VCU110 Evaluation Board
87
UG1073 (v1.2) March 26, 2016
Chapter 1:
VCU110 Evaluation Board Features
A zoomed in view of the I2C bus switches is shown in
.
User applications that communicate with devices on one of the downstream I2C buses must
first set up a path to the desired bus through the U28 or U80 bus switch at I2C address
0x74
(
0b1110100
) or
0x75
(
0b1110101
) respectively.
lists the address for each
bus.
X-Ref Target - Figure 1-17
Figure 1-17:
I2C Bus IIC_MAIN Bus Switches
)3*$
%DQN
9
8
8
9
WR
Y
/6
99
8
9
WR
Y
/6
99
8
6\VWHP&RQWUROOHU
=\QT
$36R&
%DQN
9
7&$
&WR
%XV6ZLWFK
8
8
3&$
&WR
%XV6ZLWFK
&+86(5B6,B&/2&.B6'$6&/
[
&+3257B(;3$1'(5B,,&B6'$6&/
[
&+,/.1B(;$0$;B6,B6'$6&/
[
&+&)3B6,B6'$6&/
[
&++0&B6,B6'$6&/
[$
&+,,&B6'$6&/B+'0,
[
&+6<6021B6'$6&/
[
&+12786('
&+30%86B6'$6&/
;[[[
&+)0&B+3&B,,&B6'$6&/
[[[
&+)0&B+3&B,,&B6'$6&/
[[[
&+,,&B((3520B6'$6&/
[
,,&B6'$6&/B0$,1B/6
,,&B6'$6&/B0$,1
6<6&7/5B,&B6'$6&/
[
[
;
Table 1-47:
I2C Devices
I2C Device
I2C Switch
Position
I2C Address
Device
Binary Format
Hex Format
TCA9548 8-channel bus switch
NA
0b1110100
0x74
U28 PCA9548
Si570 clock
0
0b1011101
0x5D
U32 SI570
I2C Port expander
1
0b0100001
0x21
U89 TCA6416
Ilkn. ExaMax Si5328 clock
2
0b1010000
0x50
U181 SI5328C
CFP4 Si5328 clock
3
0b1101001 0x69
U179 SI5328C