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Created page with '== Frequently Asked Questions and Their Answers (FAQ) == ---- === Hardware related questions === ==== 1. Is it possible to connect a battery to maintain the real time clock …'
== Frequently Asked Questions and Their Answers (FAQ) ==
----
=== Hardware related questions ===
==== 1. Is it possible to connect a battery to maintain the real time clock in the IGEPv2 Board? ====
Battery backup is not implemented on IGEPv2 RA and RB.
User can use i2c external rtc or connect externally a super-cap/rechargable battery on R768 pins.
R768 is 0 Ohm resistor connected between GND and BKBAT (M14) input from TPS65950.
==== 2. How is it connected Bluetooth chipset to OMAP? ====
UART2.
==== 3. How many UARTs are available on IGEPv2 board? ====
OMAP3 has 3 UARTS:
<pre>UART1 --> RS485 on connector J940
UART2 --> bluetooth
UART3 --> debug console on connector J960
</pre>
All of this UART are also available on other connectors:
<pre>UART1 --> on connector JA41 without DVI transceiver with CMOS 1v8 logic.
UART1 --> on connector J940 with CMOS 3V3 logic
UART2 --> on expansion connector J990 without bluetooth feature.
UART3 --> on connector JA41 without DVI transceiver with CMOS 1v8 logic.
</pre>
==== 4. Is it available s-video or video composite output on IGEPv2 board? ====
A dual-display interface equips the OMAP3530/25 processor. This display subsystem provides the necessary control signals to interface the memory frame buffer directly to the external displays (TV-set).
Two (one per channel) 10-bit current steering DACs are inserted between the DSS and the TV set to generate the video analog signal. One of the video DACs also includes TV detection and power-down mode. For more information, see the DSS chapter of the OMAP35x Technical Reference Manual.
IGEPv2 board hasn't s-video or video composite output connector, but there are available on the board some test points to implement a fully-functionaly s-video output.
==== 5. Is it possible to config the wireless LAN and bluetooth so they are completely off, and not consuming any power at all? ====
Yes, powerdown and reset are implemented on GPIO_94 and GPIO_95.
==== 6. Could you attach an LCD with LDVS interface to the IGEPv2? ====
You have to translate it to LVDS which is a differential and serialized interface. For example you can use MAX9213 serializer LVDS to translate the parallel interface to LVDS.
==== 7. Is there a way to attach a VGA monitor directly to the IGEPv2? ====
You can use DVI to VGA converter connected to DVI output.
==== 8. Is it possible to connect a CMOS sensor to the IGEPV2 board (ie are the camera signals available on a board connector)? ====
The camera signals are not available on IGEPv2 board.
==== 9. Mini usb OTG must be a MINI A Male? ====
Review the Hardware Reference Manual: Page7: USB 2.0 LS/FS/HS OTG 1 Mini AB USB socket connector (dual slave and host role) – That means you can use MINI-A and MINI-B cable.
==== 10. I would like too to know if the external wifi antena is easy to install? where can I aqcuire a compatible external antena? ====
The JD11 is a GSC connector for the external Wifi interface. It is a MURATA GSC connector, Part number MM9329-2700RA1.
You only have to find a cable that fits with this MURATA connector.
Regarding the antenna, just need a 2.4Ghz Antenna.
==== 11. Is it possible to add analog video output to the IGEPv2 platform? ====
Yes it is possible. There is no connector for S-video, but signals are available on board test points.
<pre>TP400 and TP401 which are located on bottom side, belongs to luminance and chroma so:
TP401 = TVOUT_1R sch signal = PIN 3 S-video connector = Y = luminance
TP400 = TVOUT_2R sch signal = PIN 4 S-video connector= C = chroma
</pre>
==== 12. Which IGEPv2 revision is my board? ====
At this moment, probably it is a IGEPv2-RB. Only few premium costumers have early IGEPv2-RA prototypes boards.
<pre>If it is IGEPv2-RB revision, it could see silkscreen text "IGEP0020-RB1" near J800 (USB Host connector)
</pre>
==== 13. Is it possible to power the IGEPv2 board using USB OTG connector? ====
No, it is not possible.
