參數(shù)資料
型號(hào): LP3971SQX-A514
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS
中文描述: 3-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC40
封裝: 5 X 5 MM, LLP-40
文件頁(yè)數(shù): 21/42頁(yè)
文件大小: 1350K
代理商: LP3971SQX-A514
I
2
C Register Definitions
(Continued)
SYSTEM CONTROL REGISTER (SCR2) 8h’0E
Bit
7
6
5
4
3
2
1
0
Designation
BBCS
SEB2
BPTR
WUP3_
sense
1
GPIO2
GPIO1
Reset Value
1
0
0
0
0
0
0
SYSTEM CONTROL REGISTER (SCR2) 8h’0E DEFINITIONS
Bit
7
Access
R/W
Name
BBCS
Description
Sets GPIO1 as control input for Back Up battery charger
0 = Back Up battery Charger GPIO Disabled
1 = Back Up battery Charger GPIO Pin Enabled
PWR_EN soft Low voltage Supply Enabled OR’ed with PWR_EN Pin
0 = Low voltage Supply Output Enabled
1 = Low voltage Supply Output Disabled
Bypass RTC_LDO Output Voltage to LDO1 Output Voltage Tracking
0 = Disabled RTC_LDO1 Tracking enabled
1 = Enabled RTC-LDO1 Tracking disabled
Spare Wakeup control input
0 = Active High
1 = Active Low
Configure direction and output sense of GPIO2 Pin
Data Code
GPIO2
2h’00
Hi-Z
2h’01
Output Low
2h’02
Input
2h’03
Output high
Configure direction and output sense of GPIO1 Pin
Data Code
GPIO1
2h’00
Hi-Z
2h’01
Output Low
2h’02
Input
2h’03
Output high
6
R/W
SEB2
5
R/W
BPTR
4
R/W
WUP3_
sense
3:2
R/W
GPIO2
1:0
R/W
GPIO1
L
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LP3971SQX-D510/NOPB 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel