W83627DHG Nuvoton Technology Corporation of America, W83627DHG Datasheet - Page 42

• Manufacturer Part Number: W83627DHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.2.2
This interface uses the I
programmable serial-bus address that is controlled by index 48h.
The two timing diagrams below illustrate how to use the I
how to read the value in an internal register, respectively.
(a) Serial bus write to internal address register followed by the data byte
(b) Serial bus read from a register
SCL
SDA
SCL
SDA
I
Start By
Master
2
Repeat
start
by
Master
C interface
Start By
Master
0
0
0
0
0
0
1
1
Serial Bus Address Byte
Serial Bus Address Byte
1
0
0
Serial Bus Address Byte
SCL
SDA (Continued)
Frame 3
2
Frame 1
0
C Serial Bus to access the internal registers. The W83627DHG has a
1
1
(Continued)
Frame 1
1
1
1
1
0
0
0
1
1
1
R/W
7
0
R/W
0
7
D7
627DHG
7
R/W
0
Ack
by
8
627DHG
Ack
627DHG
-30-
by
8
D6
Ack
by
8
0
D7
0
D7
D5
2
0
D7
D6
C interface to write to an internal register and
Data Byte
Frame 4
D6
D4
D6
D5
Internal Index Register Byte
Internal Index Register Byte
D5
Publication Release Date: Aug, 22, 2007
D5
D3
Data Byte
Frame 3
D4
Frame 2
Frame 2
D4
D4
D2
D3
D3
D2
D3
D1
D2
W83627DHG
D1
D2
7
D0
D1
7
D0
Ack
784R
627DHG
by
D1
8
Ack
by
7
D0
Master
Ack
by
8
7
D0
Stop
Master
by
627DHG
Ack
8
Stop by
Master
by
Version 1.4
627DHG
8
Ack
by