==== 14. What is the maximun power consumption of the IGEPv2 board ? ====
The power consumption of IGEPv2@600Mhz is between 690 and 720mA
The power consumption of IGEPv2@720Mhz is between 750 and 780mA.
IGEPv2 720MHz has aprox. 15% more power consumption on core and mpu_iva than 600MHZ.
==== 15. What about "Skip erase bad block 124 at 0xf80000" means at bootlog ? ====
Flash devices (nandflash or onenand or ...) have been factory marked with bad blocks.
New bad blocks could appear along flash life, and you should mark
them (or JFFS2 file-system does automatically ).
==== 16. What is the max Ethernet throughput with LAN9221i on IGEPv2?<br> ====
The [http://en.wikipedia.org/wiki/Ethernet ethernet] throughput it's 94-96 M/bits second, [http://www.smsc.com/index.php?tid=145&pid=116 LAN9221i] it's connected direcly to OMAP processor addressable space and dedicated IRQ (no USB, SPI, converters ...). <br>
<pre>[mailto:root@igep root@igep]0020a:~# iperf -c 192.168.3.2
------------------------------------------------------------
Client connecting to 192.168.3.2, TCP port 5001
TCP window size: 25.4 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.3.100 port 59439 connected with 192.168.3.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 113 MBytes 94.6 Mbits/sec</pre>
<br>
=== Software related questions ===
==== 1. Are the sources for the xloader, uBoot and kernel supplied with the IGEPv2 board available? ====
All of them are available on [http://www.igep.es www.myigep.com] if you are a registered user.
==== 2. How do I stop U-Bboot command line at "Hit any key to stop autoboot" prompt ? ====
U-Boot command line is a [[Serial_Debug_Console|serial tty console]]. IGEPv2 normally uses UART3. So, you need send any key to [[Serial_Debug_Console|serial port]] using some serial terminal application.
'''Look up ! ''' Don't press any key of any usb keyboard connected to IGEPv2, you need press any key of your computer keyboard attached to [[Serial_Debug_Console|serial link]] to IGEPv2 ( serial cable + minicom or other serial terminal application )
----
=== Hardware related questions ===
==== 1. Is it possible to connect a battery to maintain the real time clock in the IGEPv2 Board? ====
Battery backup is not implemented on IGEPv2 RA and RB.
User can use i2c external rtc or connect externally a super-cap/rechargable battery on R768 pins.
R768 is 0 Ohm resistor connected between GND and BKBAT (M14) input from TPS65950.
==== 2. How is it connected Bluetooth chipset to OMAP? ====
UART2.
==== 3. How many UARTs are available on IGEPv2 board? ====
OMAP3 has 3 UARTS:
<pre>UART1 --> RS485 on connector J940
UART2 --> bluetooth
UART3 --> debug console on connector J960
</pre>
All of this UART are also available on other connectors:
<pre>UART1 --> on connector JA41 without DVI transceiver with CMOS 1v8 logic.
UART1 --> on connector J940 with CMOS 3V3 logic
UART2 --> on expansion connector J990 without bluetooth feature.
UART3 --> on connector JA41 without DVI transceiver with CMOS 1v8 logic.
</pre>
==== 4. Is it available s-video or video composite output on IGEPv2 board? ====
A dual-display interface equips the OMAP3530/25 processor. This display subsystem provides the necessary control signals to interface the memory frame buffer directly to the external displays (TV-set).
Two (one per channel) 10-bit current steering DACs are inserted between the DSS and the TV set to generate the video analog signal. One of the video DACs also includes TV detection and power-down mode. For more information, see the DSS chapter of the OMAP35x Technical Reference Manual.
IGEPv2 board hasn't s-video or video composite output connector, but there are available on the board some test points to implement a fully-functionaly s-video output.
==== 5. Is it possible to config the wireless LAN and bluetooth so they are completely off, and not consuming any power at all? ====
Yes, powerdown and reset are implemented on GPIO_94 and GPIO_95.
