CXD5602 User Manual
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876/1010
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3.10.2.2
Register Descriptions
Table SPI-749 shows descriptions of the registers added for control of Chip Select.
Table SPI-733
SPI0 register Descriptions
Address
Register
Name
Bit Field
Name
Type
Bit
Initial
Value
Description
0x041AB090
CS_MODE
Reserved
RO
[15:1]
0
Reserved
cs_mode
RW
[0]
1'b0
Chip Select (CS)
0: Uses CS of PL022
1: Uses CS of SSP_CS (register setting)
0x041AB094
SSP_CS
Reserved
RO
[15:1]
0
Reserved
ssp_cs
RW
[0]
1'b1
Chip Select setting
0: SPI communication active
1: SPI communication inactive
3.10.2.3
Clock and Reset
Figure SPI-96 shows the clock and reset system diagram of the SPI0.
To access the SPI0 register, supply the clock to the AHB/APB Bus Bridge.
SWRESET_BUS.XRST_SPIM
CK
GATE
SYSIOP_SUB_CKEN.SPIM
1/M
CKDIV_COM.CK_COM
0
3
2
1
RCOSC
XOSC
RTC_CLK_IN
(32.768kHz)
AHB/APB
BusBridge
CK
GATE
1/M
SYSIOP_SUB_CKEN.AHB_BRG_COMIF
ck_cpu_bus
CKDIV_CPU_DSP_BUS.CK_M0
ck_rf_pll_1
PWD_RESET0.PWD_SYSIOP_SUB
ck_ahb_gear
ck_com_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
SPI0
PCLK
SSPCLK
nSSPRST
PRESETn
Auto(PWD_SYSIOP_SUB Power Domain ON)
1/M
CKDIV_CPU_DSP_BUS.CK_AHB
CK
GATE
SYSIOP_SUB_CKEN.COM_BRG
CKSEL_ROOT.STAT_CLK_SEL4
Figure SPI-96
SPI0 Clock and Reset System
Summary of Contents for CXD5602
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