
CONFIDENTIAL
Version 1.2 – 04. Jun. 2008 page 4/5
BridgeCo AG – Ringstrasse 14 – CH-8600 Dübendorf – Tel: + 41 (44) 802 33 33 – Fax:+ 41 (44) 802 33 39 – [e-mail] – www.bridgeco.com
SODIMM Module Connector
The DM870 Core-2 module uses a 200-pin SODIMM connector (1.8V type, 0.6 mm pitch, Jedec MO-224
outline) as an interface to the main board.
Example sockets: AMP 1565917-4
FCI 10033853-052FSLF
Molex 48213-1100
The pinout and signal names are shown on the next page. The following table provides an overview for
the most important control and interface signals:
Signal(s) Pin(s) Description
VIN 7,8,9,10 Input voltage; +5V ±5%
VOUT 27,28,
29,30
Stabilized +3.3V ±5% power supply for peripheral circuits; max. 150 mA
SPI_MOSI,
SPI_MISO,
SPI_CLK
SPI_NCS0, 1
11
13
15
12,14
SPI bus from DM870’s SPI controller.
The signals are shown in master-mode configuration, but they can be
configured for slave-mode by software.
RXD1, TXD1 23,25 3.3V logic level UART I/Os for the debug UART.
Provide external RS-232 transceiver to connect to a PC’s COM port.
NRESET 26 Low-active input to reset the module;
internal 10K pull-up
NPOWERDOWN 42 Low-active input to shut down the module’s power supply;
internal 15K pull-up
NPD_RF 62 Low-active input to shut down the power for the 802.11 Rf part;
internal 10K pull-up
AOUTL+/- 59,61
AOUTR+/- 63,65
Differential stereo output from PWM-DAC.
BIST activate 72 Low-active input to invoke the production BIST;
DM870-internal pull-up
TEST1 78 Low-active input to invoke DM870 test mode;
internal 10K pull-up
Factory Reset 81 High-active input to reset the configuration;
DM870-internal pull-down
IR input 83 Infrared sensor input. This is a Schmitt-Trigger input and can handle interrupt
inputs with slow slopes.
ETH_NRESET 85 Low-active reset for the on-board ethernet phy. This output is driven by the
DM870 and is not suited for other purpose.
SDA, SCL 87,89 I2C bus created by GPIO-14 and GPIO-13.
No internal pull-ups; if I2C is to be used, please add also the proper pull-up
resistors.
VPP 130 Voltage input to allow programming of DM870’s OTP. Leave unconnected for
normal operation.
FCLE, FALE 132,134 Boot mode inputs. The module uses a 4K7 pull-up on FCLE and a 4K7 pull-
down resistor to boot from the on-board NAND flash.
Leave unconnected for normal operation.
ETH_LED_ACT
ETH_LED_SPEED
160
162
3.3V push-pull outputs (max. ±12mA) to drive the ethernet LEDs.
A low-level indicates 100Mbps mode and activity respectively.