Register definition: 
Status Register 1: S7 - S0
  Bit        Name                            Settings:    
   7         Status Register Protect         0: Disabled(Default), 1: Enabled
   6         Tob/Bottom Protection           0: TOP, 1: BOTTOM
  5-2        Block Protection Bits[3:0]      See Protected Area table

Status Register 2: S15 - S8
  Bit        Name                            Settings:    
   15        Suspend Status - read only 
   14        Complement Protect              0: non-reversed, 1: reversed 
 13-11       Security Register Lock Bits 3-1 0: Unlocked, 1: Locked (OTP)
   9         Quad Enable                     0: Disabled, 1: Enabled
   8         Status Register Lock - volatile         

Status Register 3: S23 - S16
  Bit        Name                            Settings:
   23        Reserved
 22-21       Output Drive Strength 1-0       00:100%, 01:75%, 10:50%, 11:25%(Default)
   18        Write Protect Selection         0: CMP-TB-BP[3:0], 1: Individual Block Lock
   17        Power-Up Address Mode           0: 3-Byte Mode(Default) 1: 4-Byte Mode
   16        Current Address Mode - read only