THS1007

SLAS286A – AUGUST 2000– REVISED DECEMBER 2002

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ADC CONTROL REGISTER

The THS1007 contains two 10-bit wide control registers (CR0, CR1) in order to program the device into the

desired mode. The bit definitions of both control registers are shown in 6.

Table 6. Bit Definitions of Control Register CR0 and CR1

REG

BIT 9

BIT 8

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

CR0

TEST1

TEST0

SCAN

DIFF1

DIFF0

CHSEL1

CHSEL0

PD

RES

VREF

CR1

RESERVED

OFFSET

BIN/2’s

R/W

RES

RES

RES

RES

SRST

RESET

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