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COMe-mSP1 / Features and Interfaces
4.5
Fast I2C & SMBus
The COMe-mSP1 integrates two configurable I2C buses. The external I2C provided via US15W GPIOs on COM Express®
Connector Pin B33/B34, the LVDS I2C from US15W SCH is available on COM express® connector pin A83/A84. The I2C
interface offers full MultiMaster and Clock Stretching support. Fast I2C and SMBus clock speed depends on the CPU
performance and differs between ATOM™ Z510 and ATOM™ Z530 modules. See the tables below for measured values on
COMe-mSP1 with BIOS NOW1R118.
JIDA/external I2C speed
JIDA/external I2C speed
JILI I2C speed
SMBus speed
Setup
ATOM™ Z510
ATOM™ Z530
ATOM™ Z510
ATOM™ Z530
ATOM™ Z510
ATOM™ Z530
Extra high
not supported
not supported
not supported
not supported
375 kHz
418 kHz
Very high
166 kHz
215 kHz
80 kHz
125 kHz
214 kHz
270 kHz
High
80 kHz
110 kHz
55 kHz
80 kHz
57 kHz
86 kHz
Medium
41 kHz
60 kHz
34 kHz
50 kHz
35 kHz
46 kHz
Slow
10 kHz
15 kHz
9.6 kHz
15 kHz
7.4 kHz
10 kHz
Very slow
1 kHz
2 kHz
1.5 kHz
2 kHz
0.7 kHz
1 kHz
Ultra slow
0.7 kHz
1 kHz
not supported
not supported
not supported
not supported
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Summary of Contents for 34001-1020-11-1
Page 1: ...COMe mSP1 Document Revision 160 www kontron com...
Page 2: ......
Page 17: ...COMe mSP1 Product Specification 3 3 Block Diagram 17...
Page 64: ...COMe mSP1 BIOS Operation 6 4 2 Module Info Module Component Steppings 64...
Page 65: ...COMe mSP1 BIOS Operation Module Software Revisions Memory Module Information 65...
Page 67: ...COMe mSP1 BIOS Operation 6 4 3 Advanced Menu 67...
Page 87: ...COMe mSP1 BIOS Operation 6 4 5 Boot 87...
Page 91: ...COMe mSP1 BIOS Operation 6 4 7 Advanced Chipset Settings 91...