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26HS01GTAM03 Datasheet(PDF) 49 Page - Infineon Technologies AG |
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26HS01GTAM03 Datasheet(HTML) 49 Page - Infineon Technologies AG |
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49 / 166 page ![]() Datasheet 49 of 166 002-12337 Rev. *Y 2022-01-18 256Mb/512Mb/1Gb SEMPER™ Flash HYPERBUS™ interface, 1.8V/3.0V Features 4.6.2 Microcontroller initialization failure detection (x8 boot option) Upon detecting a failed microcontroller initialization, the flash device will stay in HYPERBUS™ interface and won't accept any transaction from the host controller. Also RSTO# will not transition from LOW to HIGH due to failed microcontroller initialization. 4.6.2.1 Host polling behavior The host will need to go through a Status Register polling sequence OR look for a RSTO# signal transitioning from LOW to HIGH to determine if an initialization failure has occurred in the device. The flowchart for the sequence is shown in Figure 33. Upon detecting Microcontroller Initialization Failure Detection, the device supports output impedance of 30. Figure 33 Host polling sequence for microcontroller initialization failure detection (x8 boot option) Power-Up Read Status Register 1 (HyperBus Interface) Status Register 1 = 0xFE80? Device Ready Yes No Hardware Reset Flash Microcontroller Initialization Failure Detected Power-Up Read Status Register 1 (HyperBus Interface) Status Register 1 = 0xFE80? Device Ready Yes No Hardware Reset Flash Microcontroller Initialization Failure Detected [20] |
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