26HS01GTAM03 datasheet(57/166 Pages) INFINEON

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Datasheet

57 of 166

002-12337 Rev. *Y

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

HYPERBUS™ interface, 1.8V/3.0V

Features

4.8.4

Data strobe (DS) - HYPERBUS™

To allow for higher data rates, data strobe signal (DS) is added to DDR devices. The data strobe is

non-free-running signal driven by the device, which is also driving the data signals. At the board level, the strobe

signal has identical loading to data signals and needs to be routed similarly. During the period of data transfer in

a read transaction, the Data Strobe (DS) signal is driven by the device and transitions edge aligned with the IO

signal data transitions. DS is used as an additional output signal with the same timing characteristics as other

data outputs but with the guarantee of transitioning with every data bit transferred. The DS signal transitions can

be received and internally phase shifted by the master to be used as an internal read data clock to capture each

data bit transferred.

DS behavior is described as follows:

• DS will start transiting upon valid data

• DS will continue to toggle as long as CS# is low and CK/CK# is toggling. Exceptions to this rule are:

- Inter-page boundary latency

- DS Stall upon detecting an ECC error when reading a Half-page of data.

4.8.5

Burst types

The device supports three burst types during Read transactions:

•Linear Burst

•Wrapped Burst

• Hybrid Burst - HYPERBUS™

Linear burst start at a selected location and output data in a sequential manner (can read the whole memory

array).

Wrapped burst accesses start at a selected location and continue for a configured number of locations in a group

wrap sequence.

Table 47

Example burst sequences

CFR1x

[1:0]

CA[45]

Wrap boundary (bytes)

Start address (hex)

Address sequence (hex) (words)

Linear

XXXXXX03

03, 04, 05, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10, 11, 12, 13, 14, 15,

16, 17, 18, ...

XXXXXX02

02, 03, 04, 05, 06, 07, 00, 01, ...

XXXXXX0C

0C, 0D, 0E, 0F, 08, 09, 0A, 0B, ...

XXXXXX0A

0A, 0B, 0C, 0D, 0E, 0F, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, ...

XXXXXX1E

1E, 1F, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 1A, 1B, 1C, 1D, ...

XXXXXX03

03, 04, 05, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10, 11, 12, 13, 14, 15,

16, 17, 18, 19, 1A, 1B, 1C, 1D, 1E, 1F, 00, 01, 02, ...

XXXXXX2E

2E, 2F, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 3A, 3B, 3C, 3D, 3E, 3F, 20,

21, 22, 23, 24, 25, 26, 27, 28, 29, 2A, 2B, 2C, 2D, ...

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