
20.3.19 Hardware Request Status Register (DMAx_HRS)
The HRS register provides a bit map for the DMA channels, signaling the presence of a
hardware request for each channel. The hardware request status bits reflect the current
state of the register and qualified (via the ERQ fields) DMA request signals as seen by
the DMA’s arbitration logic. This view into the hardware request signals may be used for
debug purposes.
NOTE
These bits reflect the state of the request as seen by the
arbitration logic. Therefore, this status is affected by the ERQ
bits.
Address: 4000_8000h base + 34h offset = 4000_8034h
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
HRS7 HRS6 HRS5 HRS4 HRS3 HRS2 HRS1 HRS0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
DMAx_HRS field descriptions
Field
Description
31–8
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
7
HRS7
Hardware Request Status Channel 7
The HRS bit for its respective channel remains asserted for the period when a Hardware Request is
Present on the Channel. After the Request is completed and Channel is free, the HRS bit is automatically
cleared by hardware.
0
A hardware service request for channel 7 is not present
1
A hardware service request for channel 7 is present
6
HRS6
Hardware Request Status Channel 6
The HRS bit for its respective channel remains asserted for the period when a Hardware Request is
Present on the Channel. After the Request is completed and Channel is free, the HRS bit is automatically
cleared by hardware.
0
A hardware service request for channel 6 is not present
1
A hardware service request for channel 6 is present
5
HRS5
Hardware Request Status Channel 5
Table continues on the next page...
Chapter 20 Enhanced Direct Memory Access (eDMA)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors
437
Содержание K32 L2A Series
Страница 2: ...K32 L2A Reference Manual Rev 2 01 2020 2 NXP Semiconductors...
Страница 42: ...K32 L2A Reference Manual Rev 2 01 2020 42 NXP Semiconductors...
Страница 122: ...Flash Memory Clock K32 L2A Reference Manual Rev 2 01 2020 122 NXP Semiconductors...
Страница 146: ...Module operation in low power modes K32 L2A Reference Manual Rev 2 01 2020 146 NXP Semiconductors...
Страница 158: ...Debug and security K32 L2A Reference Manual Rev 2 01 2020 158 NXP Semiconductors...
Страница 174: ...Module Signal Description Tables K32 L2A Reference Manual Rev 2 01 2020 174 NXP Semiconductors...
Страница 246: ...Application information K32 L2A Reference Manual Rev 2 01 2020 246 NXP Semiconductors...
Страница 322: ...Kinetis Bootloader Status Error Codes K32 L2A Reference Manual Rev 2 01 2020 322 NXP Semiconductors...
Страница 344: ...Application initialization information K32 L2A Reference Manual Rev 2 01 2020 344 NXP Semiconductors...
Страница 374: ...CMP Trigger Mode K32 L2A Reference Manual Rev 2 01 2020 374 NXP Semiconductors...
Страница 384: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 384 NXP Semiconductors...
Страница 592: ...Application Information K32 L2A Reference Manual Rev 2 01 2020 592 NXP Semiconductors...
Страница 602: ...Initialization and application information K32 L2A Reference Manual Rev 2 01 2020 602 NXP Semiconductors...
Страница 656: ...Functional Description K32 L2A Reference Manual Rev 2 01 2020 656 NXP Semiconductors...
Страница 664: ...Functional Description K32 L2A Reference Manual Rev 2 01 2020 664 NXP Semiconductors...
Страница 744: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 744 NXP Semiconductors...
Страница 762: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 762 NXP Semiconductors...
Страница 806: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 806 NXP Semiconductors...
Страница 868: ...Integer square root K32 L2A Reference Manual Rev 2 01 2020 868 NXP Semiconductors...
Страница 976: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 976 NXP Semiconductors...
Страница 1012: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1012 NXP Semiconductors...
Страница 1094: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1094 NXP Semiconductors...
Страница 1132: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1132 NXP Semiconductors...
Страница 1182: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1182 NXP Semiconductors...
Страница 1290: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1290 NXP Semiconductors...
Страница 1344: ...USB Voltage Regulator Module Signal Descriptions K32 L2A Reference Manual Rev 2 01 2020 1344 NXP Semiconductors...
Страница 1356: ...Initialization Application Information K32 L2A Reference Manual Rev 2 01 2020 1356 NXP Semiconductors...