
30-24
MPC860 PowerQUICC UserÕs Manual
MOTOROLA
Part V. The Communications Processor Module
SMSYN. Chapter 21, ÒSerial Interface,Ó describes how to conÞgure time slots. The TSA
allows the SMC receiver and transmitter to be enabled simultaneously and synchronized
separately; SMSYN does not provide this capability. Figure 30-12 shows synchronization
using the TSA.
Figure 30-12. Synchronization with the TSA
Once SMCMR[REN] is set, the Þrst time-slot after the frame sync causes the SMC receiver
to achieve synchronization. Data is received immediately, but only during deÞned receive
time slots. The receiver continues receiving data during its deÞned time slots until REN is
cleared. If an
ENTER
HUNT
MODE
command is issued, the receiver loses synchronization,
closes the buffer, and resynchronizes to the Þrst time slot after the frame sync.
Once SMCMR[TEN] is set, the SMC waits for the transmit FIFO to be loaded before trying
to achieve synchronization. If only a single time slot in a TDM frame is assigned to the
SMC, SMC transmission, as well as reception, is always synchronized to the beginning of
that time slot. If multiple time slots in a TDM frame are assigned to the SMC (as shown in
Figure 30-12), then synchronization depends on the order of initialization.
TDM Tx CLK
TDM Tx SYNC
TDM Tx
After TEN
If SMC runs out of Tx buffers and new ones
are provided later, transmission begins at
is set,
transmission
begins here.
the beginning of either time slot.
SMC1
SMC1
TDM Rx CLK
TDM Rx SYNC
TDM Rx
After REN is set or after
ENTER
HUNT
MODE
command,
reception begins here.
SMC1
SMC1
Summary of Contents for MPC860 PowerQUICC
Page 3: ...MPC860UM AD 07 98 REV 1 MPC860 PowerQUICC ª UserÕs Manual ...
Page 36: ...xxxvi MPC860 PowerQUICC UserÕs Manual MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 78: ...I iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 88: ...1 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 114: ...3 16 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 226: ...8 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 262: ...9 36 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 274: ...III iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 320: ...12 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 325: ...MOTOROLA Part IV Hardware Interface IV v Part IV Hardware Interface ...
Page 326: ...IV vi MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
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Page 632: ...21 44 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 660: ...22 28 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
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Page 998: ...37 48 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part VI Debug and Test ...
Page 1016: ...A 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1024: ...B 8 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1030: ...C 6 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1086: ...Glossary 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA ...
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