6.4.3 Control/Status Register (MMDVSQ_CSR)
This register defines the operating configuration of divide operations and provides status
information. The upper 3 bits provide busy status indicators, while the low-order byte
defines the configuration for divide operations. The read-only status bits in CSR[31:29]
are valid for both divide and square root operations; the configuration and status bit in
CSR[5:0] are only valid for divides. A memory write access of the CSR register while the
module is busy during a calculation causes the access to be stalled (using wait states)
until the calculation completes.
Address: F000_4000h base + 8h offset = F000_4008h
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
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
* Notes:
x = Undefined at reset.
•
MMDVSQ_CSR field descriptions
Field
Description
31
BUSY
BUSY
This read-only bit is asserted when the MMDVSQ is performing a divide or square root. When an
operation is initiated, the hardware sets this flag. It remains asserted until the operation completes and the
Table continues on the next page...
Memory map and register definition
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
86
NXP Semiconductors
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