28HS01GTAM03 datasheet(86/138 Pages) INFINEON

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Datasheet

86 of 138

002-18216 Rev. *W

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

Octal interface, 1.8V/3.0V

Registers

5.11

Memory array data integrity check CRC register (DCRV)

The memory array Data Integrity Check CRC Register (DCRV) stores the results of the CRC calculation on the data

contained between the specified starting and ending addresses.

5.12

ECC status register (ESCV)

The ECC Status Register (ESCV) contains the ECC status of any error correction action performed on the unit data

whose byte was addressed during last read.

Note Unit data is defined as the number of bytes over which the ECC is calculated. HL-T/HS-T family devices have

a 16 bytes (128 bits) unit data.

Table 57

Memory array data integrity check CRC register

Bit

number

Name

Function

Read/Write

N = Nonvolatile

V = Volatile

Factory default

(binary)

Description

DCRV[31:0] DTCRCV[31:0]

Memory Array Data

CRC Checksum

Value

V -> R

0x00000000

Description: The DTCRCV[31:0 bits store the checksum value of

the CRC process on the memory array data contained within the

starting address and the ending address.

Selection Options: Checksum Value

Dependency: N/A

Table 58

ECC status register

Bit

number

Name

Function

Read/Write

N = Nonvolatile

V = Volatile

Factory default

(binary)

Description

ECSV[7:5]

RESRVD

Reserved for Future

Use

V -> R

000

This bit is Reserved for future use. This bit must always be

written/loaded to its default state.

ECSV[4]

ECC2BT

ECC Error 2-bit Error

Detection Flag

V -> R

Description: The ECC2BT bit indicates that a 2-bit ECC Error was

detected in the data unit (16 bytes). A Clear ECC Status Register

transaction (CLECC_0_0) will reset ECC2BT.

Note ECC2BT is updated every time any memory address is read

and is sticky, i.e. once it is set, it remains set. The ECC2BT status

is maintained until a Clear ECC Status Register transaction

(CLECC_0_0) is executed.

Note ECC1BT is not valid if ECC2BT status flag is set.

Selection Options:

0 = No 2-Bit ECC Error was detected in the data unit (16 bytes)

1 = 2-bit ECC Error was detected in the data unit (16 bytes)

Dependency: CFR4x[3]

ECSV[3]

ECC1BT

ECC Error 1-bit Error

Detection and

Correction Flag

V -> R

Description: The ECC1BT bit indicates that a 1-bit ECC Error was

detected and corrected in the data unit (16 bytes). A Clear ECC

Status Register transaction (CLECC_0_0) will reset ECC1BT.

Note ECC1BT is updated every time any memory address is read

and is sticky, i.e. once it is set, it remains set. The ECC1BT status

is maintained until a Clear ECC Status Register transaction

(CLECC_0_0) is executed.

Selection Options:

0 = No 1-Bit ECC Error was detected in the data unit (16 bytes)

1 = 1-bit ECC Error was detected in the data unit (16 bytes)

Dependency: N/A

ECSV[2:0]

RESRVD

Reserved for Future

Use

V -> R

000

This bit is Reserved for future use. This bit must always be

written/loaded to its default state.

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