Datasheet

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D
IN
1101 1111
• • •
(1)
xxxx xxxx
D
OUT
Checksum
D
IN
1110 0010
• • •
(1)
xxxx xxxx
D
OUT
Checksum
D
IN
1110 1000
• • •
(1)
xxxx xxxx
D
OUT
Checksum
ADS1218
SBAS187C – SEPTEMBER 2001 – REVISED SEPTEMBER 2005
CSREG Calculate the Checksum of Registers
Description: Calculate the checksum of all the registers. The checksum is calculated as a sum of all the bytes
with the carry ignored. The ID, DRDY, and DIO bits are masked so they are not included in the checksum.
Operands: None
Bytes: 1
Encoding: 1101 1111
Data Transfer Sequence:
NOTE: (1) For wait time, refer to timing specification.
CSRAM Calculate RAM Bank Checksum
Description: Calculate the checksum of the selected RAM Bank. The checksum is calculated as a sum of all the
bytes with the carry ignored. All bits are included in the checksum calculation; there is no masking of bits.
Operands: a
Bytes: 1
Encoding: 1110 0aaa
Data Transfer Sequence:
Calculate Checksum for RAM Bank 2
NOTE: (1) For wait time, refer to timing specification.
CSARAM Calculate Checksum for all RAM Banks
Description: Calculate the checksum of all RAM Banks. The checksum is calculated as a sum of all the bytes
with the carry ignored. All bits are included in the checksum calculation; there is no masking of bits.
Operands: None
Bytes: 1
Encoding: 1110 1000
Data Transfer Sequence:
NOTE: (1) For wait time, refer to timing specification.
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