Miscellaneous registers (Misc)
RM0082
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Doc ID 018672 Rev 1
12.4.14 AMEM_CFG_CTRL
register
The AMEM_CFG_CTRL is an R/W register which configures and controls the
asynchronous/synchronous memory port-1 source clock definition.
The output frequency originated from the x/y clock synthesizer is given from the next
equation:
with Y < 256; X < Y/2; Fin = (ref. amem_synt_enb source clock definition).
The register bit assignments is detailed in the next table.
Table 168.
PRSC1/2/3_CLK_CFG register bit assignments
PRSC1_CLK_CFG Register
PRSC2_CLK_CFG
PRSC3_CLK_CFG
0x044
0x048
0x04C
Bit
Name
Reset
Value
Description
[31:16]
RFU
-
Reserved for future use (Write don’t care - Read return
zeros).
[15:12]
presc_n
4’h0
N (3:0) constant factor division value: N < 16.
[11:00]
presc_m
12’h0
M (11:0) constant division value: M < 4096.
Table 169.
AMEM_CFG_CTRL register bit assignments
AMEM_CFG_CTRL Register
0x050
Bit
Name
Reset
Value
Description
[31:24]
amem_xdiv
8’h0
X(7:0) clock synthesizer constant division: X < Y/2.
[23:16]
amem_ydiv
8’h0
Y(7:0) clock synthesizer constant division: Y<256.
[15]
amem_rst
1’h0
Memory port-1 soft reset command:
1’b0: Disable soft reset.
1’b1: Active soft reset command.
[14:05]
RFU
-
Reserved for future use (Write don’t care - Read return
zeros).
[04]
amem_synt_enb
1’h0
Enable memory port-1 clock synthesizer:
1’b0: Disable memory clock synthesizer; memory clock is
provided in agree with the amem_clksel source clock
definitions.
1’b1: Enable memory clock synthesizer; memory clock is
provided from clock synthesizer logic (ref. amen Fout
equation)
F
out
Fin
X
Y
----
×
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