Panasonic MN88472

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 (T2)
0x30  (0x18) - DVB-T  (T1)
0x34  (0x1a) - DVB-C  (C1)

Demod Initialization

• Write init reg values for all 3 register banks (T2 T1 and C1) {bank,reg,value}

{T2,0x00,0x66},{T2,0x01,0x00},{T2,0x02,0x01},{T2,0x03,0x03},
{T2,0x04,0x00},{T2,0x05,0x00},{T2,0x06,0x00},{T2,0x07,0x00},
{T2,0x08,0x00},{T2,0x09,0x00},{T2,0x0a,0x00},{T2,0x0b,0x00},
{T2,0x0c,0x00},{T2,0x0d,0x00},{T2,0x0e,0x00},{T2,0x0f,0x00},
{T2,0x10,0x3e},{T2,0x11,0x70},{T2,0x12,0x64},{T2,0x13,0x8f},
{T2,0x14,0x80},{T2,0x15,0x00},{T2,0x16,0x08},{T2,0x17,0xee},
{T2,0x18,0x08},{T2,0x19,0xee},{T2,0x1a,0x43},{T2,0x1b,0x00},
{T2,0x1c,0x74},{T2,0x1d,0xe4},{T2,0x1e,0x26},{T2,0x1f,0x4f},
{T2,0x20,0x72},{T2,0x21,0x22},{T2,0x22,0x22},{T2,0x23,0x01},
{T2,0x24,0x00},{T2,0x25,0x12},{T2,0x26,0x00},{T2,0x27,0x00},
{T2,0x28,0x80},{T2,0x29,0x0c},{T2,0x2a,0xf4},{T2,0x2b,0x03},
{T2,0x2c,0x00},{T2,0x2d,0x20},{T2,0x2e,0x88},{T2,0x2f,0x00},
{T2,0x30,0x80},{T2,0x31,0x80},{T2,0x32,0x00},{T2,0x33,0x00},
{T2,0x34,0x00},{T2,0x35,0x00},{T2,0x36,0x00},{T2,0x37,0x00},
{T2,0x38,0xca},{T2,0x39,0x03},{T2,0x3a,0x02},{T2,0x3b,0x55},
{T2,0x3c,0xd7},{T2,0x3d,0x00},{T2,0x3e,0x00},{T2,0x3f,0x22},
{T2,0x40,0x00},{T2,0x41,0x38},{T2,0x42,0x22},{T2,0x43,0x00},
{T2,0x44,0x38},{T2,0x45,0xd3},{T2,0x46,0x10},{T2,0x47,0xb5},
{T2,0x48,0xa1},{T2,0x49,0x00},{T2,0x4a,0xd3},{T2,0x4b,0x07},
{T2,0x4c,0x64},{T2,0x4d,0x0d},{T2,0x4e,0x00},{T2,0x4f,0x05},
{T2,0x50,0x00},{T2,0x51,0x55},{T2,0x52,0x20},{T2,0x53,0x00},
{T2,0x54,0x24},{T2,0x55,0x64},{T2,0x56,0x44},{T2,0x57,0x33},
{T2,0x58,0x1f},{T2,0x59,0x00},{T2,0x5a,0x5a},{T2,0x5b,0x03},
{T2,0x5c,0xc0},{T2,0x5d,0x00},{T2,0x5e,0x00},{T2,0x5f,0x03},
{T2,0x60,0x00},{T2,0x61,0x00},{T2,0x62,0x11},{T2,0x63,0x40},
{T2,0x64,0x84},{T2,0x65,0x04},{T2,0x66,0x0c},{T2,0x67,0x00},
{T2,0x68,0x08},{T2,0x69,0x00},{T2,0x6a,0x00},{T2,0x6b,0x12},
{T2,0x6c,0x21},{T2,0x6d,0x10},{T2,0x6e,0x01},{T2,0x6f,0x00},
{T2,0x70,0x00},{T2,0x71,0x00},{T2,0x72,0xe8},{T2,0x73,0x48},
{T2,0x74,0x40},{T2,0x75,0x00},{T2,0x76,0x1d},{T2,0x77,0x19},
{T2,0x78,0x1d},{T2,0x79,0x19},{T2,0x7a,0x66},{T2,0x7b,0x8c},
