MPC8280 datasheet(699/1386 Pages) FREESCALE

Part #	MPC8280

Description	PowerQUICC??II Family Reference Manual

PDF	1386 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

Logo

699 / 1386 page

Serial Communications Controllers (SCCs)

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

Freescale Semiconductor

20-19

Figure 20-11. CTS Lost in Synchronous Protocols

Note that if GSMR_H[CTSS] = 1, CTS transitions must occur while the Tx clock is low.

Reception delays are determined by CD as shown in Figure 20-12. If GSMR_H[CDS] is zero, CD is

sampled on the rising Rx clock edge before data is received. If GSMR_H[CDS] is 1, CD transitions cause

data to be immediately gated into the receiver.

1. GSMR_H[CTSS] = 0. CTSP=0 or no CTS lost can occur.

TCLK

TXD

First Bit of Frame Data

NOTE:

CTS Sampled Low Here

1. GSMR_H[CTSS] = 1. CTSP=0 or no CTS lost can occur.

TCLK

First Bit of Frame Data

NOTE:

CTS Sampled High Here

Data Forced High

RTS Forced High

Data Forced High

RTS Forced High

CTS Lost Signaled in Frame B

(Output)

RTS

(Output)

CTS

(Input)

CTS

(Input)

RTS

(Output)

TXD

(Output)

MPC8280 Datasheet(PDF) 699 Page - Freescale Semiconductor, Inc