C8051F410DK Silicon Laboratories Inc, C8051F410DK Datasheet - Page 191

KIT DEV FOR C8051F41X

C8051F410DK

Manufacturer Part Number
C8051F410DK
Description
KIT DEV FOR C8051F41X
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheets

Specifications of C8051F410DK

Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F41x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F410
Silicon Family Name
C8051F41x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051F41x
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1314

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F410DK
Manufacturer:
Silicon Labs
Quantity:
135
21. SMBus
The SMBus I/O interface is a two-wire, bi-directional serial bus. The SMBus is compliant with the System
Management Bus Specification, version 2, and compatible with the I2C serial bus. Reads and writes to the
interface by the system controller are byte oriented with the SMBus interface autonomously controlling the
serial transfer of the data. Data can be transferred at up to 1/20th of the system clock as a master or slave
(this can be faster than allowed by the SMBus specification, depending on the system clock used). A
method of extending the clock-low duration is available to accommodate devices with different speed
capabilities on the same bus.
The SMBus interface may operate as a master and/or slave, and may function on a bus with multiple mas-
ters. The SMBus provides control of SDA (serial data), SCL (serial clock) generation and synchronization,
arbitration logic, and START/STOP control and generation. Three SFRs are associated with the SMBus:
SMB0CF configures the SMBus; SMB0CN controls the status of the SMBus; and SMB0DAT is the data
register, used for both transmitting and receiving SMBus data and slave addresses.
M
A
S
E
R
T
Interrupt
Request
M
O
D
T
X
E
SMB0CN
S
T
A
O
S
T
Q
A
C
K
R
O
A
R
B
S
L
T
A
C
K
S
I
Arbitration
SCL Synchronization
SCL Generation (Master Mode)
SDA Control
IRQ Generation
SMBUS CONTROL LOGIC
E
N
S
M
B
N
H
Figure 21.1. SMBus Block Diagram
I
U
SMB0CF
B
S
Y
O
E
X
T
H
L
D
M
O
S
B
T
E
7
M
S
B
F
T
E
6
SMB0DAT
M
S
B
C
S
1
5
S
M
B
C
S
0
4
Data Path
3
Control
2
1
0
Rev. 1.1
00
01
10
11
Control
Control
SDA
SCL
T0 Overflow
T1 Overflow
TMR2H Overflow
TMR2L Overflow
FILTER
FILTER
C8051F410/1/2/3
N
N
SDA
SCL
C
R
O
S
S
B
A
R
Port I/O
191

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