參數(shù)資料
型號(hào): WLA49VVA
廠商: National Semiconductor Corporation
元件分類: ADC
英文描述: Audio Sub-System with Dual-Mode Stereo Headphone and Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose ADC
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代理商: WLA49VVA
12.0 Status & Control Registers (Continued)
12.39 SAR TRIGGER 1 CONFIGURATION REGISTER
This register is used to setup a voltage trigger on one of the SAR outputs.
TABLE 40. TRIG_1 (0x22h)
Bits
Field
Description
0
TRIG_1_ENB
Enables the 1st SAR trigger interrupt, if cleared will clear the IRQ.
1
TRIG_1_DIR
Selects the direction the voltage should be moving:
TRIG_1_DIR
Trigger if signal passes:
0
Above Threshold
1
Below Threshold
3:2
TRIG_1_SOURCE
Programs the channel used by the trigger.
TRIG_1_SOURCE
Source
00
2
VSAR_1
01
2
VSAR_2
10
2
D_V
DD/2 or BB_VDD
11
2
A_V
DD/2
7:4
TRIG_1_LSB
Sets bits 3:0 of the threshold used by the trigger.
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