Davinci Board - GE LOGIQ 100 PRO Technical Publication

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GE H
EALTHCARE
D
5305880-100, R
IRECTION
5-5-2

Davinci Board

The Davinci CPU board uses TMS320DM6446 chip that contains an ARM Processor, DSP and
Video processors into a single chip.
The Major functionalities & corresponding implementation is described below.
1) System Memory - 256MB DDR2 Memory.
2) Program Storage – 16 Megabytes of NOR Flash is used to store the Boot loader code, Kernel,
and Application software.
3) Image Storage – 64 Megabytes of NAND Flash is used to store the User Images. It is also
used to store a part of Application software and operating system code.
4) Keyboard interface (Ultrasound keyboard I/f, PS 2 trackball interface, Gain Controller
interface). Ultrasound Keyboard is interfaced to Davinci CPU PWA.The serial communication
occurs at 9600-baud rate.
Optical Trackball TB_CLK and TB_DATA pins are connected to Davinci CPU PWA. Trackball
supports Ps2 standard.
GAIN Encoder - GAIN_CCW and GAIN_CW pins of the gain encoder are connected to the GPIO
pins of Davinci CPU.
5) On Screen Display (OSD), Video Out and Monitor Display - The DAVINCI CPU generates the
OSD along with the image in NTSC or PAL video output format (standard) to the Video Out and
Monitor connector.
6) USB port interface - The Davinci CPU PWA provides one USB 2.0 Host connector. This port is
used to interface Thermal Printer, DeskJet printer as well as to transfer the image to Memory
stick in JPEG format.
7) NTSC and PAL setting - A Dipswitch is provided to select NTSC or PAL standard. This switch
is available on Davinci CPU PWA.
8) Real Time Clock (RTC) - RTC chip is provided on Davinci CPU PWA that acts as a timekeeper
i.e. it maintains the system clock and date.
Ap p r o v e d Do c u m e n t - 5 3 0 5 8 8 0 - 1 0 0 T PH_ r 3 . p d f Pa g e 1 0 0 o f 1 9 7
3
EVISION
LOGIQ™ 100 PRO S
-
M
ERVICE
ANUAL
Page 5-13

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