Register definition: 
Status Register 1: S7 - S0
  Bit       Name                                Settings
    7       Status Register Protection          0: Disabled (Default), 1: Enabled
    6       4KB Boot Lock bit                   0: 64KB-Block (Default), 1: 4KB-Block
    5       Top / Bottom Protect                0: Top (Default), 1: Bottom
  4-2       Block Protect Bits[2:0]             See Protected Area Table

Status Register 2: S7 - S0
    Bit     Name                                Settings
    6       Complement Protect bit              0: Disabled (Default), 1: Enabled 
    5       SPL0(OTP)                           0: unprotected (Default), 1: OTP1 sector is protected 
    4       SPL1(OTP)                           0: unprotected (Default), 1: OTP2 sector is protected 
    3       SPL2(OTP)                           0: unprotected (Default), 1: OTP3 sector is protected
    1       Quad Enable                         0: WP# and HOLD#/RESET# enable (default), 1: WP# and HOLD#/RESET# disable

Status Register 3: S7 - S0
  Bit       Name                                Settings
    7       HOLD/RST                            0: HOLD(Default), 1: RESET
  6-5       Output Driver Strength Bits         00: 67%(default), 01: 100%, 10: 50%, 11: 33%
  4-3       Burst Length                        00: 8 Bytes(default), 01: 16 Bytes, 10: 32 Bytes, 11: 64 Bytes