SH3100IMTR SEMTECH [Semtech Corporation], SH3100IMTR Datasheet - Page 31

• Manufacturer Part Number: SH3100IMTR
• Description: Supervisory IC with I2C Interface and PWM
• Manufacturer: SEMTECH [Semtech Corporation]

© 2006 Semtech Corp.
POWER MANAGEMENT
Register Descriptions
Register Name Clk1Config
Address(hex): 21
CLK1Supply
Bit No.
Bit 7
[3:0]
[7]
[6]
[5]
[4]
Description
CLK1 supply
THIS REGISTER IS FUSE
INITIALIZED
CLK1 HF/LF
THIS REGISTER IS FUSE
INITIALIZED
InvertCLK1
THIS REGISTER IS FUSE
INITIALIZED
CLK1Enable
THIS REGISTER IS FUSE
INITIALIZED
CLK1 PostScaler
THIS REGISTER IS FUSE
INITIALIZED
CLK1 HF/LF
Bit 6
(continued)
Invert CLK1
Bit 5
Description
CLK1Enable
Bit Value
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Bit 4
0
1
0
1
0
1
0
1
31
(R/W) Sets up CLK1
Value Description
CLK1 pad is supplied by VDD, but automatically switches over to
VBAK during VBO
CLK1 pad is supplied only by VBAK
CLK0 is set to 32.768 kHz
CLK0 is derived from the Post-scaled HFDCO
CLK1 is in-phase with CLK0 if CLK1=CLK0 bit in the CLK0Config
register is set
CLK1 is in direct antiphase with CLK0 if CLK1=CLK0 bit is set
If the CLK1=CLK0 bit is not set, then this bit has little relevance
CLK1 output is disabled
CLK1 output is enabled
CLK1 frequency = HFDCO frequency
CLK1 frequency = HFDCO/2
CLK1 frequency = HFDCO/4
CLK1 frequency = HFDCO/8
CLK1 frequency = HFDCO/16
CLK1 frequency = HFDCO/32
CLK1 frequency = HFDCO/64
CLK1 frequency = HFDCO/128
CLK1 frequency = HFDCO/256
CLK1 frequency = HFDCO/512
CLK1 frequency = HFDCO/1024
CLK1 frequency = HFDCO/2048
CLK1 frequency = HFDCO/4096
CLK1 frequency = HFDCO/8192
CLK1 frequency = HFDCO/16384
CLK1 frequency = HFDCO/32768
This register is ignored if the CLK1 HF/LF bit is clear.
This register is fuse-initialized
Note that this register may not be changed if the
App-specificFuseWP bit in the WriteProtects register is set
Bit 3
Bit 2
CLK1 post-scaler
Default Value: 0000 0000
Reset Event: P, W
Bit 1
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SH3100
Bit 0