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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AP32113 датащи(PDF) 30 Page - Infineon Technologies AG |
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AP32113 датащи(HTML) 30 Page - Infineon Technologies AG |
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30 / 38 page  AP32113 Connecting Memory to the TC1130 External Bus Unit (EBU) Application Note 30 V1.0, 2006-02 3.7 Register settings for various SDRAM Devices 3.7.1 Registers Independent of Device Type 3.7.1.1 EBUCON - EBU Configuration Register Table 7 EBUCON Register Settings 3.7.1.2 BUSCONx - EBU Bus Configuration Register Table 8 BUSCON Register Settings SDRMRE F REFRESHC Number of clock cycles between refresh operations Tref in device data sheet REFRESHR Number of refresh command Refer to device data sheet 1) The terms used in this column are based on the Intel PC SDRAM Specification, Revision 1.7 except T ref. Registers Setting Function EBU_CON 0x04F9 FF68 1:1 mode, clock gating on 0x00F9 FF681) 1) The option is fastest setting and verified on TC1130 Triboard 1:1 mode, clock gating off 0x05F9 FF68 1:2 mode, clock gating on 0x01F9 FF68 1:2 mode, clock gating off Registers Setting Function BUSCON 0x30700000 SDRAM Type 0 & 16 bit port width 0x30B00000 Prefetch Off, SDRAM Type 0 & 32 bit port width 0x40700000 SDRAM Type 1 & 16 bit port width 0x40B00000 SDRAM Type 1 & 32 bit port width 0x30B400001) 1) The option is fastest setting and verified on TC1130 Triboard Prefetch On, SDRAM Type 0 & 32 bit port width Table 6 The relationship between register definition and parameters Register Bit Field Function Description Corresponding to1) |
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