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AS3956 Datasheet(PDF) 64 Page - ams AG |
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AS3956 Datasheet(HTML) 64 Page - ams AG |
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64 / 109 page  Page 64 ams Datasheet Document Feedback [v1-10] 2018-Apr-27 AS3956 − Detailed Description EEPROM Read In order to read data from EEPROM, first a mode byte is sent, followed by the block address byte (MSB first). Then one or more blocks of data with address auto-incrementing (packets of 4 bytes) are transferred to MISO output, also MSB first. MOSI is sampled at the SCLK falling edge; data to be read from AS3956 EEPROM is driven to MISO pin on SCLK rising edge and is sampled by the master at the SCLK falling edge. In case the block on the defined address does not exist, all 0 data is sent to MISO. Please note that SCLK frequency should not exceed 1MHz during EEPROM Read (limited by EEPROM read access time). Figure 62: Reading an EEPROM Block over SPI 01 1 1 1 1 1 1 W A 4 W A 3 W A 2 W A 1 W A 0 x W A 6 W A 5 X MSB Byte from Address <WA6-WA0> /SS SCLK MOSI X B 2 9 B 2 8 B 2 7 B 2 6 B 2 5 B 2 4 B 3 1 B 3 0 B 2 3 B 2 2 B 5 B 4 B 3 B 2 B 1 B 0 B 7 B 6 B 9 B 8 XX LSB Byte from Address <WA6-WA0> X MISO 1µs min |
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