TSC2004IRTJT datasheet(29/62 Pages) TI2

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TSC2004

SBAS408E – JUNE 2007 – REVISED MARCH 2008

Table 9. Control Byte 0 Bit Register Description (D7 = 0)

BIT

NAME

DESCRIPTION

1: Control Byte 1—start conversion, channel select, and converison-related configuration

Control Byte ID

0: Control Byte 0—read/write data registers and non-conversion-related controls

D6-D3

A3-A0

RESERVED

A '0' must be set in this bit for normal operation

Power Not Down Control

1: A/D converter biasing circuitry is always on between conversions but is shut down

PND0

after the converter function stops

0: A/D converter biasing circuitry is shut down either between conversions or after the

converter function stops

TSC Internal Register Data Flow Control

1: Set the starting address of the TSC internal registers for a register read (see

R/W

Figure 35)

0: Write to TSC internal registers

Table 10. Internal Register Map

READ/WRITE

X measurement result

Y measurement result

Z1 measurement result

Z2 measurement result

AUX measurement result

Temp1 measurement result

Temp2 measurement result

Status

AUX high threshold

R/W

AUX low threshold

R/W

Temp high threshold (apply to both TEMP1 and TEMP2)

R/W

Temp low threshold (apply to both TEMP1 and TEMP2)

R/W

CFR0

R/W

CFR1

R/W

CFR2

R/W

Converter function select status

R/W—Register read and write control. A '1' indicates that the value of the internal register address bits A3-A0 is

stored internally as the starting address for a register read (see Figure 35). The content of the addressed register

is sent to SDA by using I2C read addressing (see Figure 36 and Figure 37). A '0' indicates that the data following

Control Byte 0 on SDA are written into the internal register addressed by bits A3-A0 (see Figure 35).

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