= ADC ERC and sparse readout controller =


 * [[SDB Device ID]] 0xa5fd23ba


Reg 0x0 - SDB Device ID, 32 bits, RO

Reg 0x2 - ERC Control, 16 bits, RO
   * [0] ERC enable
   * [15:1] unused

Reg 0x3 - Lock(unused), 16 bits, RO

Reg 0x4 - Sparse Control, 16 bits, RO
   * [0] sparse enable
   * [15:1] unused

Reg 0x5 - sparse read cell number, 16 bits, R/W

Reg 0x6 - sparse period, 16 bits, RO