{T2,0x7c,0x9f},{T2,0x7d,0x08},{T2,0x7e,0x00},{T2,0x7f,0x00},
{T2,0x80,0x00},{T2,0x81,0x00},{T2,0x83,0x00},{T2,0x84,0x00},
{T2,0x85,0x00},{T2,0x86,0x00},{T2,0x87,0x00},{T2,0x88,0x00},
{T2,0x89,0x00},{T2,0x8a,0x20},{T2,0x8b,0x49},{T2,0x8c,0x00},
{T2,0xc4,0x00},{T2,0xc5,0x00},{T2,0xc6,0x00},{T2,0xc7,0x87},
{T2,0xc8,0x40},{T2,0xc9,0x30},{T2,0xca,0x06},{T2,0xcb,0x02},
{T2,0xcc,0x00},{T2,0xcd,0x3b},{T2,0xce,0x00},{T2,0xcf,0x00},
{T2,0xd0,0x00},{T2,0xd1,0x00},{T2,0xd2,0x00},{T2,0xd3,0x40},
{T2,0xd4,0x00},{T2,0xd5,0xf0},{T2,0xd6,0x02},{T2,0xd7,0x02},
{T2,0xd8,0x01},{T2,0xd9,0x00},{T2,0xda,0x00},{T2,0xdb,0x00},
{T2,0xdc,0x00},{T2,0xdd,0x00},{T2,0xde,0x00},{T2,0xdf,0x00},
{T2,0xe0,0x00},{T2,0xe1,0x00},{T2,0xe2,0x00},{T2,0xe3,0x00},
{T2,0xe4,0x00},{T2,0xe5,0x00},{T2,0xe6,0x00},{T2,0xe7,0x00},
{T2,0xe9,0x00},{T2,0xea,0x00},{T2,0xeb,0x00},{T2,0xec,0xd3},
{T2,0xed,0x31},{T2,0xee,0x00},{T2,0xef,0x00},{T2,0xf0,0x00},
{T2,0xf1,0x00},{T2,0xf2,0x00},{T2,0xf3,0x00},{T2,0xf4,0x00},
{T2,0xf5,0x00},{T2,0xf6,0x00},{T2,0xf8,0x9f},{T2,0xf9,0xd4},
{T2,0xfa,0x00},{T2,0xfb,0x03},{T2,0xfc,0x00},{T2,0xfd,0x00},
{T2,0xfe,0x00},{T2,0xff,0x02},{T1,0x00,0xba},{T1,0x01,0x13},
{T1,0x02,0x80},{T1,0x03,0xba},{T1,0x04,0x91},{T1,0x05,0x40},
{T1,0x06,0xe7},{T1,0x07,0x26},{T1,0x08,0xff},{T1,0x09,0x1b},
{T1,0x0a,0x09},{T1,0x0b,0x08},{T1,0x0c,0x04},{T1,0x0d,0x2d},
{T1,0x0e,0x09},{T1,0x0f,0x00},{T1,0x10,0x10},{T1,0x11,0x1f},
{T1,0x12,0x08},{T1,0x13,0x00},{T1,0x14,0x00},{T1,0x15,0x03},
{T1,0x16,0x00},{T1,0x17,0x00},{T1,0x18,0x00},{T1,0x19,0xb0},
{T1,0x1a,0x00},{T1,0x1b,0x00},{T1,0x1c,0x00},{T1,0x1d,0xe0},
{T1,0x1e,0x6c},{T1,0x1f,0x33},{T1,0x20,0x4a},{T1,0x21,0x03},
{T1,0x22,0x00},{T1,0x23,0x01},{T1,0x24,0x05},{T1,0x25,0x96},
{T1,0x26,0x43},{T1,0x27,0x00},{T1,0x28,0x01},{T1,0x29,0x15},
{T1,0x2a,0xa2},{T1,0x2b,0xc3},{T1,0x2c,0xf5},{T1,0x2d,0x22},
{T1,0x2e,0x87},{T1,0x2f,0xd3},{T1,0x30,0x00},{T1,0x31,0x55},
{T1,0x32,0x33},{T1,0x33,0x61},{T1,0x34,0x22},{T1,0x35,0x01},
{T1,0x36,0x02},{T1,0x37,0x40},{T1,0x38,0x40},{T1,0x39,0x46},
{T1,0x3a,0x25},{T1,0x3b,0x04},{T1,0x3c,0x00},{T1,0x3d,0x04},
{T1,0x3e,0x00},{T1,0x3f,0x00},{T1,0x40,0x3b},{T1,0x41,0x20},
{T1,0x42,0x00},{T1,0x43,0x3f},{T1,0x44,0x1f},{T1,0x45,0x05},
