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Struck Documentation
SIS8300-KU
MTCA.4 Digitizer
Page 53 of 92
7.5.23 RTM I2C interface register
#define SIS8300_RTM_I2C_BUS_REG 0x47
Rear Transition Modules (µRTMs) like the DWC8VM1 or DWC8300 have components that
are configured and/or read out by an I²C interface over the Zone 3 connector.
This register furnishes the interface for I²C read and write access.
It is implemented in firmware versions V2xxx.
A software example can be found on the Struck product DVD under:
sisdvd_xxxxxx\sis8xxx and DWC\sis8300L\software\tests\rtm_i2c_test
Please refer to the documentation of the respective RTM for details.
Bit
Write
read
31
unused
Write/Read Logic BUSY Flag
30
unused
0
29
unused
0
28
unused
0
27
unused
0
..
16
unused
0
15
unused
0
14
unused
0
13
Byte Read cycle
0
12
Byte Write cycle
0
11
Issue STOP condition
0
10
Issue REPEATSTART condition
0
9
Issue START condition
0
8
Master I²C ACK bit, written during reads
Device I²C ACK bit, read during writes
7
Write Data Bit 7 (MSB)
Read Data Bit 7 (MSB)
..
1
Write Data Bit 1
Read Data Bit 1
0
Write Data Bit 0 (LSB)
Read Data Bit 0 (LSB)
The power up default value is 0x0