C8051F060-TB Silicon Laboratories Inc, C8051F060-TB Datasheet - Page 244
![BOARD PROTOTYPING W/C8051F060](/photos/28/94/289414/tqfp-100_sml.jpg)
C8051F060-TB
Manufacturer Part Number
C8051F060-TB
Description
BOARD PROTOTYPING W/C8051F060
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F060-TB
Contents
Board
Processor To Be Evaluated
C8051F06x
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F060
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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C8051F060/1/2/3/4/5/6/7
20.4.2. Clock Rate Register
244
Bits7-0:
R/W
Bit7
SMB0CR.[7:0]: SMBus0 Clock Rate Preset.
The SMB0CR Clock Rate register controls the frequency of the serial clock SCL in master
mode. The 8-bit word stored in the SMB0CR Register preloads a dedicated 8-bit timer. The
timer counts up, and when it rolls over to 0x00, the SCL logic state toggles.
The SMB0CR setting should be bounded by the following equation , where SMB0CR is the
unsigned 8-bit value in register SMB0CR, and SYSCLK is the system clock frequency in Hz:
The resulting SCL signal high and low times are given by the following equations:
Using the same value of SMB0CR from above, the Bus Free Timeout period is given in the
following equation:
R/W
Bit6
SMB0CR
Figure 20.9. SMB0CR: SMBus0 Clock Rate Register
T
R/W
T
Bit5
HIGH
BFT
T
LOW
288
10
258 SMB0CR
=
R/W
–
Bit4
0.85
---------------------------------------------------- -
256 SMB0CR
–
256 SMB0CR
–
–
SYSCLK
Rev. 1.2
SYSCLK
R/W
Bit3
SYSCLK
SYSCLK
R/W
Bit2
+
1.125 10
1
+
625ns
R/W
Bit1
6
SFR Address:
SFR Page:
R/W
Bit0
0xCF
0
Reset Value
00000000
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