Difference between revisions of "LinuxLibre:ISDB USB ZINWELL"
From LibrePlanet
(reference id is 57, not 60) |
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| Line 15: | Line 15: | ||
* SPI and I2C interfaces for controling an external tuner and modulator | * SPI and I2C interfaces for controling an external tuner and modulator | ||
* USB interface (used to communicate with the PC) | * USB interface (used to communicate with the PC) | ||
| + | * we still don't have datasheets for this IC. | ||
| − | ==Maxim | + | ==Maxim MAX2163A== |
* Tuner | * Tuner | ||
| − | * Controlled through configuration/status registers accessible at I2C address 0xc0 (write) and 0xc1 (read) | + | * Controlled through configuration/status registers accessible at I2C address 0xc0 (write) and 0xc1 (read) through pins 24 (SCL) and 25 (SDA) of the chip. |
| − | * Datasheet available [http://datasheets.maxim-ic.com/en/ds/MAX2163.pdf here] | + | * Datasheet available [http://datasheets.maxim-ic.com/en/ds/MAX2163.pdf here] (but this datasheet is for the 28 pin version. The receiver uses a 40-pin variant.) |
==MA50159== | ==MA50159== | ||
| − | demodulator | + | * demodulator |
| + | * labeled "MegaChips" | ||
| + | * 64-pin package | ||
| + | * we still don't have the datasheet for this IC. | ||
| + | * Resistors 23 and 24 seem to be pull-up resistors for an i2c bus. These resistors are directly connected to pins 1 and 63, which seem to be SCL and SDA, respectively. We have connected an i2c sniffer to these resistors and identified a device with addresses c0 and c1 in this i2c bus. Maybe this is a bus shared with the tuner. | ||
| − | =Who is working on a free | + | =Who is working on a free driver implementation?= |
* Felipe Sanches | * Felipe Sanches | ||
* Lucas Villa Real | * Lucas Villa Real | ||
We have some experimental code available [http://lucasvr.gobolinux.org/projects/trunk/zinwell/ on subversion]. | We have some experimental code available [http://lucasvr.gobolinux.org/projects/trunk/zinwell/ on subversion]. | ||
| + | |||
| + | =Who is working on a free firmware implementation?= | ||
| + | * currently we load a block of 56 bytes to the device. We do not know whether this is actual firmware-code or simply initialization values. | ||
| + | |||
| + | <pre> | ||
| + | unsigned char firmware[56] = { | ||
| + | 0x01, 0x01, 0x04, 0x08, 0x05, 0x01, 0x06, 0x00, | ||
| + | 0x15, 0xf8, 0x19, 0xcc, 0x4d, 0x08, 0x70, 0x02, | ||
| + | 0x08, 0x28, 0x09, 0x10, 0x40, 0x0d, 0x43, 0xf8, | ||
| + | 0x47, 0xc0, 0x48, 0x7f, 0xa1, 0x40, 0xa5, 0x4c, | ||
| + | 0xb9, 0xd9, 0xac, 0x01, 0xad, 0x80, 0xae, 0x43, | ||
| + | 0xaf, 0x01, 0xb0, 0x22, 0xbd, 0xe9, 0xc0, 0x1c, | ||
| + | 0xc4, 0x20, 0xc5, 0x04, 0xca, 0x33, 0x01, 0x02 | ||
| + | }; | ||
| + | </pre> | ||
Revision as of 19:03, 2 August 2010
It is a Digital TV receiver (USB dongle) manufactured by Zinwell Inc. and sold in Brazil by IBAYO. It is compliant with the ISDB-T 1Seg DTV standard (japanese standard adopted in Brazil).
device ID: 5a57:4210 Zinwell
It is very similar to this reference design from Somagic: http://www.somagic.cn/english/product_info.asp?id=57
Contents
photos of the device board
- http://www.lucasvr.gobolinux.org/etc/zinwell-up.jpg
- http://www.lucasvr.gobolinux.org/etc/zinwell-down.jpg
ICs used in the device board
Somagic SMI-2020CBE
http://www.somagic-hz.com/product_info.asp?id=57
- Unknown microcontroller
- SPI and I2C interfaces for controling an external tuner and modulator
- USB interface (used to communicate with the PC)
- we still don't have datasheets for this IC.
Maxim MAX2163A
- Tuner
- Controlled through configuration/status registers accessible at I2C address 0xc0 (write) and 0xc1 (read) through pins 24 (SCL) and 25 (SDA) of the chip.
- Datasheet available here (but this datasheet is for the 28 pin version. The receiver uses a 40-pin variant.)
MA50159
- demodulator
- labeled "MegaChips"
- 64-pin package
- we still don't have the datasheet for this IC.
- Resistors 23 and 24 seem to be pull-up resistors for an i2c bus. These resistors are directly connected to pins 1 and 63, which seem to be SCL and SDA, respectively. We have connected an i2c sniffer to these resistors and identified a device with addresses c0 and c1 in this i2c bus. Maybe this is a bus shared with the tuner.
Who is working on a free driver implementation?
- Felipe Sanches
- Lucas Villa Real
We have some experimental code available on subversion.
Who is working on a free firmware implementation?
- currently we load a block of 56 bytes to the device. We do not know whether this is actual firmware-code or simply initialization values.
unsigned char firmware[56] = {
0x01, 0x01, 0x04, 0x08, 0x05, 0x01, 0x06, 0x00,
0x15, 0xf8, 0x19, 0xcc, 0x4d, 0x08, 0x70, 0x02,
0x08, 0x28, 0x09, 0x10, 0x40, 0x0d, 0x43, 0xf8,
0x47, 0xc0, 0x48, 0x7f, 0xa1, 0x40, 0xa5, 0x4c,
0xb9, 0xd9, 0xac, 0x01, 0xad, 0x80, 0xae, 0x43,
0xaf, 0x01, 0xb0, 0x22, 0xbd, 0xe9, 0xc0, 0x1c,
0xc4, 0x20, 0xc5, 0x04, 0xca, 0x33, 0x01, 0x02
};
