Table of Contents
Advertisement
5.8
Fast I2C
The microETXexpress®-SP integrates two configurable I2C buses. The external I2C provided via US15W GPIOs on COM
Express® Connector Pin B33/B34 and the JILI (LVDS) I2C from US15W SCH is available on COM Express® connector
pin A83/A84. See the
BIOS resource list
Stretching support. Fast I2C clock speed depends on the CPU performance and differs between ATOM™ Z510 and
ATOM™ Z530 modules. See the tables below for measured values on microETXexpress®-SP.
JIDA/external I2C speed
Setup
Extra high
Very high
High
Medium
Slow
Very slow
Ultra slow
JILI I2C speed
Setup
Extra high
Very high
High
Medium
Slow
Very slow
Ultra slow
52
for reserved addresses. The I2C interface offers full MultiMaster and Clock
ATOM™ Z510
not supported
150 kHz
80 kHz
40 kHz
11 kHz
1.5 kHz
0.8 kHz
ATOM™ Z510
not supported
90 kHz
36 kHz
18 kHz
2.8 kHz
1.0 kHz
not supported
microETXexpress®-SP / Special Features
ATOM™ Z530
not supported
210 kHz
110 kHz
60 kHz
16 kHz
2 kHz
1 kHz
ATOM™ Z530
not supported
125 kHz
50 kHz
25 kHz
4 kHz
1.3 kHz
not supported
Advertisement
Table of Contents
