NUMICRO-SDK Nuvoton Technology Corporation of America, NUMICRO-SDK Datasheet - Page 271

• Manufacturer Part Number: NUMICRO-SDK
• Description: KIT EVAUATION NUC100/120/130/140
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™r
• Type: MCUr

Specifications of NUMICRO-SDK

• Contents: Board, Cable, CD, Nu-Link
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: NUC100, NUC120, NUC130, NUC140

I
Register
I2CSTATUS
Bits
[31:8]
[7:0]
2
C Status Register (I2CSTATUS )
31
23
15
7
NuMicro™ NUC100 Series Technical Reference Manual
Offset
I2C_BA+0x0C
Descriptions
Reserved
I2CSTATUS
30
22
14
6
I2CSTATUS[7:3]
R/W
R/W
Reserved
I
The status register of I
The three least significant bits are always 0. The five most significant bits contain the
status code. There are 26 possible status codes. When I2CSTATUS contains F8H, no
serial interrupt is requested. All other I2CSTATUS values correspond to defined I
states. When each of these states is entered, a status interrupt is requested (SI = 1). A
valid status code is present in I2CSTATUS one cycle after SI is set by hardware and is
still present one cycle after SI has been reset by software. In addition, states 00H
stands for a Bus Error. A Bus Error occurs when a START or STOP condition is
present at an illegal position in the formation frame. Example of illegal position are
during the serial transfer of an address byte, a data byte or an acknowledge bit.
2
C Status Register
29
21
13
5
Description
I
2
C Status Register
28
20
12
4
- 271 -
Reserved
Reserved
Reserved
2
C:
27
19
11
3
Publication Release Date: Oct 22, 2010
26
18
10
2
0
25
17
9
1
0
Revision V1.06
Reset Value
0x0000_0000
24
16
8
0
0
2
C