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ST10F280 数据表(PDF) 101 Page - STMicroelectronics |
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ST10F280 数据表(HTML) 101 Page - STMicroelectronics |
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101 / 186 page  ST10F280 101/186 12.11 - XPort 9 The XPort9 is enabled by setting XPEN bit 2 of the SYSCON register and XPORT9EN bit 3 of the new XPERCON register. On the XBUS interface, the register are not bit-addressable This 16-bit port is used for general purpose I/O, the direction of each line can be configured via the corre- sponding direction register XDP9. Each port line can be switched into push/pull or open drain mode via the open drain control register XODP9. All port lines can be individually (bit-wise) programmed. The “bit-addressable” feature is available via spe- cific “Set” and “Clear” registers: XP9SET, XP9CLR, XDP9SET, XDP9CLR, XODP9SET, XODP9CLR. XP9 (C100h) Reset Value: 0000h XP9SET (C102h) Reset Value: 0000h XP9CLR (C104h) Reset Value: 0000h XDP9 (C200h) Reset Value: 0000h 15 14 13 12 11 10 987654321 0 XP9.15 XP9.14 XP9.13 XP9.12 XP9.11 XP9.10 XP9.9 XP9.8 XP9.7 XP9.6 XP9.5 XP9.4 XP9.3 XP9.2 XP9.1 XP9.0 RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Bit Function XP9.y Port data register XP9 bit y 15 14 13 12 11 10 98 7654 3210 XP9SET .15 XP9SET .14 XP9SET .13 XP9SET .12 XP9SET .11 XP9SET .10 XP9SET .9 XP9SET .8 XP9SET .7 XP9SET .6 XP9SET .5 XP9SET .4 XP9SET .3 XP9SET .2 XP9SET .1 XP9SET .0 WWWW WWWW WWWW WWWW Bit Function XP9SET.y Writing a ‘1’ will set the corresponding bit in XP9 register, Writing a ‘0’ has no effect. 15 14 13 12 11 10 98 7654 3210 XP9CLR .15 XP9CLR .14 XP9CLR .13 XP9CLR .12 XP9CLR .11 XP9CLR .10 XP9CLR .9 XP9CLR .8 XP9CLR .7 XP9CLR .6 XP9CLR .5 XP9CLR .4 XP9CLR .3 XP9CLR .2 XP9CLR .1 XP9CLR .0 WWWW WWWW WWWW WWWW Bit Function XP9CLR.y Writing a ‘1’ will clear the corresponding bit in XP9 register, Writing a ‘0’ has no effect. 15 14 13 12 11 10 98 7654 3210 XDP9 .15 XDP9 .14 XDP9 .13 XDP9 .12 XDP9 .11 XDP9 .10 XDP9 .9 XDP9 .8 XDP9 .7 XDP9 .6 XDP9 .5 XDP9 .4 XDP9 .3 XDP9 .2 XDP9 .1 XDP9 .0 RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW Bit Function XDP9.y Port direction register XDP9 bit y XDP9.y = 0: Port line XP9.y is an input (high-impedance) XDP9.y = 1: Port lineX P9.y is an output |
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