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GMS30004 Datasheet(PDF) 25 Page - Hynix Semiconductor |
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GMS30004 Datasheet(HTML) 25 Page - Hynix Semiconductor |
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25 / 158 page  2 - 6 Clock Generator The GMS300 series has an internal clock oscillator. The oscillator circuit is designed to operate with an external ceramic resonator. Internal capacitors are available as a masked option. Oscillator circuit is able to organize by connecting ceramic resonator to outside. (In order to built in capacitor for oscillation as masked option.) * It is necessary to connect capacitor to outside in order to change ceramic resonator, You must examine refer to a manufacturer`s Pulse generator The following frequency and duty ratio are selected for carrier signal outputted from the REMOUT port depending on a PMR (Pulse Mode Register) value set in a program. T T1 REMOUT signal T=1/f PUL = 12/fOSC, T1/T = 1/2 0 1 PMR 2 3 4 5 T=1/f PUL = 12/fOSC, T1/T = 1/3 T=1/f PUL = 8/fOSC, T1/T = 1/2 T=1/f PUL = 8/fOSC, T1/T = 1/4 T=1/f PUL = 11/fOSC, T1/T = 4/11 No Pulse (same to D0~D9) * Default value is Ì0Ì Table 2-2 PMR selection table Chapter 2. Architecture 22 23 OSC2 OSC1 |
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