NCT6627UD Nuvoton Technology Corporation of America, NCT6627UD Datasheet - Page 39

• Manufacturer Part Number: NCT6627UD
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of NCT6627UD

• Lead Free Status / Rohs Status: Supplier Unconfirmed

The I
interface is totally compatible with the industry-standard I
also compatible to read the internal registers of the W83627UHG hardware monitor and control fan speeds. The
address of the I
at I/O address typically at 295h/296h).
The two timing diagrams below illustrate how to use the I
read the value in an internal register, respectively.
(a) Serial bus write to internal address register followed by the data byte
SCL
SDA
7.2.2 I
2
C interface is a second, parallel port into the internal registers of the hardware monitor function block. The
Start By
Master
2
C Interface
0
0
Figure 7-2 Serial Bus Write to Internal Address Register Followed by the Data Byte
2
C peripheral is set by the register located at index 48h (which is accessed by the index/data pair
1
Serial Bus Address Byte
0
SCL
SDA (Continued)
Frame 1
1
(Continued)
1
0
1
R/W
7
0
D7
627UHG
Ack
by
8
D6
0
D7
D5
2
C specification, allowing external components that are
2
C interface to write to an internal register and how to
D6
D4
-30-
Internal Index Register Byte
W83627UHG/NCT6627UD
D5
D3
Data Byte
Frame 3
Frame 2
D4
D2
Publication Release Date: October 26, 2010
D3
D1
D2
7
D0
Ack
784R
627UHG
by
D1
8
Ack
by
7
D0
Stop
Master
by
627UHG
8
Ack
by
Revision 1.7