26HS01GTAM03 datasheet(52/166 Pages) INFINEON

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Datasheet

52 of 166

002-12337 Rev. *Y

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

HYPERBUS™ interface, 1.8V/3.0V

Features

4.7

AutoBoot

AutoBoot allows the host to read data from HL-T/HS-T family of devices after power up or after a hardware reset

without having to send any read transactions (including the address). Based on the device configuration, data is

output on the interface I/Os once CS# is brought Low and CK is toggled.

The starting address for the read data is specified in the AutoBoot Register (ATBN[31:9] - STADR[22:0]). This

starting address can be at any page boundary location in the memory (512 byte page boundary). Also identified

in the AutoBoot Register is a starting delay which is represented as the number of clock cycles (ATBN[8:1] -

STDLY[7:0]). This delay is instituted before the data is read out. The delay can be programmed to meet the host's

requirements but a minimum amount is required to meet the memory access times based on the frequency for

operation. It is highly recommended to check the Status Register 1 value after successful or unsuccessful

AutoBoot execution to verify the configuration corruption (SafeBoot).

Note Wrap function must be disabled for AutoBoot.

Note AutoBoot is disabled when the Read Password feature is enabled, as part of the Advanced Sector

Protection. It is recommended to disable AutoBoot (ATBN[0] - ATBTEN) when Read Password feature is enabled.

Note Autoboot with Interface CRC enabled requires reading out at least 4 words of data.

Note It is highly recommended to assign first AutoBoot address in the Long Retention region.

4.7.1

HYPERBUS™ AutoBoot related registers and transactions

4.7.2

Legacy (x1) SPI AutoBoot related registers and transactions

Table 39

HYPERBUS™ AutoBoot related registers and transactions

Related registers

(see Section 5.2 HYPERBUS™ registers on page 90)

Related HYPERBUS™ transactions

(see Table 120 on page 124)

AutoBoot Register (ATBN)

Program AutoBoot Register (PGNATB_2_1) - AutoBoot ASO

Read AutoBoot Register (RDATBN_1_0) - AutoBoot ASO

AutoBoot HYPERBUS™ Transaction

Table 40

Legacy (x1) SPI AutoBoot related registers and transactions

Related registers

(see Section 5.3 Legacy (x1) SPI registers on page 106)

Related SPI transactions

(see Table 122 on page 137)

AutoBoot Register (ATBN)

Read Any Register (RDARG_4_0)

Write Any Register (WRARG_C_1)

AutoBoot Transaction

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