Motorola MPC860 PowerQUICC User Manual page 626

Part V. The Communications Processor Module
The SCC3 in NMSI mode has its own set of modem control signals:
¥ TXD3
¥ RXD3
¥ TCLK3 ¬ BRG1ÐBRG4, CLK5ÐCLK8
¥ RCLK3 ¬ BRG1ÐBRG4, CLK5ÐCLK8
¥ RTS3
¥ CTS3
¥ CD3
The SCC4 in NMSI mode has its own set of modem control signals:
¥ TXD4
¥ RXD4
¥ TCLK4 ¬ BRG1ÐBRG4, CLK5ÐCLK8
¥ RCLK4 ¬ BRG1ÐBRG4, CLK5ÐCLK8
¥ RTS4
¥ CTS4
¥ CD4
The SMC1 in NMSI mode has its own set of modem control signals:
¥ SMTXD1
¥ SMRXD1
¥ SMCLK1 ¬ BRG1ÐBRG4, CLK1ÐCLK4
¥ SMSYN1 (used only in the totally transparent protocol)
The SMC2 in NMSI mode has its own set of modem control signals:
¥ SMTXD2
¥ SMRXD2
¥ SMCLK2 ¬ BRG1ÐBRG4, CLK5ÐCLK8
¥ SMSYN2 (used only in the totally transparent protocol)
Unused SCC or SMC signals can be used for other functions or conÞgured for parallel I/O.
21-38 MPC860 PowerQUICC UserÕs Manual MOTOROLA