Enhanced Queued Analog-to-Digital Converter (eQADC)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
Freescale Semiconductor
18-23
Address: Base + 0x070 (EQADC_FISR0)
Base + 0x074 (EQADC_FISR1)
Base + 0x078 (EQADC_FISR2)
Base + 0x07C (EQADC_FISR3)
Base + 0x080 (EQADC_FISR4)
Base + 0x084 (EQADC_FISR5)
Access: Read/Write to clear
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R NCF
n
TORF
n
PF
n
EOQF
n
CFUF
n
SSS
n
CFFF
n
0
0
0
0
0
RFOF
n
0
RFDF
n
0
W
w1c
w1c
w1c
w1c
w1c
w1c
w1c
w1c
Reset
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
CFCTR
n
TNXTPTR
n
RFCTR
n
POPNXTPTR
n
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 18-9. eQADC FIFO and Interrupt Status Registers 0–5 (EQADC_FISR
n
)
Table 18-12. EQADC_FISR
n
Field Descriptions
Field
Description
0
NCF
n
Non-coherency flag
n
. NCF
n
is set whenever a command sequence being transferred through CFIFO
n
becomes
non-coherent. If NCIE
n
in EQADC_IDCRn (Refer to
Section 18.3.2.7, “eQADC Interrupt and eDMA Control
”) and NCF
n
are asserted, an interrupt request is generated. Writing a 1 clears
NCF
n
. Writing a 0 has no effect. More for information on non-coherency refer to
Sequence Non-Coherency Detection
.”
0 Command sequence being transferred by CFIFO
n
is coherent
1 Command sequence being transferred by CFIFO
n
became non-coherent
Note:
Non-coherency means that a command in the command FIFO was not immediately executed, but delayed.
This may occur if the command is pre-empted, where a higher priority queue is triggered and has a competing
conversion command for the same converter.
1
TORF
n
Trigger overrun flag for CFIFO
n
. TORF
n
is set when trigger overrun occurs for the specified CFIFO in edge or level
trigger mode. Trigger overrun occurs when an already triggered CFIFO receives an additional trigger. When
EQADC_IDCRn[TORIE
n]
is set (Refer to
Section 18.3.2.7, “eQADC Interrupt and eDMA Control Registers 0–5
”) and TORF
n
are asserted, an interrupt request is generated.
Apart from generating an independent interrupt request for a CFIFO
n
trigger overrun event, the eQADC also
provides a combined interrupt at which the result FIFO overflow interrupt, the command FIFO underflow interrupt,
and the command FIFO trigger overrun Interrupt requests of all CFIFOs are ORed. When RFOIE
n
, CFUIE
n
, and
TORIE
n
are all asserted, this combined interrupt request is asserted whenever one of the following 18 flags becomes
asserted: RFOF
n
, CFUF
n
, and TORF
n
(assuming that all interrupts are enabled). Refer to
,” for details.
Write 1 to clear the TORF
n
bit. Writing 0 has no effect.
0 No trigger overrun occurred
1 Trigger overrun occurred
Note:
The trigger overrun flag is not set for CFIFOs configured for software trigger mode.
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