LM3S1937-IBZ50 Luminary Micro, Inc, LM3S1937-IBZ50 Datasheet - Page 387
LM3S1937-IBZ50
Manufacturer Part Number
LM3S1937-IBZ50
Description
Lm3s1937 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S1937-IBZ50.pdf
(524 pages)
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15.4
Table 15-2. Inter-Integrated Circuit (I
July 25, 2008
I
I
2
2
Offset
C Master
0x00C
0x01C
C Slave
0x00C
0x000
0x004
0x008
0x010
0x014
0x018
0x020
0x000
0x004
0x008
Name
I2CMSA
I2CMCS
I2CMDR
I2CMTPR
I2CMIMR
I2CMRIS
I2CMMIS
I2CMICR
I2CMCR
I2CSOAR
I2CSCSR
I2CSDR
I2CSIMR
6.
7.
8.
9.
Register Map
Table 15-2 on page 387 lists the I
addresses for the master and slave:
■
■
I
I
2
2
TPR = (System Clock / (2 * (SCL_LP + SCL_HP) * SCL_CLK)) - 1;
TPR = (20MHz / (2 * (6 + 4) * 100000)) - 1;
TPR = 9
Write the I2CMTPR register with the value of 0x0000.0009.
Specify the slave address of the master and that the next operation will be a Send by writing
the I2CMSA register with a value of 0x0000.0076. This sets the slave address to 0x3B.
Place data (byte) to be sent in the data register by writing the I2CMDR register with the desired
data.
Initiate a single byte send of the data from Master to Slave by writing the I2CMCS register with
a value of 0x0000.0007 (STOP, START, RUN).
Wait until the transmission completes by polling the I2CMCS register’s BUSBSY bit until it has
been cleared.
C Master 0: 0x4002.0000
C Slave 0: 0x4002.0800
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
WO
RO
RO
RO
2
C) Interface Register Map
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0001
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
Reset
2
C registers. All addresses given are relative to the I
Preliminary
Description
I2C Master Slave Address
I2C Master Control/Status
I2C Master Data
I2C Master Timer Period
I2C Master Interrupt Mask
I2C Master Raw Interrupt Status
I2C Master Masked Interrupt Status
I2C Master Interrupt Clear
I2C Master Configuration
I2C Slave Own Address
I2C Slave Control/Status
I2C Slave Data
I2C Slave Interrupt Mask
LM3S1937 Microcontroller
2
C base
page
See
389
390
394
395
396
397
398
399
400
402
403
405
406
387
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