CLOCK CLOCK nRESET nRESET STROBE STROBE A0 A0 A1 A1 A2 A2 A3 A3 B0 B0 B1 B1 B2 B2 B3 B3 ACK ACK READY READY P0 P0 P1 P1 P2 P2 P3 P3 P4 P4 P5 P5 P6 P6 P7 P7