The TAS2764 has a dedicated ICC bus pin that can be used for the Inter Chip Gain Alignment (Section 8.4.2.9). This data pin enables gain alignment without consuming slots on the TDM Port (Section 8.4.1). The ICC pin is connected to all TAS2764 devices in the system and slots are configured using register bits GAIN_SLOT[5:0]. This bus uses the TDM Port BCLK and FSYNC and requires all devices to be configured using the same sampling clock. The ICC pin supports separate bus keeper configuration from the SDOUT pin on the TDM bus. If the ICC pin is disabled or used for GPIO functionality the gain alignment (Section 8.4.2.9) will occur on the TDM bus instead of the ICC pin. Register bits ICC_MODE[2:0] are used to set the ICC pin functionality.