PXR40RM Datasheet, PDF (1012/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Enhanced Queued Analog-to-Digital Converter (EQADC)
Address: 0x0098
Access: User read/write
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
R0
0
0
0
0
W
TC_CF4
Reset 0
0
0
0
0
0
0
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
R0
0
0
0
0
W
TC_CF5
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 27-14. EQADC CFIFO Transfer Counter Register 2 (EQADC_CFTCR2)
Table 27-13. EQADC_CFTCRx Field Descriptions
Field
Description
0–4 Reserved
16–20
5–15 Transfer Counter for CFIFOx. TC_CFx counts the number of commands which have been completely transferred
21–31 from CFIFOx. The transfer of entries bound for the on-chip ADCs is considered completed when they are stored in
TC_CFx the appropriate CBuffer. The EQADC increments the TC_CFx value by one after a command is transferred. TC_CFx
resets to zero after EQADC completes transferring a command with an asserted EOQ bit. Writing any value to
TC_CFx sets the counter to that written value.
Note: If CFIFOx is in TRIGGERED state when its MODEx field is programmed to disabled, the exact number of
entries transferred from the CFIFO until that point - TC_CFx - is only known after the CFIFO status changes
to IDLE, as indicated by CFSx. For details refer to Section 27.7.4.6.1, Disabled Mode.
27.6.2.9 EQADC CFIFO Status Snapshot Registers (EQADC_CFSSR)
The EQADC CFIFO Status Snapshot Registers (EQADC_CFSSR) contain status fields to track the
operation status of each CFIFO and the transfer counter of the last CFIFO to initiate a command transfer
to the internal CBuffers. EQADC_CFSSR0-1 are related to the on-chip CBuffers (CBuffer0-1). All fields
of a particular EQADC_CFSSR register are captured at the beginning of a command transfer to the
CBuffer associated with that register. Note that captured status register values are associated with previous
command transfer. This means that the CFSSR registers capture the status registers before the status
registers change because of the transfer of the current command that is about to be popped from the CFIFO.
The EQADC_CFSSR registers are read only. Writing to the EQADC_CFSSR registers has no effect.
27-30
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor