Miscellaneous registers (Misc)
RM0082
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Doc ID 018672 Rev 1
12.4.10 PRPH_CLK_CFG
register
The PRPH_CLK_CFG is an R/W register used to configure the peripheral source clock
definition. The register bit assignments is given in next table.
[11:10]
hclk_divsel
2’h0
PLL1_clkout to HCLK clock ratio definition (ref. next
table)
PLL1_clkout to HCLK configuration table
Control bit Ratio
Description
2’b00
1:1
Hclk to Pll1_clkout ratio.
2’b01
1:2
Hclk to Pll1_clkout ratio.
2’b10
1:3
Hclk to Pll1_clkout ratio.
2’b11
1:4
Hclk to Pll1_clkout ratio.
[09:08]
pclk_ratio_lwsp
2’h0
Low speed subsystem PCLK clock ratio divider (ref. next
table)
HCLK to PCLK clock ratio configuration table
Control bit Ratio
Description
2’b00
1:1
Hclk to Pclk clock ratio.
2’b01
1:2
Hclk to Pclk clock ratio.
2’b10
1:3
Hclk to Pclk clock ratio.
2’b11
1:4
Hclk to Pclk clock ratio.
[07:06]
RFU
-
Reserved for future use (Write don’t care - Read return
zeros).
[05:04]
pclk_ratio_basc
2’h0
Basic subsystem PCLK clock ratio divider (ref. HCLK to
PCLK clock ratio configuration table)
[03:02]
RFU
-
Reserved for future use (Write don’t care - Read return
zeros).
[01:00]
pclk_ratio_arm1
2’h0
ARM subsystem PCLK clock ratio divider (ref. HCLK to
PCLK clock ratio configuration table).
Table 164.
CORE_CLK_CFG register bit assignments (continued)
CORE_CLK_CFG Register
0x024
Bit
Name
Reset
Value
Description