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