STV0974 datasheet(40/69 Pages) STMICROELECTRONICS

40 / 69 page

40/61

STV0974

Functional description

There are restrictions related to the states at which registers can be accessed.

Table 25 lists the

state coding used in the register description.

Table 26.

Registers listed as reserved or read-only should NOT be written to, as this may cause

unpredictable results.

The data format for each register uses the following coding:

● D = Data (1 or 0 as required)

● 0 = Data bit must be set to 0

● 1 = Data bit must be set to 1

● X = Don’t care (either 0 or 1 can be written with no system consequences)

● R = Reserved

Table 25: Register state coding

State code

Description

Registers can be accessed safely while the system is in idle state

Registers can be accessed safely while the system is in ViewFinder state

Registers can be accessed safely while the system is in capture mode state

Registers can be accessed safely while the system is in live mode state

Registers can be accessed safely while the system is in sleep mode state

Registers can be accessed in all stable states

Table 26: Type of data

State Code

Description

Integer parameter. May be anywhere between 1 bit and 8 bit wide

Multiple field registers

Bit field register

Coded register

STV0974 数据表(PDF) 40 Page - STMicroelectronics