STB5701 datasheet(26/35 Pages) STMICROELECTRONICS

26 / 35 page

Functional description

STB5701

26/35

4.6

Registers list

Two unique I2C addresses have been reserved for the STB5701 device, the appropriate one

is selected using the SAD input pin.

4.7

The I2C mapped address space of the STB5701 is given below:

Table 7.

I2C reserved addresses

SAD

Address

0110010x

Unique to this device.

1 (spare)

0110011x

Table 8.

I2C address breakdown

Base address

Group

Description

0x00

Top Level

See table 9 below

0x80

SCD Block

See table 10 below

Table 9.

I2C mapped top level registers - summary

Address

Name

Reset value

Function

0x00

DIG_config

0x00000000 Digital configuration

0x04

RF_config

0x00000000 Configure RF front end

0x08

PLL_A

0x00000000 PLL post divider

0x0C

PLL_M

0x00000000 PLL feedback divider

0x10

PLL_R

0x00000000 PLL reference divider

Table 10.

I2C mapped SCD registers - summary

Address

Name

Reset value

Function

0x80

Scd_config

0x00000000 SCD configuration register.

0x84

Scd_status

0x00000000 SCD status can be read from this register.

0x88

Scd_code

0x00000000 Expected Start code is stored in this register.

0x8C

Scd_code_length

0x00000000

Length of the start code is stored in this

0x90

Scd_symbol_min_time

0x00000000

Minimum time of the symbol is stored in this

0x94

Scd_symbol_max_time 0x00000000

Maximum time of the symbol is stored in this

0x98

Scd_symbol_nom_time 0x00000000 Nominal symbol time is stored in this register.

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