CXD5602 User Manual
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3.8.4.1
Register List
Table DMAC-86 shows the registers that control the HDMAC.
Table DMAC-78
HDMAC Control Register List
Address
Register Name
Type
Description
initial
Value
0x04121000
|
0x04121FFC
Single Master DMA Controller (PL081)
register
-
3.8.4.2
Clock and Reset
Figure DMAC-45 shows the clock and reset system diagram of the HDMAC.
Reset of the HDMAC is automatically released when the PWD_SYSIOP power domain is turned ON.
0
3
2
1
RCOSC
XOSC
RTC_CLK_IN
(32.768kHz)
HDMAC
CK
GATE
ck_cpu_bus
CKDIV_CPU_DSP_BUS.CK_M0
ck_rf_pll_1
ck_ahb_gear
SYSPLL
0
3
2
1
0
1
1/2
1/3
1/4
1/5
CKSEL_ROOT.RFPLL1_STAT_CLK_SEL4
CKSEL_ROOT.CPU_PLL_DIV5
CKDIV_CPU_DSP_BUS.CK_AHB
HCLK
SYSIOP_CKEN.AHB_DMAC1
Auto(PWD_SYSIOP Power Domain ON)
HRESETn
1/M
1/M
CKSEL_ROOT.STAT_CLK_SEL4
Figure DMAC-45 HDMAC Clock and Reset System
3.8.4.3
Clock Supply Start and Stop
3.8.4.3.1
Clock Supply Start
Perform the following control to start supplying the HCLK clock of the HDMAC.
1.
Reset release
Automatically released when the PWD_SYSIOP power domain is turned ON.
2.
Clock supply start
SYSIOP_CKEN.AHB_DMAC1
=1'b1
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