LM3S1651_15 Datasheet, PDF (743/1035 Pages) Texas Instruments – Stellaris LM3S1651 Microcontroller

Stellaris^® LM3S1651 Microcontroller
Register 4: I²C Master Timer Period (I2CMTPR), offset 0x00C
This register specifies the period of the SCL clock.
I2C Master Timer Period (I2CMTPR)
I2C 0 base: 0x4002.0000
I2C 1 base: 0x4002.1000
Offset 0x00C
Type R/W, reset 0x0000.0001
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
TPR
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Bit/Field
31:7
6:0
Name
reserved
TPR
Type
RO
R/W
Reset Description
0x0000.00 Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0x1
SCL Clock Period
This field specifies the period of the SCL clock.
SCL_PRD = 2×(1 + TPR)×(SCL_LP + SCL_HP)×CLK_PRD
where:
SCL_PRD is the SCL line period (I²C clock).
TPR is the Timer Period register value (range of 1 to 127).
SCL_LP is the SCL Low period (fixed at 6).
SCL_HP is the SCL High period (fixed at 4).
CLK_PRD is the system clock period in ns.
July 03, 2014
743
Texas Instruments-Production Data