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ZAMC4100GA2R Datasheet(PDF) 125 Page - Renesas Technology Corp |
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ZAMC4100GA2R Datasheet(HTML) 125 Page - Renesas Technology Corp |
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125 / 156 page ![]() ZAMC4100 Datasheet © 2016 Integrated Device Technology, Inc. 125 January 26, 2016 SYS_RSTSTAT ADD: 0x4000_000C Bit NAME Ext. Access Int. Access Reset Value Description 7 ENLOCKUP R R 0 This bit reflects whether a lockup from the ARM® core is allowed to reset the system (set to 1) or not (set to 0). 7 : 0 SETENLOCKUP W --- 0 To enable the lockup reset, 0xC9 must be written to bits 7:0. It can be disabled by writing another value. This bit is reset by all four reset sources (extRst, sysRstReq, lockupRst, jtagRst). 15:8 --- R --- 0 Unused; always read as 0. 23 : 16 JTAGRSTREQ W R 0 To generate a reset via the JTAG interface, 0x3A must be written to bits 23:16. These bits cannot be written by the ARM® core. 31 : 24 --- R --- 0 Unused; always read as 0. 4.10.2. GPIO Registers The GPIO registers are mapped into the system address space between 0x4000_1400 and 0x4000_17FF. Unused addresses must not be accessed. Table 4.9 Register [0x4000_1400] GPIO_DIR GPIO_DIR ADD: 0x4000_1400 Bit Name Ext. Access Int. Access Reset Value Description 7 : 0 GPIODIR R / W R 0 1: GPIO pin is switched as output direction. 0: GPIO pin is switched as input direction. 15 : 8 --- N/A N/A 0 Reserved. 31 : 16 --- R --- 0 Unused; always read as 0. Table 4.10 Register [0x4000_1404] GPIO_IN GPIO_IN ADD:0x4000_1404 Bit Name Ext. Access Int. Access Reset Value Description 7 : 0 GPIOIN R R / W 0 Synchronized input value. 15 : 8 --- N/A N/A 0 Reserved. 31 : 8 --- R --- 0 Unused; always read as 0. |
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