Difference between revisions of "Frequently Asked Questions and Their Answers"
From IGEP - ISEE Wiki
(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 …') |
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| − | + | = Frequently Asked Questions and Their Answers = | |
| − | + | == IGEP v2 hardware related questions == | |
| − | === | + | === Is it possible to connect a battery to maintain the real time clock in the board? === |
| − | + | Battery backup is not implemented on IGEP v2 RA and RB. | |
| − | |||
| − | Battery backup is not implemented on | ||
User can use i2c external rtc or connect externally a super-cap/rechargable battery on R768 pins. | User can use i2c external rtc or connect externally a super-cap/rechargable battery on R768 pins. | ||
| Line 13: | Line 11: | ||
R768 is 0 Ohm resistor connected between GND and BKBAT (M14) input from TPS65950. | R768 is 0 Ohm resistor connected between GND and BKBAT (M14) input from TPS65950. | ||
| − | === | + | === How is it connected Bluetooth chipset to OMAP ? === |
UART2. | UART2. | ||
| − | === | + | === How many UARTs are available? === |
OMAP3 has 3 UARTS: | OMAP3 has 3 UARTS: | ||
| Line 30: | Line 28: | ||
UART3 --> on connector JA41 without DVI transceiver with CMOS 1v8 logic. | UART3 --> on connector JA41 without DVI transceiver with CMOS 1v8 logic. | ||
</pre> | </pre> | ||
| − | === | + | |
| + | === Is it available s-video or video composite output? === | ||
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). | 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). | ||
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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. | 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. | ||
| − | + | IGEP v2 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. | |
| − | === | + | === 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. | Yes, powerdown and reset are implemented on GPIO_94 and GPIO_95. | ||
| − | === | + | === Could you attach an LCD with LDVS interface? === |
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. | 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. | ||
| − | === | + | === Is there a way to attach a VGA monitor directly? === |
You can use DVI to VGA converter connected to DVI output. | You can use DVI to VGA converter connected to DVI output. | ||
| − | === | + | === Is it possible to connect a CMOS sensor (ie are the camera signals available on a board connector)? === |
| − | The camera signals are not available on | + | The camera signals are not available on IGEP v2 board. |
| − | === | + | === 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. | 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. | ||
| − | === | + | === 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. | The JD11 is a GSC connector for the external Wifi interface. It is a MURATA GSC connector, Part number MM9329-2700RA1. | ||
| Line 66: | Line 65: | ||
Regarding the antenna, just need a 2.4Ghz Antenna. | Regarding the antenna, just need a 2.4Ghz Antenna. | ||
| − | === | + | === Is it possible to add analog video output? === |
Yes it is possible. There is no connector for S-video, but signals are available on board test points. | Yes it is possible. There is no connector for S-video, but signals are available on board test points. | ||
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TP400 = TVOUT_2R sch signal = PIN 4 S-video connector= C = chroma | TP400 = TVOUT_2R sch signal = PIN 4 S-video connector= C = chroma | ||
</pre> | </pre> | ||
| − | === | + | |
| + | === Which revision is my board? === | ||
At this moment, probably it is a IGEPv2-RB. Only few premium costumers have early IGEPv2-RA prototypes boards. | 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>If it is IGEPv2-RB revision, it could see silkscreen text "IGEP0020-RB1" near J800 (USB Host connector) | ||
</pre> | </pre> | ||
| − | === | + | |
| + | === Is it possible to power using USB OTG connector? === | ||
No, it is not possible. | No, it is not possible. | ||
| − | === | + | === What is the maximun power consumption? === |
The power consumption of IGEPv2@600Mhz is between 690 and 720mA | The power consumption of IGEPv2@600Mhz is between 690 and 720mA | ||
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The power consumption of IGEPv2@720Mhz is between 750 and 780mA. | The power consumption of IGEPv2@720Mhz is between 750 and 780mA. | ||
| − | + | IGEP v2 720MHz has aprox. 15% more power consumption on core and mpu_iva than 600MHZ. | |
| − | === | + | === 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. | Flash devices (nandflash or onenand or ...) have been factory marked with bad blocks. | ||
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them (or JFFS2 file-system does automatically ). | them (or JFFS2 file-system does automatically ). | ||
| − | === | + | === What is the max Ethernet throughput with LAN9221i? === |
| − | 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 ...). | + | 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 ...). |
<pre>[mailto:root@igep root@igep]0020a:~# iperf -c 192.168.3.2 | <pre>[mailto:root@igep root@igep]0020a:~# iperf -c 192.168.3.2 | ||
------------------------------------------------------------ | ------------------------------------------------------------ | ||
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[ ID] Interval Transfer Bandwidth | [ ID] Interval Transfer Bandwidth | ||
[ 3] 0.0-10.0 sec 113 MBytes 94.6 Mbits/sec</pre> | [ 3] 0.0-10.0 sec 113 MBytes 94.6 Mbits/sec</pre> | ||
| − | |||
| − | == | + | == IGEP v2 software related questions == |
| − | === | + | === Are the sources for the xloader, uBoot and kernel supplied with the IGEPv2 board available? === |
| − | All of them are available on [http:// | + | All of them are available on [http://git.igep.es git.igep.es] if you are a registered user. |
| − | === | + | === How do I stop U-Boot 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. | 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 | + | '''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 ) |
Revision as of 17:14, 24 May 2010
Contents
- 1 Frequently Asked Questions and Their Answers
- 1.1 IGEP v2 hardware related questions
- 1.1.1 Is it possible to connect a battery to maintain the real time clock in the board?
