THS1009

SLAS287A – AUGUST 2000 – REVISED DECEMBER 2002

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17

Writing to Control Register 0 and Control Register 1

The 10-bit wide control register 0 and control register 1 can be programmed by addressing the desired control

register and writing the register value to the ADC. The addressing is performed with the upper bits RA0 and RA1.

During this write process, the data bits D0 to D9 contain the desired control register value. Table 7 shows the

addressing of each control register.

Table 7. Control Register Addressing

D0 – D9

RA0

RA1

Addressed Control Register

Desired register value

0

0

Control register 0

Desired register value

1

0

Control register 1

Desired register value

0

1

Reserved for future

Desired register value

1

1

Reserved for future

INITIALIZATION OF THE THS1009

The initialization of the THS1009 should be done according to the configuration flow shown in Figure 27.

Start

Use Default

Values?

Yes

Write 0x401 to

THS1009

(Set Reset Bit in CR1)

No

Write 0x401 to

THS1009

(Set Reset Bit in CR1)

Clear RESET By

Writing 0x400 to

CR1

Write the User

Configuration to

CR0

Write The User

Configuration to

CR1 ( Must

Exclude RESET)

Continue

Clear RESET By

Writing 0x400 to

CR1

Figure 27. THS1009 Configuration Flow