8.3.5 DCP Auto-Detect

The devices integrate an auto-detect feature to support divider mode, short mode and 1.2 V / 1.2 V modes. If a divider device is attached, 2.7 V is applied to the DP pin and 2 V is applied to the DM pin. If a BC1.2-compliant device is attached, the TPS2513 and TPS2514 automatically switches into short mode. If a device compliant with the 1.2 V / 1.2 V charging scheme is attached, 1.2 V is applied on both the DP pin and the DM pin. The functional diagram of DCP auto-detect feature (DM1 and DP1) is shown in Figure 15. DCP auto-detect feature (DM2 and DP2 of TPS2513) has the same functional configuration. For TPS2513A and TPS2514A, the devices also have DCP auto-detect feature and the auto-detect have the same functional configuration expect for the default mode is Divider 3 (D+/D– = 2.7 V / 2.7 V).

Figure 15. TPS2513 and TPS2514 DCP Auto-Detect Functional Diagram