Crb Syn Bit Operation - Motorola DSP56303 User Manual

External Transmit Clock
SCK
Internal Clock
ESSI Bit
Clock
External Receive Clock
SC0
NOTE: Transmitter and receiver may have different clocks and frame syncs.
External Clock
SCK
Internal Clock
ESSI Bit
Clock
NOTE: Transmitter and receiver may have the same clock frame syncs.
Asynchronous (SYN = 0)
Transmitter
Clock
Clock
Receiver
SYNCHRONOUS (SYN = 1)
Transmitter
Clock
Clock
Receiver
Figure 7-7. CRB SYN Bit Operation
Enhanced Synchronous Serial Interface (ESSI)
ESSI Programming Model
STD
Frame
SYNC
External Transmit Frame
Internal Frame SYNC
External Receive Frame
Frame
SYNC
SR
ST
Frame
SYNC
External Frame SYNC
Internal Frame SYNC
Frame
SYNC
SRD
SC2
SC1
SC2
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