Datasheet

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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

D7 Control Byte ID

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

D6-D3 A3-A0 Register Address Bits as detailed in Table 10

D2 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

D1 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

D0 R/ W

Figure 35 )

0: Write to TSC internal registers

Table 10. Internal Register Map

A3 A2 A1 A0 REGISTER CONTENT READ/WRITE

0 0 0 0 X measurement result R

0 0 0 1 Y measurement result R

0 0 1 0 Z

measurement result R

0 0 1 1 Z

measurement result R

0 1 0 0 AUX measurement result R

0 1 0 1 Temp1 measurement result R

0 1 1 0 Temp2 measurement result R

0 1 1 1 Status R

1 0 0 0 AUX high threshold R/W

1 0 0 1 AUX low threshold R/W

1 0 1 0 Temp high threshold (apply to both TEMP1 and TEMP2) R/W

1 0 1 1 Temp low threshold (apply to both TEMP1 and TEMP2) R/W

1 1 0 0 CFR0 R/W

1 1 0 1 CFR1 R/W

1 1 1 0 CFR2 R/W

1 1 1 1 Converter function select status R

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 I

C 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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