Enhanced Queued Analog-to-Digital Converter (eQADC)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
18-76
Freescale Semiconductor
In single-scan modes, command transfers from the corresponding CFIFO cease when the eQADC
completes the transfer of a entry with an asserted EOQ. Software involvement is required to rearm the
CFIFO so that it can detect new trigger events.
NOTE
An asserted EOQF
n
only implies that the eQADC has finished transferring
a command with an asserted EOQ bit from CFIFO
n
. It does not imply that
result data for the current command and for all previously transferred
commands has been returned to the appropriate RFIFO.
18.4.3.6.3
Pause Status
In edge trigger mode, when the eQADC completes the transfer of a CFIFO entry with an asserted pause
bit, the eQADC stop future command transfers from the CFIFO and set EQADC_FISRn[PF]. The eQADC
ignores the pause bit in command messages in any software level trigger mode. The eQADC sets the PF
flag upon detection of an asserted pause bit only in single or continuous-scan edge trigger mode. When the
PF flag is set for a CFIFO in single-scan edge trigger mode, the EQADC_FISRn[SSS] bit is not cleared.
Refer to the following sections for more information:
Section 18.3.2.8, “eQADC FIFO and Interrupt Status Registers 0–5 (EQADC_FISRn)
”
Section 18.3.2.8, “eQADC FIFO and Interrupt Status Registers 0–5 (EQADC_FISRn)
”
Section 18.4.1.2, “Message Format in eQADC
,” for information on command message formats.
In level trigger mode, the definition of the PF flag has been redefined. In level trigger mode, when CFIFO
n
is in TRIGGERED status, PF
n
is set when the CFIFO status changes from TRIGGERED due to detection
of a closed gate. The pause flag interrupt routine can be used to verify if the a complete scan of the
command queue was performed. If a closed gate is detected while no command transfers are taking place,
it has immediate effect on the CFIFO status. If a closed gate is detected during the serial transmission of a
command to the external device, it has no effect on the CFIFO status until the transmission completes.
When EQADC_CFCR[PIE] and EQADC_FISRn[PF] are asserted, the eQADC generates a pause
interrupt request. Refer to
Section 18.3.2.6, “eQADC CFIFO Control Registers 0–5 (EQADC_CFCRn)
”
for more information.
NOTE
In edge-trigger mode, an asserted PF
n
only implies that the eQADC finished
transferring a command with an asserted pause bit from CFIFO
n
. It does not
imply that result data for the current command and for all previously
transferred commands has been returned to the RFIFO.
NOTE
In software or level trigger mode, when the eQADC completes the transfer
of an entry from CFIFO
n
with an asserted pause bit, PF
n
is not set and the
command transfers continues without pausing.
Содержание MPC5565
Страница 18: ...MPC5565 Microcontroller Reference Manual Devices Supported MPC5565 MPC5565 RM Rev 1 0 09 2007...
Страница 34: ...MPC5565 Reference Manual Rev 1 0 Freescale Semiconductor 15...
Страница 35: ...MPC5565 Reference Manual Rev 1 0 16 Freescale Semiconductor...
Страница 325: ...Error Correction Status Module ECSM MPC5565 Microcontroller Reference Manual Rev 1 0 8 16 Freescale Semiconductor...
Страница 515: ...External Bus Interface EBI MPC5565 Microcontroller Reference Manual Rev 1 0 12 70 Freescale Semiconductor...
Страница 553: ...Flash Memory MPC5565 Microcontroller Reference Manual Rev 1 0 13 38 Freescale Semiconductor...
Страница 559: ...SRAM MPC5565 Microcontroller Reference Manual Rev 1 0 14 6 Freescale Semiconductor...
Страница 577: ...Boot Assist Module BAM MPC5565 Microcontroller Reference Manual Rev 1 0 15 18 Freescale Semiconductor...
Страница 895: ...Deserial Serial Peripheral Interface DSPI MPC5565 Microcontroller Reference Manual Rev 1 0 19 72 Freescale Semiconductor...
Страница 973: ...Preface MPC5565 Microcontroller Reference Manual Rev 1 0 21 36 Freescale Semiconductor...
Страница 1145: ...MPC5565 Register Map MPC5565 Microcontroller Reference Manual Rev 1 0 A 60 Freescale Semiconductor...
Страница 1153: ...Calibration MPC5565 Microcontroller Reference Manual Rev 1 0 B 8 Freescale Semiconductor...