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CY28439-2 Datasheet(PDF) 9 Page - SpectraLinear Inc |
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CY28439-2 Datasheet(HTML) 9 Page - SpectraLinear Inc |
9 / 21 page CY28439-2 Rev 1.0, November 21, 2006 Page 9 of 21 Byte 12: Control Register 12 Bit @Pup Name Description 7 0 CPU_DAF_N8 If Prog_CPU_EN is set, the values programmed is in CPU_FSEL_N[8:0] and CPU_FSEL_M[6:0] will be used to determine the CPU output frequency. The setting of FS_Override bit determines the frequency ratio for CPU and other output clocks. When it is cleared, the same frequency ratio stated in the Latched FS[E:A] register will be used. When it is set, the frequency ratio stated in the FSEL[3:0] register will be used. 6 0 CPU_DAF_M6 5 0 CPU_DAF_M5 4 0 CPU_DAF_M4 3 0 CPU_DAF_M3 2 0 CPU_DAF_M2 1 0 CPU_DAF_M1 0 0 CPU_DAF_M0 Byte 13: Control Register 13 Bit @Pup Name Description 7 0 SRC_N7 SRC Dial-A-Frequency Bit N7 6 0 SRC_N6 SRC Dial-A-Frequency Bit N6 5 0 SRC_N5 SRC Dial-A-Frequency Bit N5 4 0 SRC_N4 SRC Dial-A-Frequency Bit N4 3 0 SRC_N3 SRC Dial-A-Frequency Bit N3 2 0 SRC_N2 SRC Dial-A-Frequency Bit N2 1 0 SRC_N1 SRC Dial-A-Frequency Bit N1 0 0 SRC_N0 SRC Dial-A-Frequency Bit N0 Byte 14: Control Register 14 Bit @Pup Name Description 7 0 SRC_N8 SRC Dial-A-Frequency Bit N8 6 0 SW_RESET Software Reset. When set the device will assert a reset signal on SRESET# upon completion of the block/word/byte write that set it. After asserting and deasserting the SRESET# this bit will self clear (set to 0). The SRESET# pin must be enabled by latching SRESET#_EN on VTT_PRWGD# to utilize this feature. 5 0 FS_[E:A] FS_Override 0 = Select operating frequency by FS(E:A) input pins 1 = Select operating frequency by FSEL_(4:0) settings 4 0 SMSW_SEL Smooth switch select 0: Select CPU_PLL 1: Select SRC_PLL. 3 0 RESERVED RESERVED, Set = 0 2 0 RESERVED RESERVED, Set = 0 1 1 PCIF Free running 33-MHz Output Drive Strength 0 = 2x, 1 = 1x 0 0 Recovery_N8 Watchdog Recovery Bit Byte 15: Control Register 15 Bit @Pup Name Description 7 0 Recovery N7 Watchdog Recovery Bit 6 0 Recovery N6 Watchdog Recovery Bit 5 0 Recovery N5 Watchdog Recovery Bit 4 0 Recovery N4 Watchdog Recovery Bit 3 0 Recovery N3 Watchdog Recovery Bit |
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