Re: DVB-T2 tuner dismantled: PCTV Nanostick T2 290e
Hi Steve Kerrison ! There are no developers available, sorry. Mauro can not keep up with the mails. Just look at the last merge window. -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: DVB-T2 tuner dismantled: PCTV Nanostick T2 290e
Hi Steve Kerrison ! There are no developers available, sorry. Mauro can not keep up with the mails. Just look at the last merge window. Hi Anca, That's a shame, but I will not be disheartened. I will see what I can piece together in my spare time and do my best to make it easy to merge in - it looks like the demod is the only new piece of hardware to deal with so it might not be too bad (such is the optimist in me). If anyone discovers this thread and wants to work with me to the same goal then do please get in touch with me via stevekerrison.com. Regards, Steve. -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: DVB-T2 tuner dismantled: PCTV Nanostick T2 290e
On Wed, Nov 24, 2010 at 6:44 PM, st...@stevekerrison.com wrote: - it looks like the demod is the only new piece of hardware to deal with and actually it makes DVB-T2 performance of that device very questionable (at least in my opinion), because NXP silicon tuner TDA18271 is old model and not DVB-T2 ready: http://www.nxp.com/#/pip/pip=[pip=TDA18271HD]|pp=[t=pip,i=TDA18271HD] like the new DVB-T2 ready NXP silicon tuner TDA18272: http://www.nxp.com/#/pip/pip=[pip=TDA18272HN_SDS]|pp=[t=pip,i=TDA18272HN_SDS] and so it's quite reasonable to assume that old silicon tuner designed for DVB-T such as TDA18271 is not capable to provide optimal performance for DVB-T2, which has high requirements for sure. --konstantin -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: DVB-T2 tuner dismantled: PCTV Nanostick T2 290e
Hi Konstantin, That's an interesting observation, and a valid one given, for example, the addition of QAM-256. I don't know enough about T or T2 to know how the difference impact the tuner requirements. Nevertheless, I can receive the T2 mux that is broadcast in my area. It has to be through my roof antenna, and even when digital switchover is complete here, I doubt that portable antennas will work particularly well here then. If PCTV had the option of using the better tuner, maybe they decided not to because the cost of the Sony demod pushed up the BoM too far already. Impossible to say for sure. I guess we'll have to wait and see if somebody brings out a solution with TDA18272/Sony demod combo before we can compare reception quality. Regards, -- Steve Kerrison MEng Hons. http://www.stevekerrison.com/ -Original Message- From: Konstantin Dimitrov kosio.dimit...@gmail.com To: st...@stevekerrison.com Cc: Anca Emanuel anca.eman...@gmail.com, linux-media@vger.kernel.org Subject: Re: DVB-T2 tuner dismantled: PCTV Nanostick T2 290e Date: Wed, 24 Nov 2010 21:11:07 +0200 On Wed, Nov 24, 2010 at 6:44 PM, st...@stevekerrison.com wrote: - it looks like the demod is the only new piece of hardware to deal with and actually it makes DVB-T2 performance of that device very questionable (at least in my opinion), because NXP silicon tuner TDA18271 is old model and not DVB-T2 ready: http://www.nxp.com/#/pip/pip=[pip=TDA18271HD]|pp=[t=pip,i=TDA18271HD] like the new DVB-T2 ready NXP silicon tuner TDA18272: http://www.nxp.com/#/pip/pip=[pip=TDA18272HN_SDS]|pp=[t=pip,i=TDA18272HN_SDS] and so it's quite reasonable to assume that old silicon tuner designed for DVB-T such as TDA18271 is not capable to provide optimal performance for DVB-T2, which has high requirements for sure. --konstantin -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
DVB-T2 tuner dismantled: PCTV Nanostick T2 290e
Hello everyone, One of these arrived at my door today, the world's first USB DVB-T2 tuner. So PCs can finally receive Freeview HD here in the UK... but only on Windows. My experience with Linux kernel development is more or less zilch - more of a spectator sport for me, although I've been subscribed to linux-media for a couple of months now. I will help how I can, but I expect that by myself, this would take an awful long time and never make it into the kernel. So everyone's help is appreciated. Pics to follow once my camera battery is recharged, but here is preliminary info: dmesg - [27892.030018] usb 2-2: new high speed USB device using ehci_hcd and address 54 lsusb - Bus 002 Device 054: ID 2013:024f Unknown (Pinnacle?) Device Descriptor: bLength18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize064 idVendor 0x2013 Unknown (Pinnacle?) idProduct 0x024f bcdDevice1.00 iManufacturer 1 PCTV Systems iProduct2 PCTV 290e iSerial 3 0006LL9R bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 55 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes1 Transfer TypeIsochronous Synch Type None Usage Type Data wMaxPacketSize 0x 1x 0 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x85 EP 5 IN bmAttributes1 Transfer TypeIsochronous Synch Type None Usage Type Data wMaxPacketSize 0x 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber0 bAlternateSetting 1 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes1 Transfer TypeIsochronous Synch Type None Usage Type Data wMaxPacketSize 0x03ac 1x 940 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x85 EP 5 IN bmAttributes1 Transfer TypeIsochronous Synch Type None Usage Type Data wMaxPacketSize 0x03ac 1x 940 bytes bInterval 1 Device Qualifier (for other device speed): bLength10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize064 bNumConfigurations 1 Device Status: 0x (Bus Powered) PCB --- It's a very small (smaller than most USB-stick tuners) device, implemented on two PCBs sandwiched together. Tuner: NXP TDA18271HDA2 USB IC: Empia em28174 (is this part of the 2874 family, the 2871, or something else? http://www.linuxtv.org/wiki/index.php/Em28xx_devices#em2874 ) Demod: Sony CXD2820R The demod is no surprise given it's about the only T2 compatible demod out there (LSI might have one too, if memory serves). So, what's next? Any PCTV Linux driver contributors active here? I will next attempt to find a datasheet for the Sony demod, then grab some usbsnoop data, although the only Windows machine I have that can get near a fixed antenna is Atom powered... so it ain't great. Questions, requests, demands and insults are all welcomed. Regards, -- Steve Kerrison MEng Hons. http://www.stevekerrison.com/ -- To unsubscribe from this list: send the line unsubscribe linux-media in the body
Re: DVB-T2 tuner dismantled: PCTV Nanostick T2 290e
Quick correction: The tuner is TDA18271HDC2 not TDA18271HDA2; it's dark and I'm tired. Photos are now available at http://www.stevekerrison.com/290e/pics.html The most interesting are the two PCB shots. Tuner: http://www.stevekerrison.com/290e/img/tuner.jpg Controller/Demod: http://www.stevekerrison.com/290e/img/hastalavista.jpg I'll put this information into the wiki when I have a chance, and when I can take some better photos in daylight. Regards, -- Steve Kerrison MEng Hons. http://www.stevekerrison.com/ -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
