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GS3241 Datasheet(PDF) 74 Page - Semtech Corporation |
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GS3241 Datasheet(HTML) 74 Page - Semtech Corporation |
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74 / 108 page  GS3241 Final Data Sheet Rev.2 PDS-061444 September 2017 74 of 108 Semtech Proprietary & Confidential www.semtech.com GPIO Configuration 10 GPIO0_CFG RSVD 15:9 R/W 0 Reserved - do not modify. CFG_GPIO0_ OUTPUT_ENA 8R/W 1 GPIO0 buffer mode control. 0 = GPIO pin is configured as an input (tri-stated / high impedance). 1 = GPIO pin is configured as an output. CFG_GPIO0_FUNCTION 7:0 R/W 80 Function select for GPIO0 pin. GPIO0 output functions: 0x00 = Output driven LOW 0x01 = Output driven HIGH 0x02 = PLL lock status (HIGH — PLL locked) 0x03 to 0x7E= Reserved - do not use. 0x80 = LOS equivalent to inverse of STAT_SEC_CD (Default mode for GPIO0) 0x81 = carrier detect status (STAT_SEC_CD) 0x82 = Sleep mode status (HIGH — Device in sleep mode) 0x83 = HIGH for SD, LOW for all other rates. 0x84 = Rate detected [0] 0x85 = Rate detected [1] 0x86 = Rate detected [2] Note: To have full rate range using the GPIO rate detect function, one GPIO pin must be used for each Rate Detect bit [2:0]. Please see Table 4-2: Detected Data Rates for the indication values. 0x87 to 0xFF = Reserved - do not use. GPIO0 input functions: 0x00 to 0x7E = Reserved - do not use. 0x80 = Unused 0x81 = DDO0 disable control (HIGH — disable) 0x82 = DDO1 disable control (HIGH — disable) 0x83 = Reserved - do not modify. 0x84 = Cable equalizer bypass enable (HIGH — Bypass enabled) 0x85 = Retimer bypass enable (HIGH — Bypass enabled) 0x86 = Sleep control (HIGH — Sleep) 0x87 to 0xFF = Reserved - do not use. Table 5-3: Control Register Descriptions (Continued) Addressh Register Name Parameter Name Bit Slice R/W Reset Valueh Description |
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