==== 6. Could you attach an LCD with LDVS interface to the IGEPv2? ====
You have to translate it to LVDS which is a differential and serialized interface. For example you can use MAX9213 serializer LVDS to translate the parallel interface to LVDS.
==== 7. Is there a way to attach a VGA monitor directly to the IGEPv2? ====
You can use DVI to VGA converter connected to DVI output.
==== 8. Is it possible to connect a CMOS sensor to the IGEPV2 board (ie are the camera signals available on a board connector)? ====
The camera signals are not available on IGEPv2 board.
==== 9. Mini usb OTG must be a MINI A Male? ====
Review the Hardware Reference Manual: Page7: USB 2.0 LS/FS/HS OTG 1 Mini AB USB socket connector (dual slave and host role) – That means you can use MINI-A and MINI-B cable.
==== 10. I would like too to know if the external wifi antena is easy to install? where can I aqcuire a compatible external antena? ====
The JD11 is a GSC connector for the external Wifi interface. It is a MURATA GSC connector, Part number MM9329-2700RA1.
You only have to find a cable that fits with this MURATA connector.
Regarding the antenna, just need a 2.4Ghz Antenna.
==== 11. Is it possible to add analog video output to the IGEPv2 platform? ====
Yes it is possible. There is no connector for S-video, but signals are available on board test points.
<pre>TP400 and TP401 which are located on bottom side, belongs to luminance and chroma so:
TP401 = TVOUT_1R sch signal = PIN 3 S-video connector = Y = luminance
TP400 = TVOUT_2R sch signal = PIN 4 S-video connector= C = chroma
</pre>
==== 12. Which IGEPv2 revision is my board? ====
At this moment, probably it is a IGEPv2-RB. Only few premium costumers have early IGEPv2-RA prototypes boards.
<pre>If it is IGEPv2-RB revision, it could see silkscreen text "IGEP0020-RB1" near J800 (USB Host connector)
</pre>
==== 13. Is it possible to power the IGEPv2 board using USB OTG connector? ====
No, it is not possible.
==== 14. What is the maximun power consumption of the IGEPv2 board ? ====
The power consumption of IGEPv2@600Mhz is between 690 and 720mA
The power consumption of IGEPv2@720Mhz is between 750 and 780mA.
IGEPv2 720MHz has aprox. 15% more power consumption on core and mpu_iva than 600MHZ.
==== 15. What about "Skip erase bad block 124 at 0xf80000" means at bootlog ? ====
Flash devices (nandflash or onenand or ...) have been factory marked with bad blocks.
New bad blocks could appear along flash life, and you should mark
them (or JFFS2 file-system does automatically ).
==== 16. What is the max Ethernet throughput with LAN9221i on IGEPv2?<br> ====
The [http://en.wikipedia.org/wiki/Ethernet ethernet] throughput it's 94-96 M/bits second, [http://www.smsc.com/index.php?tid=145&pid=116 LAN9221i] it's connected direcly to OMAP processor addressable space and dedicated IRQ (no USB, SPI, converters ...). <br>
<pre>[mailto:root@igep root@igep]0020a:~# iperf -c 192.168.3.2
------------------------------------------------------------
Client connecting to 192.168.3.2, TCP port 5001
TCP window size: 25.4 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.3.100 port 59439 connected with 192.168.3.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 113 MBytes 94.6 Mbits/sec</pre>
<br>
=== Software related questions ===
==== 1. Are the sources for the xloader, uBoot and kernel supplied with the IGEPv2 board available? ====
All of them are available on [http://www.igep.es www.myigep.com] if you are a registered user.
==== 2. How do I stop U-Bboot command line at "Hit any key to stop autoboot" prompt ? ====
U-Boot command line is a [[Serial_Debug_Console|serial tty console]]. IGEPv2 normally uses UART3. So, you need send any key to [[Serial_Debug_Console|serial port]] using some serial terminal application.
'''Look up ! ''' Don't press any key of any usb keyboard connected to IGEPv2, you need press any key of your computer keyboard attached to [[Serial_Debug_Console|serial link]] to IGEPv2 ( serial cable + minicom or other serial terminal application )
