MC145474 Datasheet, PDF (40/111 Pages) Motorola, Inc – ISDN S/T Interface Transceiver

SCP EN
SCP CLK
SCP Rx DON’T CARE R/W
A3 A2 A1 A0
DON’T CARE
D7 D6 D5 D4 D3 D2 D1 D0 DON’T CARE
SCP Tx
HIGH IMPEDANCE
Figure 5-6. Serial Control Port Byte Write Operation
Double 8-Bit Transaction