參數(shù)資料
型號: EVAL-AD7877EB
廠商: Analog Devices, Inc.
英文描述: Touch Screen Controller
中文描述: 觸摸屏控制器
文件頁數(shù): 34/44頁
文件大小: 1002K
代理商: EVAL-AD7877EB
AD7877
Table 15. Read Register Map
Rev. A | Page 34 of 44
Register Address
Binary
RADD2
0
0
0
0
Register Name
None
Control Register 1
Control Register 2
Alert Status/Enable
Register
AUX1 High Limit
AUX1 Low Limit
BAT1 High Limit
BAT1 Low Limit
BAT2 High Limit
BAT2 Low Limit
TEMP1 Low Limit
TEMP1 High Limit
Sequencer Register 0
Sequencer Register 1
DAC Register
None
X+
Y+
Y (Z2)
Description
Reads back all zeros.
See Table 13.
See Table 13.
See Table 13.
HEX
00
01
02
03
RADD4
0
0
0
0
RADD3
0
0
0
0
RADD1
0
0
1
1
RADD0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
See Table 13.
See Table 13.
See Table 13.
See Table 13.
See Table 13.
See Table 13.
See Table 13.
See Table 13.
See Table 13.
See Table 13.
See Table 13.
Factory use only.
Measurement at X+ input for Y position.
Measurement at Y+ input for X position.
Measurement at Y input for touch-pressure
calculation Z2.
Auxiliary Input 1 measurement.
Auxiliary Input 2 measurement.
Auxiliary Input 3 measurement.
Battery Input 1 measurement.
Battery Input 1 measurement.
Single-ended temperature measurement.
Differential temperature measurement.
Measurement at X+ input for touch-pressure
calculation Z1.
See Table 13.
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
0
1
1
1
1
0
0
0
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
13
14
15
16
17
18
19
1A
AUX1
AUX2
AUX3
BAT1
BAT2
TEMP1
TEMP2
X+ (Z1)
1
1
0
1
1
1B
GPIO Control
Register 1
GPIO Control
Register 2
GPIO Data Register
None
None
1
1
1
0
0
1C
See Table 13.
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
1D
1E
1F
See Table 13.
Factory use only.
Factory use only.
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