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CY7C67300
Document #: 38-08015 Rev. *J Page 18 of 99
CPU Speed Register [0xC008] [R/W]
Register Description
The CPU Speed register allows the processor to operate at a user selected speed. This register only affects the CPU, all other
peripheral timing is still based on the 48 MHz system clock (unless otherwise noted).
CPU Speed (Bits[3:0])
The CPU Speed field is a divisor that selects the operating speed of the processor as defined in Table 27.
Reserved
Write all reserved bits with ’0’.
Table 26. CPU Speed Register
Bit # 15 14 13 12 11 10 9 8
Field Reserved...
Read/Write - - - - - - - -
Default 0 0 0 0 0 0 0 0
Bit # 7 6 5 4 3 2 1 0
Field ...Reserved CPU Speed
Read/Write - - - - R/W R/W R/W R/W
Default 0 0 0 0 1 1 1 1
Table 27. CPU Speed Definition
CPU Speed [3:0] Processor Speed
0000 48 MHz/1
0001 48 MHz/2
0010 48 MHz/3
0011 48 MHz/4
0100 48 MHz/5
0101 48 MHz/6
0110 48 MHz/7
0111 48 MHz/8
1000 48 MHz/9
1001 48 MHz/10
1010 48 MHz/11
1011 48 MHz/12
1100 48 MHz/13
1101 48 MHz/14
1110 48 MHz/15
1111 48 MHz/16
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