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AS3435 Datasheet(PDF) 52 Page - ams AG |
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AS3435 Datasheet(HTML) 52 Page - ams AG |
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52 / 102 page  AS3415/AS3435 – 52 ams Datasheet, Confidential: 2014-Jun-13 [v1-30] De tail ed De sc rip t ion OTP Read/Write and Load Access With the OTP register architecture of the AS3415/35 it is important to know how to access the registers for reading and writing. Before an I²C read command can be sent there are two registers that have to be configured prior to the desired I²C read command. The flow chart in Figure 66 show the correct read access sequence. The first step is to configure the EVAL_REG_ON register. This register enables access to the OTP_MODE register. The OTP_MODE register defines whether you want to read or write to the OTP registers. By setting the OTP_MODE register ‘00’ we select OTP read access. Once the OTP_MODE register has been configured you can start reading from the OTP registers. Figure 66: OTP Read Access Flow Chart OTP Read Access Flow Chart: This flow chart shows how to successfully read from an OTP register via the I²C or production trimming interface. Set bit EVAL_REG_ON in register 0x20 Set OTP_MODE register to ‘00‘b Read from desired OTP register |
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