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Enhanced Queued Analog-to-Digital Converter (eQADC)
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor
19-85
Figure 19-47. RFIFO Entry Pointer Example
19.4.4.2
Distributing Result Data into RFIFOs
Data to be moved into the RFIFOs can come from three sources: from ADC0, from ADC1, or from the
external device. All result data comes with a MESSAGE_TAG field defining what to do with the received
data. The FIFO control unit decodes the MESSAGE_TAG field and:
•
Stores the 16-bit data into the appropriate RFIFO if the MESSAGE_TAG indicates a valid RFIFO
number; or
•
Ignores the data in case of a null or “reserved for customer use” MESSAGE_TAG
First In
Pop
Next
Data
Pointer
Last In
Receive
Next
Data
Pointer
RFIFO
n
Pop
Next
Data
Pointer
Receive
Next
Data
Pointer
RFIFO
n
First In
Pop
Next
Data
Pointer
Last In
Receive
Next
Data
Pointer
RFIFO
n
After Reset or
Invalidation
Some Entries Received
but None Popped
No Entries Received
but Some Popped
First In
Pop
Next
Data
Pointer
Receive
Next
Data
Pointer
RFIFO
n
Pop
Next
Data
Pointer
Receive
Next
Data
Pointer
RFIFO
n
First In
Pop
Next
Data
Pointer
Last In
Receive
Next
Data
Pointer
RFIFO
n
No Entries Received
but Some Popped
Some Entries Received
and Some Popped
Entries Received Until
Full and None Popped
First In
Last In
Last In
Valid Entry
Empty Entry
NOTE:
n
= 0, 1, 2, 3, 4, 5
Summary of Contents for MPC5566
Page 81: ...Introduction MPC5566 Microcontroller Reference Manual Rev 2 1 24 Freescale Semiconductor...
Page 135: ...Signal Description MPC5566 Microcontroller Reference Manual Rev 2 2 54 Freescale Semiconductor...
Page 189: ...Reset MPC5566 Microcontroller Reference Manual Rev 2 4 20 Freescale Semiconductor...
Page 603: ...Flash Memory MPC5566 Microcontroller Reference Manual Rev 2 13 38 Freescale Semiconductor...
Page 609: ...SRAM MPC5566 Microcontroller Reference Manual Rev 2 14 6 Freescale Semiconductor...
Page 1073: ...MPC5566 Microcontroller Reference Manual Rev 2 22 36 Freescale Semiconductor...
Page 1185: ...Nexus MPC5566 Microcontroller Reference Manual Rev 2 25 92 Freescale Semiconductor...