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AD6674 bảng dữ liệu(PDF) 77 Page - Analog Devices |
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AD6674 bảng dữ liệu(HTML) 77 Page - Analog Devices |
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77 / 91 page  Data Sheet AD6674 MEMORY MAP REGISTER TABLE All address and bit locations that are not included in Table 45 are not currently supported for this device. Table 45. Memory Map Registers Reg. Addr. (Hex) Register Name Bit 7 (MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (LSB) Default Notes Analog Devices SPI Registers 0x000 INTERFACE_ CONFIG_A Soft reset (self clearing) LSB first 0 = MSB 1 = LSB Address ascension 0 0 Address ascension LSB first 0 = MSB 1 = LSB Soft reset (self clearing) 0x00 0x001 INTERFACE_ CONFIG_B Single instruc- tion 0 0 0 0 0 Datapath soft reset (self clearing) 0 0x00 0x002 DEVICE_ CONFIG (local) 0 0 0 0 0 0 00 = normal operation 10 = standby 11 = power-down 0x00 0x003 CHIP_TYPE 011 = high speed ADC 0x03 Read only 0x004 CHIP_ID (low byte) 1 1 0 0 1 1 1 1 0xCF 0 0x005 CHIP_ID (high byte) 0 0 0 0 0 0 0 0 0x00 0 0x006 CHIP_ GRADE Chip speed grade 1010 = 1000 MSPS 0111 = 750 MSPS 0101 = 500 MSPS 0 X X X X Read only 0x008 Device index 0 0 0 0 0 0 Channel B Channel A 0x03 0x00A Scratch pad 0 0 0 0 0 0 0 0 0x00 0x00B SPI revision 0 0 0 0 0 0 0 1 0x01 0x00C Vendor ID (low byte) 0 1 0 1 0 1 1 0 0x56 Read only 0x00D Vendor ID (high byte) 0 0 0 0 0 1 0 0 0x04 Read only Analog Input Buffer Control Registers 0x015 Analog Input (local) 0 0 0 0 0 0 0 Input disable 0 = normal operation 1 = input disabled 0x00 0x016 Input termination (local) Analog input differential termination 0000 = 400 Ω 0001 = 200 Ω 0010 = 100 Ω 0110 = 50 Ω 1 1 1 0 0x0C; 0x0E for AD6674 -1000 and AD6674 -750 0x934 Input capacitance 0 0 0 0x1F = 3 pF to GND (default) 0x00 = 1.5 pF to GND 0x1F 0x018 Buffer Control 1 (local) 0000 = 1.0× buffer current 0001 = 1.5× buffer current 0010 = 2.0× buffer current (default for AD6674-500) 0011 = 2.5× buffer current 0100 = 3.0× buffer current (default for AD6674-750 and AD6674-1000) 0101 = 3.5× buffer current … 1111 = 8.5× buffer current 0 0 0 0 0x40; 0x20 for AD6674 -500 Rev. B | Page 77 of 91 |
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