Motorola MPC8260 - Manual (Page 775)

MOTOROLA Chapter 28. Fast Communications Controllers (FCCs) 28-17
Part IV. Communications Processor Module
Figure 28-7. Output Delay from CTS Asserted
If it is programmed to envelope the data, CTS must remain asserted during frame
transmission or a CTS lost error occurs. The negation of CTS forces RTS high and the
transmit data to the idle state. If GFMR[CTSS] = 0, the FCC must sample CTS before a
CTS lost is recognized. Otherwise, the negation of CTS immediately causes the CTS lost
condition. See Figure 28-8.
1. GFMR_H[CTSS] = 0. CTSP is a donÕt care.
TCLK
TXD
Last Bit of Frame Data First Bit Of Frame Data
Note:
CTS Sampled Low
1. GFMR_H[CTSS] = 1. CTSP is a donÕt care.
TCLK
TXD
Last Bit of Frame Data First Bit of Frame Data
Note:
(Output)
RTS
(Output)
CTS
(Input)
(Output)
RTS
(Output)
CTS
(Input)