- 1.1.2 How is it connected Bluetooth chipset to OMAP ?
- 1.1.3 How many UARTs are available?
- 1.1.4 Is it available s-video or video composite output?
- 1.1.5 Is it possible to config the wireless LAN and bluetooth so they are completely off, and not consuming any power at all?
- 1.1.6 Could you attach an LCD with LDVS interface?
- 1.1.7 Is there a way to attach a VGA monitor directly?
- 1.1.8 Is it possible to connect a CMOS sensor (ie are the camera signals available on a board connector)?
- 1.1.9 Mini usb OTG must be a MINI A Male?
- 1.1.10 I would like too to know if the external wifi antena is easy to install? where can I aqcuire a compatible external antena?
- 1.1.11 Is it possible to add analog video output?
- 1.1.12 Which revision is my board?
- 1.1.13 Is it possible to power using USB OTG connector?
- 1.1.14 What is the maximun power consumption?
- 1.1.15 What about "Skip erase bad block 124 at 0xf80000" means at bootlog?
- 1.1.16 What is the max Ethernet throughput with LAN9221i?
- 1.2 IGEP v2 software related questions
- 1.1 IGEP v2 hardware related questions
Frequently Asked Questions and Their Answers
Is it possible to connect a battery to maintain the real time clock in the board?
Battery backup is not implemented on IGEP v2 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.
How is it connected Bluetooth chipset to OMAP ?
UART2.
How many UARTs are available?
OMAP3 has 3 UARTS:
UART1 --> RS485 on connector J940 UART2 --> bluetooth UART3 --> debug console on connector J960
All of this UART are also available on other connectors:
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.
Is it available s-video or video composite output?
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.
IGEP v2 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.
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.
Could you attach an LCD with LDVS interface?
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.
Is there a way to attach a VGA monitor directly?
You can use DVI to VGA converter connected to DVI output.
Is it possible to connect a CMOS sensor (ie are the camera signals available on a board connector)?
The camera signals are not available on IGEP v2 board.
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.
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.
Is it possible to add analog video output?
Yes it is possible. There is no connector for S-video, but signals are available on board test points.
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
Which revision is my board?
At this moment, probably it is a IGEPv2-RB. Only few premium costumers have early IGEPv2-RA prototypes boards.
If it is IGEPv2-RB revision, it could see silkscreen text "IGEP0020-RB1" near J800 (USB Host connector)
Is it possible to power using USB OTG connector?
No, it is not possible.
What is the maximun power consumption?
The power consumption of IGEPv2@600Mhz is between 690 and 720mA
The power consumption of IGEPv2@720Mhz is between 750 and 780mA.
IGEP v2 720MHz has aprox. 15% more power consumption on core and mpu_iva than 600MHZ.
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 ).
What is the max Ethernet throughput with LAN9221i?
The ethernet throughput it's 94-96 M/bits second, LAN9221i it's connected direcly to OMAP processor addressable space and dedicated IRQ (no USB, SPI, converters ...).
[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
Are the sources for the xloader, uBoot and kernel supplied with the IGEPv2 board available?
All of them are available on git.igep.es if you are a registered user.
How do I stop U-Boot command line at "Hit any key to stop autoboot" prompt ?
U-Boot command line is a serial tty console. IGEPv2 normally uses UART3. So, you need send any key to 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 link to IGEPv2 ( serial cable + minicom or other serial terminal application )