{T1,0x46,0x00},{T1,0x47,0x00},{T1,0x48,0x05},{T1,0x49,0xf0},
{T1,0x4a,0x00},{T1,0x4b,0x00},{T1,0x4c,0x1f},{T1,0x4d,0x0f},
{T1,0x4e,0x39},{T1,0x4f,0x03},{T1,0x50,0xf8},{T1,0x51,0xf4},
{T1,0x52,0x08},{T1,0x53,0xf8},{T1,0x54,0xea},{T1,0x55,0xf0},
{T1,0x56,0x04},{T1,0x57,0x20},{T1,0x58,0x12},{T1,0x59,0x12},
{T1,0x5a,0x02},{T1,0x5b,0x20},{T1,0x5c,0x1a},{T1,0x5d,0x08},
{T1,0x5e,0xad},{T1,0x5f,0x33},{T1,0x60,0x95},{T1,0x61,0x8f},
{T1,0x62,0x80},{T1,0x63,0x00},{T1,0x64,0x76},{T1,0x65,0x54},
{T1,0x66,0x87},{T1,0x67,0x65},{T1,0x68,0x66},{T1,0x69,0x54},
{T1,0x6a,0x4a},{T1,0x6b,0x86},{T1,0x6c,0x13},{T1,0x6d,0x31},
{T1,0x6e,0x2d},{T1,0x6f,0x07},{T1,0x70,0x00},{T1,0x71,0x40},
{T1,0x72,0x00},{T1,0x73,0x00},{T1,0x74,0x00},{T1,0x75,0x10},
{T1,0x76,0x0c},{T1,0x77,0x0c},{T1,0x78,0x59},{T1,0x79,0x00},
{T1,0x7a,0x00},{T1,0x7b,0x00},{T1,0x7c,0x00},{T1,0x7d,0x05},
{T1,0x88,0x1e},{T1,0x89,0x49},{T1,0x8a,0x31},{T1,0x8b,0x1a},
{T1,0x8c,0x2c},{T1,0x8d,0x3f},{T1,0x8e,0x7f},{T1,0x8f,0x07},
{T1,0xa5,0x00},{T1,0xa6,0x00},{T1,0xa9,0x00},{T1,0xaa,0x00},
{T1,0xab,0x00},{T1,0xae,0x00},{T1,0xaf,0x00},{T1,0xb0,0x0a},
{T1,0xb1,0x7a},{T1,0xb2,0x40},{T1,0xb3,0x5c},{T1,0xb4,0xf6},
{T1,0xb5,0x31},{T1,0xb6,0xc0},{T1,0xb7,0xff},{T1,0xb8,0x88},
{T1,0xb9,0xff},{T1,0xba,0xaa},{T1,0xbb,0x00},{T1,0xbc,0x08},
{T1,0xbd,0x03},{T1,0xbe,0x00},{T1,0xbf,0x00},{T1,0xc0,0xbf},
{T1,0xc1,0x00},{T1,0xc2,0x00},{T1,0xc3,0xff},{T1,0xc4,0x20},
{T1,0xc5,0x80},{T1,0xc6,0xff},{T1,0xc7,0xff},{T1,0xc8,0xff},
{T1,0xc9,0xe0},{T1,0xca,0x80},{T1,0xcb,0x00},{T1,0xcc,0x00},
{T1,0xcd,0x01},{T1,0xce,0x00},{T1,0xcf,0x54},{T1,0xd0,0x23},
{T1,0xd1,0x47},{T1,0xd2,0x01},{T1,0xd3,0x00},{T1,0xd4,0x09},
{T1,0xd5,0x47},{T1,0xd6,0x46},{T1,0xd7,0x00},{T1,0xd8,0x00},
{T1,0xd9,0xe1},{T1,0xda,0x03},{T1,0xdb,0x08},{T1,0xdc,0xb8},
{T1,0xdd,0x08},{T1,0xde,0x0c},{T1,0xdf,0x90},{T1,0xe6,0x00},
{T1,0xe7,0x00},{T1,0xe8,0x00},{T1,0xec,0x00},{T1,0xed,0x00},
{T1,0xee,0x00},{T2,0xfb,0x03},{T1,0xf0,0x00},{T1,0xf1,0x00},
{T1,0xf2,0x00},{T1,0xf3,0x00},{T1,0xf4,0x00},{T1,0xf5,0x01},
{T1,0xf7,0x00},{T1,0xf8,0x00},{T1,0xf9,0x07},{T1,0xfa,0xff},
{T1,0xfb,0x00},{T1,0xfc,0x00},{T1,0xfd,0x30},{T1,0xfe,0x00},
