ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 118 -
Revision 2.4
AHB Device Clock Enable Control Register
(
CLK_AHBCLK
)
These register bits are used to enable/disable the clock source for AHB (Advanced High-Performance
Bus) blocks. This is a protected register, to write to register,
first issue the unlock sequence
.
Register
Offset
R/W
Description
Reset Value
CLK_AHBCLK
0x04 R/W
AHB Device Clock Enable Control Register
0x0000_0005
7
6
5
4
3
2
1
0
Reserved
ISPCKEN
PDMACKEN
HCLKEN
Table 5-38 AHB Device Clock Enable Register (CLK_AHBCLK, address 0x5000_0204) Bit
Description.
Bits
Description
[31:3]
Reserved
Reserved.
[2]
ISPCKEN
Flash ISP Controller Clock Enable Control
0 = To disable the Flash ISP engine clock.
1 = To enable the Flash ISP engine clock.
[1]
PDMACKEN
PDMA Controller Clock Enable Control
0 = To disable the PDMA engine clock.
1 = To enable the PDMA engine clock.
[0]
HCLKEN
CPU Clock Enable (HCLK)
Must be left as 1 for normal operation.