Low-Cost Precision Sensor

Signal Conditioner

20

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Table 10. CRIL Command Codes

CRIL[3:0]

NAME

DESCRIPTION

0000

LdICR

Load internal calibration register at address given in ICRA with data from DHR[15:0].

0001

EEPW

EEPROM write of 8 data bits from DHR[7:0] to address location pointed by IEEA [9:0].

0010

ERASE

Erase all of EEPROM (all bytes equal FFhex).

0011

RdICR

Read internal calibration register as pointed to by ICRA and load data into DHR[15:0].

0100

RdEEP

Read internal EEPROM location and load data into DHR[7:0] pointed by IEEA [9:0].

0101

RdIRS

Read interface register set pointer IRSP[3:0]. See Table 12.

0110

RdAlg

Output the multiplexed analog signal onto OUT. The analog location is specified in ALOC[3:0]

(Table 14) and the duration (in byte times) that the signal is asserted onto the pin is specified in

ATIM[3:0] (Table 13).

0111

PageErase

Erases the page of the EEPROM as pointed by IEEA[9:6]. There are 64 bytes per page and thus 12

pages in the EEPROM.

1000 to

1111

Reserved

Reserved.

Table 11. IRCA Decode

ICRA[3:0]

NAME

DESCRIPTION

0000

CONFIG

Configuration Register

0001

ODAC

Offset DAC Register

0010

OTCDAC

Offset Temperature Coefficient DAC Register

0011

FSODAC

Full Scale Output DAC Register

0100

FSOTCDAC

Full Scale Output Temperature Coefficient DAC Register

0101

Reserved. Do not write to this location (EEPROM test).

0110 to

1111

Reserved. Do not write to this location.