THMC50 Datasheet, PDF (8/32 Pages) Texas Instruments – REMOTE/LOCAL TEMPERATURE MONITOR AND FAN CONTROLLER WITH SMBus INTERFACE

THMC50
REMOTE/LOCAL TEMPERATURE MONITOR AND
FAN CONTROLLER WITH SMBus INTERFACE
SLIS090 – JULY 1999
PARAMETER MEASUREMENT INFORMATION
SMBus timing diagrams
SCLK
t(LOW)
tR
tF
t(HDSTA)
SDATA
P
t(HDSTA)
t(HDDAT)
t(HIGH) t(SUSTA)
t(SUDAT)
t(SUSTO)
t(BUF)
S
S
P
Start
t(LOWSEXT)
SCLKACK
t(LOWMEXT)
t(LOWMEXT)
Stop
SCLKACK
t(LOWMEXT)
SCLK
SDATA
Figure 1. SMBus Timing Diagram
1
9
1
9
SCLK
SDATA
A6
Start By
Master
A5 A4 A3 A2 A1 A0 R/W
D7
ACK By
THMC50
Frame 1 SMBus Slave Address Byte
1
SCLK
(Continued)
D6 D5 D4 D3 D2 D1 D0
ACK By
Master
Frame 2 Address Pointer Register Byte
9
SDATA
(Continued)
D7 D6 D5 D4 D3 D2 D1 D0
Frame 3 Data Byte
ACK By Stop By
THMC50 Master
Figure 2. SMBus Timing Diagram for Write Byte Format
8
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