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MEC1632 Datasheet(PDF) 149 Page - Microchip Technology

Part # MEC1632
Description  Low Power 32-Bit Mobile Embedded Controller
PDF  636 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MEC1632 Datasheet(HTML) 149 Page - Microchip Technology

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 2012-2018 Microchip Technology Inc.
DS00001592B-page 149
MEC1632
7.9.2
CLOCK ENABLE REGISTER
7.9.2.1
Overview
The Clock Enable register controls the 32KHz oscillators.
EXT32K_VBAT
EXT32K_VBAT selects between a VTR powered, or VBAT powered external 32KHz clock input on the 32KHZ_IN pin:
0 - The external 32KHz clock input is VTR powered (default)
1 - The external 32KHz clock input is VBAT powered
32K_EN
The 32K_EN bit controls the 32.768 KHz Silicon Oscillator
0 - The internal 32KHz silicon oscillator is off (default)
Note 7-53
MCLK must not stop before 40
s min after the 32K_EN bit is asserted.
AD_EN
The Activity Detector bit AD_EN controls 32 KHz Clock Domain Switching as described in Table 7-9.
XTL32K_EN
The XTL32K_EN bit controls the 32.768 KHz Crystal Oscillator
0 - The 32KHz crystal oscillator is off (default)
1 - The 32KHz crystal oscillator is on
TABLE 7-60:
Clock Enable Register
HOST
ADDRESS
N/A
N/A HOST SIZE
EC OFFSET
04h
8-bit EC SIZE
POWER
VBAT
00h VBAT_POR DEFAULT
N/A nSYS_RST DEFAULT
BUS
EC SPB
BIT
D31
D30
D29
---
D10
D9
D8
HOST TYPE
–
–
–––
–
–
–
EC TYPE
RRR
R
R
R
RR
BIT NAME
Reserved
BIT
D7
D6
D5
D4
D3
D2
D1
D0
HOST TYPE
––
–––
––
–
EC TYPE
RR
R/W
R/W
R/W
R/W
R/W
R/W
BIT NAME
Reserved
XOSEL
XTL_SEL
XTL32K_
EN
AD_EN
32K_EN
EXT32K_V
BAT



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