{T1,0xff,0x02},{C1,0x00,0xb0},{C1,0x01,0x00},{C1,0x02,0x11},
{C1,0x03,0x18},{C1,0x04,0x04},{C1,0x05,0xe0},{C1,0x06,0x5f},
{C1,0x07,0x27},{C1,0x08,0x30},{C1,0x09,0xff},{C1,0x0a,0xc0},
{C1,0x0b,0xaa},{C1,0x0c,0xbb},{C1,0x0d,0xee},{C1,0x0e,0xaa},
{C1,0x0f,0xaa},{C1,0x10,0x0d},{C1,0x11,0xab},{C1,0x12,0x0b},
{C1,0x13,0x3c},{C1,0x14,0x18},{C1,0x15,0xd9},{C1,0x16,0x51},
{C1,0x17,0xec},{C1,0x18,0x00},{C1,0x19,0xbe},{C1,0x1a,0xd6},
{C1,0x1b,0x1c},{C1,0x1c,0x0b},{C1,0x1d,0x3c},{C1,0x1e,0x29},
{C1,0x1f,0x00},{C1,0x20,0x00},{C1,0x21,0x00},{C1,0x22,0xa0},
{C1,0x23,0x94},{C1,0x24,0xaf},{C1,0x25,0x01},{C1,0x26,0x00},
{C1,0x27,0x00},{C1,0x28,0x00},{C1,0x29,0x00},{C1,0x2a,0x00},
{C1,0x2b,0x00},{C1,0x2c,0x00},{C1,0x2d,0x00},{C1,0x2e,0x00},
{C1,0x2f,0x0c},{C1,0x30,0x3b},{C1,0x31,0x41},{C1,0x32,0x0c},
{C1,0x33,0x02},{C1,0x34,0xb1},{C1,0x35,0xed},{C1,0x36,0x60},
{C1,0x37,0xcc},{C1,0x38,0x6c},{C1,0x39,0x7d},{C1,0x3a,0xb1},
{C1,0x3b,0xed},{C1,0x3c,0x69},{C1,0x3d,0xb3},{C1,0x3e,0xed},
{C1,0x3f,0x40},{C1,0x40,0xdb},{C1,0x41,0xda},{C1,0x42,0x79},
{C1,0x43,0x87},{C1,0x44,0xbc},{C1,0x45,0x3f},{C1,0x46,0xb7},
{C1,0x47,0x5e},{C1,0x48,0x1c},{C1,0x49,0xb7},{C1,0x4a,0x56},
{C1,0x4b,0xb7},{C1,0x4c,0x56},{C1,0x4d,0xb7},{C1,0x4e,0x56},
{C1,0x4f,0x63},{C1,0x50,0xd5},{C1,0x51,0x74},{C1,0x52,0x95},
{C1,0x53,0x5f},{C1,0x54,0xc0},{C1,0x55,0x73},{C1,0x56,0x28},
{C1,0x57,0xc4},{C1,0x58,0x69},{C1,0x59,0x55},{C1,0x5a,0x55},
{C1,0x5b,0x40},{C1,0x5c,0x60},{C1,0x5d,0xfd},{C1,0x5e,0x00},
{C1,0x5f,0x00},{C1,0x60,0x30},{C1,0x61,0x29},{C1,0x62,0x13},
{C1,0x63,0xf0},{C1,0x64,0x00},{C1,0x65,0x96},{C1,0x66,0x72},
{C1,0x67,0x1b},{C1,0x68,0x2d},{C1,0x69,0x97},{C1,0x6a,0x4b},
{C1,0x6b,0xde},{C1,0x6c,0x88},{C1,0x6d,0x00},{C1,0x6e,0x00},
{C1,0x6f,0x00},{C1,0x70,0xab},{C1,0x71,0x2b},{C1,0x72,0x10},
{C1,0x73,0xf4},{C1,0x74,0x47},{C1,0x75,0x57},{C1,0x76,0x40},
{C1,0x77,0xaa},{C1,0x78,0xaa},{C1,0x79,0x01},{C1,0x7a,0x00},
{C1,0x7b,0x07},{C1,0x7c,0x50},{C1,0x80,0x00},{C1,0x81,0x88},
{C1,0x82,0x00},{C1,0xf0,0x00},{C1,0xf1,0x5e},{C1,0xf2,0xec},
{C1,0xf3,0x00},{C1,0xf4,0x5e},{C1,0xf5,0xec},{C1,0xf6,0x05},
{T2,0xfb,0x03},{C1,0xfc,0x00},{C1,0xfd,0x00},{C1,0xfe,0x00},
{C1,0xff,0x02},

