Datasheet

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MT9D111__6_REV5.fm - Rev. B 2/06 EN
103 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
JPEG Indirect Registers
Micron Confidential and Proprietary
JPEG Indirect Registers
Special Function Registers - GPIO
Table 23: GPIO Registers
Register Name Bits Register Content/Function
Addr
(Hex) Default
GPIO_DATA_H 3:0
Shows the state of GPIO pads 11:8 and controls those configured as
outputs. Bit b (b = 0, ...,3) shows/controls the state of the pad
GPIO(b + 8). If certain GPIO pads are floating during STANDBY, the
corresponding bits should be tied to “0” converting the pads to
output to reduce standby current. See technical note TN0934
“Standby Sequence” for more details.
1070 N/A
GPIO_DATA_L 7:0
Shows the state of GPIO pads 7:0 and controls those configured as
outputs. Bit b (b = 0, ...,7) shows/controls the state of the pad
GPIO(b). If certain GPIO pads are floating during STANDBY, the
corresponding bits should be tied to “0” converting the pads to
output to reduce standby current. See technical note TN0934
“Standby Sequence” for more details.
1071 N/A
GPIO_OUTPUT_TOGGLE_H
1
3:0
Writing “1” to bit b (b = 0,...,3) toggles the GPIO(b + 8) output. 1072 0
GPIO_OUTPUT _TOGGLE_L 7:0
Writing “1” to bit b (b = 0,...,7) toggles the GPIO(b) output. 1073 0
GPIO_ OUTPUT _SET_H 3:0
Writing “1” to bit b sets the GPIO(b + 8) output HIGH. 1074 0
GPIO_ OUTPUT _SET_L 7:0
Writing “1” to bit b sets the GPIO(b) output HIGH. 1075 0
GPIO_ OUTPUT _CLEAR_H 3:0
Writing “1” to bit b sets the GPIO(b+8) output LOW. 1076 0
GPIO_ OUTPUT _CLEAR_L 7:0
Writing “1” to bit b sets the GPIO(b) output LOW. 1077 0
GPIO_DIR_H 3:0
Controls the direction of GPIO pads 11:8. If bit b (b = 0,...,3) is set to
“1,” the pad GPIO(b + 8) is an input; otherwise it is an output. Upon
power-up or reset all GPIO pads become inputs. If certain GPIO
pads are floating during STANDBY, the corresponding bits should
be tied to “0” converting the pads to output to reduce standby
current. See technical note TN0934 “Standby Sequence” for more
details.
1078 0x0F
GPIO_DIR_L 7:0
Controls the direction of GPIO pads 7:0. If bit b (b = 0,...,7) is set to
“1,” the pad GPIO(b) is an input; otherwise it is an output. Upon
power-up or reset all GPIO pads become inputs. If certain GPIO
pads are floating during STANDBY, the corresponding bits should
be tied to “0” converting the pads to output to reduce standby
current. See technical note TN0934 “Standby Sequence” for more
details.
1079 0xFF
GPIO_DIR_REVERSE_H 3:0
Writing “1” to bit b (b = 0,..,3) reverses the direction of GPIO(b + 8). 107A 0
GPIO_DIR_REVERSE_L 7:0
Writing “1” to bit b (b = 0,...,7) reverses the direction of GPIO(b). 107B 0
GPIO_DIR_IN_H 3:0
Writing “1” to bit b configures the pad GPIO(b + 8) as an input. 107C 0
GPIO_DIR_IN_L 7:0
Writing “1” to bit b configures the pad GPIO(b) as an input. 107D 0
GPIO_DIR_OUT_H 3:0
Writing “1” to bit b configures the pad GPIO(b + 8) as an output. 107E 0
GPIO_DIR_OUT_L 7:0
Writing “1” to bit b configures the pad GPIO(b) as an output. 107F 0
GPIO_WG_T01 7:0
First subperiod
2
of waveform output at GPIO1 (in 8-bit counter
mode) or bits 15:8 of first subperiod of waveform output at GPIO0
(in 16-bit counter mode).
1080 0
GPIO_WG_T00 7:0
First subperiod of waveform generated at GPIO0 (in 8-bit counter
mode) or bits 7:0 of the same (in 16-bit counter mode).
1081 0