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MEC1322 데이터시트(PDF) 306 Page - Microchip Technology

부품명 MEC1322
상세설명  Keyboard and Embedded Controller for Notebook PC
PDF  456 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MEC1322 데이터시트(HTML) 306 Page - Microchip Technology

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MEC1322
DS00001719D-page 306
 2014 - 2015 Microchip Technology Inc.
26.9.13
PWM DRIVER BASE FREQUENCY REGISTER
- The PWM Driver Base Register controls the base PWM frequency range.
26.9.14
FAN STATUS REGISTER
The bits in this register are routed to interrupts.
Offset
0Eh
Bits
Description
Type
Default
Reset
Event
15:3 TACH_READING[12:0]
The current tachometer reading value.
RES
1111111111
111b
VCC1_R
ESET
2:0 RESERVED
R/W
000b
-
Offset
10h
Bits
Description
Type
Default
Reset
Event
7:2 RESERVED
RES
000000b
-
1:0 PWM_BASE[1:0]
Determines the frequency range of the PWM fan driver (when
enabled) as shown in Table 26-18.
R/W
00b
VCC1_R
ESET
TABLE 26-18: PWM_BASE[1:0] DECODE
PWM_BASE[1:0]
PWM Frequency
10
0
0
26.83KHz
0
1
20.87kHz
1
0
4.82kHz
1
1
2.41KHz
Offset
11h
Bits
Description
Type
Default
Reset
Event
7:6 RESERVED
RES
00b
-
5 DRIVE_FAIL
The bit Indicates that the RPM-based Fan Speed Control Algorithm
cannot drive the Fan to the desired target setting at maximum drive.
• ‘0’ - The RPM-based Fan Speed Control Algorithm can drive
Fan to the desired target setting.
• ‘1’ - The RPM-based Fan Speed Control Algorithm cannot drive
Fan to the desired target setting at maximum drive.
R/WC
0b
VCC1_R
ESET
4:2 RESERVED
RES
000b
-



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