Panasonic MN88472

From LinuxTVWiki
Revision as of 02:36, 31 October 2013 by Merbanan (talk | contribs) (better probe description)
Jump to navigation Jump to search

NM88472

The NM88472 is a DVB-T/DVB-T2/DVB-C demodulator chip manufactured by Panasonic.

I2C Adressing

The chips has 3 I2C addresses, one for each demodulator bank: 

8 bit (7 bit)
0x38  (0x1c) - DVB-T2
0x30  (0x18) - DVB-T
0x34  (0x1a) - DVB-C


Demod Initialization

  • Load init reg values for all 3 banks (T2/T and last C)
  • Prepare DVB-T bank for firmware upload
  • Load firmware for demod
  • Check parity

Demod probe

  • Read register 0xFF in T2 bank

The answer should be 0x02.

TS mode

How to set chip ts mode.

Parallel TS with fixed clock

  • Write 0x00 to register 0x08 in T2 bank
  • Write 0xE1 to register 0xD9 in T bank

Parallel TS with variable clock

  • Write 0x00 to register 0x08 in T2 bank
  • Write 0xE3 to register 0xD9 in T bank

Serial TS with variable clock

  • Write 0x1D to register 0x08 in T2 bank
  • Write 0xE3 to register 0xD9 in T bank
Retrieved from "https://www.linuxtv.org/wiki/index.php?title=Panasonic_MN88472&oldid=32501"