• Prepare DVB-T bank for firmware upload
  • Write 0x20 to register 0xf0 in T1 bank
  • Write 0x03 to register 0xf5 in T1 bank (this most likely set the mcu to reset state)
• Load firmware for demod
  • Write all firmware bytes to register 0xf6 to fill the mcu memory
• Start demod firmware
  • Write 0x00 to register 0xf5 in T1 bank
• Check parity
  • Read register 0xf8 in T1 bank, if byte 5 (0x10) is set the parity check failed.

Demod mcu

You can check if the firmware is running by reading register 0xf5.

• If bit 0 is 0 it is running
• If bit 0 is 1 it is not running

You can control the cpu by writing to the 0xf5 register:

• write 0x03 to stop the cpu
• write 0x00 to start the cpu

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 T1 bank

Parallel TS with variable clock

• Write 0x00 to register 0x08 in T2 bank
• Write 0xE3 to register 0xD9 in T1 bank

Serial TS with variable clock

• Write 0x1D to register 0x08 in T2 bank
• Write 0xE3 to register 0xD9 in T1 bank

Lock

DVB-T2

• Read register 0x92 in T2 bank.
• If the low nibble in the result is >12 there is a lock

DVB-T

• Read register 0x7F in T1 bank.
• If the low nibble in the result is >8 there is a lock

DVB-C

• Read register 0x84 in C1 bank.
• If the low nibble in the result is >7 there is a lock

When lock is detected it means what the demod has: Signal, Carrier, Viterbi, Sync and Lock.

Setting Digital TV standard

Select the value representing the standard you want from the list.

DVB-T   2
DVB-T2  3
DVB-C   4

• Write the value to register 0x03 in T2 bank

Setting demod bandwidth

Select the value representing the bandwidth you want from the list.

5MHz 3
6MHz 2
7MHz 1
8MHz 0

• Write the value to register 0x04 in T2 bank

Configure demod for signal reception

• Write 0x00 to register 0xFF in T2 bank
• Write 0x66 to register 0x00 in T2 bank
• Write 0x00 to register 0x01 in T2 bank
• Write 0x02 to register 0x02 in T2 bank
• Set the Digital TV Standard
• Set the demod bandwidth

And depending on the selected standard / bandwidth configuration write one of the following configuration to the demod:

DVB-C

{T2,0x10,0x3f},
{T2,0x11,0x50},
{T2,0x12,0x2c},
{T2,0x13,0x8f},
{T2,0x14,0x80},
{T2,0x15,0x00},
{T2,0x16,0x08},
{T2,0x17,0xee},
{T2,0x18,0x08},
{T2,0x19,0xee},
{T1,0x46,0x00},
{T1,0xae,0x00},
{T1,0xb0,0x0b},
{T1,0xb4,0x00},
{T1,0xcd,0x17},
{T1,0xd4,0x09},
{T1,0xd6,0x48},

DVB-T

Begin with a per MHz setup.

