S25FS256S datasheet(72/154 Pages) SPANSION

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S25FS-S Family

S25FS-S_00_04 November 6, 2013

Data

Sheet

(Pre limin ar y)

8.6.6.2

Configuration Register 4 Volatile (CR4V)

Related Commands: Read Any Register (RDAR 65h), Write Any Register (WRAR 71h), Set Burst Length

(SBL C0h).

Output Impedance CR2V[7:5]: These bits control the IO signal output impedance (drive strength). This

volatile output impedance configuration bit enables the user to adjust the drive strength during normal

operation.

Wrap Enable CR4V[4]: This bit controls the burst wrap feature. This volatile configuration bit enables the

device to enter and exit burst wrapped read mode during normal operation.

Wrap Length CR4V[1:0]: These bits controls the wrapped read length and alignment during normal

operation. These volatile configuration bits enable the user to adjust the burst wrapped read length during

normal operation.

Table 8.26 Configuration Register 4 Volatile (CR4V)

Bits

Field Name

Function

Type

Default

State

Description

Output Impedance

Volatile

CR4NV

See Table 8.25, Output Impedance Control on page 71.

Wrap Enable

0 = Wrap Enabled.

1 = Wrap Disabled.

RFU

Reserved

Reserved for Future Use.

RFU

Reserved

Reserved for Future Use.

Wrap Length

00 = 8-byte wrap.

01 = 16-byte wrap.

10 = 32-byte wrap.

11 = 64-byte wrap.

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