GD5F2GQ4RFZJS datasheet(39/57 Pages) GIGADEVICE

39 / 57 page

SPI(x1/x2/x4) NAND Flash

13.2.2 Hardware RESET Setting

LGA8 package

For the LGA8 package, RESET#, HOLD# and data IO3 share the same pin7. The pin7 can be configured as any of

the three functions depending on the status register setting. When QE=0, HOLDB/RST=1, the pin7 acts as a RESET#

pin. When QE=1 or QE=0 HOLDB/RST=0, the pin7 will be configured as the other functions and Hardware Reset

function can’t be used.

QE and HOLDB/RST registers can be set by Set Feature command (see Table13-2). QE can be set by Set Feature

command when address is B0H and HOLDB/RST can be set by Set Feature command when address is D0H. Both of

them can be read out by Get Feature command with related address. Through reading the status registers, users could

know the value and infer which function is supported on the pin7.

By default QE and HOLDB/RST registers are both 0 after power-on-reset or hardware reset.

Table13-2. Features Settings

Protection

A0H

BRWD

Reserved

BP2

BP1

BP0

INV

CMP

Reserved

Feature

B0H

OTP_PRT

OTP_EN

Reserved

ECC_EN

Reserved

Status

C0H

Reserved

ECCS2

ECCS1

ECCS0

P_FAIL

E_FAIL

WEL

OIP

Feature

D0H

HOLDB/RST

DS_IO[1]

DS_IO[0]

Reserved

BGA24 package

For BGA24 package (see Figure2-1), a dedicated RESET# pin is provided and it is independent of QE bit setting. At

the same time, HOLDB/RST register is not existed in BGA24, and the corresponding bit in command Set/Get Feature

with address D0H is reserved.

Table13-3. Features Settings

Protection

A0H

BRWD

Reserved

BP2

BP1

BP0

INV

CMP

Reserved

Feature

B0H

OTP_PRT

OTP_EN

Reserved

ECC_EN

Reserved

Status

C0H

Reserved

ECCS2

ECCS1

ECCS0

P_FAIL

E_FAIL

WEL

OIP

Feature

D0H

Reserved

DS_IO[1]

DS_IO[0]

Reserved

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