Musca-S1 board
Musca-S1 test chip
XTAL
32K
0
1
0
1
32MHz
FASTCLK
PREDIV
CLK_CTRL_SEL[0]
PLL0
0
1
Debug
connector
0
1
PRE_PLL_CLK
0
1
PLL0_CLK
PRE_MUX_CLK
SSE-200
FCLK
DIV
SYSCLK
DIV
RTCDIV
QSPIDIV
QSPI
I
2
S
I
2
C0
I
2
C1
PVT
GPT
RTC
GPIO
PWM
Code
SRAM
CLK1HZ
DAPLink
DAP
SCCCLK
SCC
IOMUX
Arduino
Shield
TEST_CLK
FCLK
SYSSYSUG CLK
REFCLK
MAINCLK
CG
CG
CG
CG
CG
Debug
expansion
CG
DEBUGFCLK
SCCMUX
CG
CG
CG
MAINMUX
CG
0
26
...
I2SCLK2
0V
TESTDIV
CG
CG
CG
DAPSWMUX
TESTMUX
PREMUX
REFMUX
CPU1
CPU0
DEBUGUGPIKCLK
DEBUGSYSCLK
BBGEN
CG
RM38KCLK
0
1
BBGENDIV
RM38KMUX
CG
MRAM_DIV
eMRAM
SCCCLK
DAPSWCLK
32K
TCK
Figure 2-4 Musca-S1 clock system
See the
Arm
®
CoreLink
™
SSE
‑
200 Subsystem for Embedded Technical Reference Manual (r1p0)
for
information on the clock system in the SSE-200 subsystem.
Controlling clock frequencies
The SCC registers control the clock system. See
3.11 Serial Configuration Control registers
. The following table shows the SCC clock control registers.
2 Hardware description
2.5 Clocks
101835_0000_01_en
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2-29
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