1-channel library – supports 1 channel using 1 consecutive pins on different SNS and SNSK ports (or) supports 1 channel using 2 consecutive pins on the same port used for both SNS and SNSK lines. This library requires 1 or 2 port.
2-channel library – supports up to 2 channels using 2 consecutive pins on different SNS and SNSK ports (or) supports up to 2 channels using 4 consecutive pins on the same port used for both SNS and SNSK lines. This library requires 1 or 2 ports.
4-channel library – supports up to 4 channels using 4 consecutive pins on different SNS and SNSK ports (or) supports up to 4 channels using 8 consecutive pins on the same port used for both SNS and SNSK lines. This library requires 1 or 2 ports.