6MHz

{T2,0x10,0x2c},
{T2,0x11,0x94},
{T2,0x12,0xdb},
{T2,0x13,0xbf},
{T2,0x14,0x55},
{T2,0x15,0x55},
{T2,0x16,0x15},
{T2,0x17,0x6b},
{T2,0x18,0x15},
{T2,0x19,0x6b},
{T1,0x46,0x00},

7MHz

{T2,0x10,0x39},
{T2,0x11,0x11},
{T2,0x12,0xbc},
{T2,0x13,0xa4},
{T2,0x14,0x00},
{T2,0x15,0x00},
{T2,0x16,0x0f},
{T2,0x17,0x2c},
{T2,0x18,0x0f},
{T2,0x19,0x2c},
{T1,0x46,0x10},

8MHz

{T2,0x10,0x39},
{T2,0x11,0x11},
{T2,0x12,0xbc},
{T2,0x13,0x8f},
{T2,0x14,0x80},
{T2,0x15,0x00},
{T2,0x16,0x08},
{T2,0x17,0xee},
{T2,0x18,0x08},
{T2,0x19,0xee},
{T1,0x46,0x00},

And end with a common configuration.

{T1,0xae,0x00},
{T1,0xb0,0x0a},
{T1,0xb4,0x00},
{T1,0xcd,0x1f},
{T1,0xd4,0x0a},
{T1,0xd6,0x48},

DVB-T2

Begin with a per MHz setup.

1.7MHz

{T2,0x10,0x17},
{T2,0x11,0xba},
{T2,0x12,0x11},
{T2,0x13,0xf4},
{T2,0x14,0x6f},
{T2,0x15,0x64},
{T2,0x16,0x1c},
{T2,0x17,0x00},
{T2,0x18,0x1c},
{T2,0x19,0x00},

5MHz

{T2,0x10,0x3e},
{T2,0x11,0x70},
{T2,0x12,0x64},
{T2,0x13,0xe5},
{T2,0x14,0x99},
{T2,0x15,0x9a},
{T2,0x16,0x1b},
{T2,0x17,0xa9},
{T2,0x18,0x1b},
{T2,0x19,0xa9},

6MHz

{T2,0x10,0x2c},
{T2,0x11,0x94},
{T2,0x12,0xdb},
{T2,0x13,0xbf},
{T2,0x14,0x55},
{T2,0x15,0x55},
{T2,0x16,0x15},
{T2,0x17,0x6b},
{T2,0x18,0x15},
{T2,0x19,0x6b},

7MHz

{T2,0x10,0x39},
{T2,0x11,0x11},
{T2,0x12,0xbc},
{T2,0x13,0xa4},
{T2,0x14,0x00},
{T2,0x15,0x00},
{T2,0x16,0x0f},
{T2,0x17,0x2c},
{T2,0x18,0x0f},
{T2,0x19,0x2c},

8MHz

{T2,0x10,0x39},
{T2,0x11,0x11},
{T2,0x12,0xbc},
{T2,0x13,0x8f},
{T2,0x14,0x80},
{T2,0x15,0x00},
{T2,0x16,0x08},
{T2,0x17,0xee},
{T2,0x18,0x08},
{T2,0x19,0xee},

And end with a common configuration.

{T1,0x46,0x00},
{T1,0xae,0x00},
{T1,0xb0,0x0a},
{T1,0xb4,0xf6},
{T1,0xcd,0x01},
{T1,0xd4,0x09},
{T1,0xd6,0x46},

{T2,0x30,0x80},
{T2,0x32,0x00},
{T2,0xf8,0x9f},