STEVAL-ISQ002V1 STMicroelectronics, STEVAL-ISQ002V1 Datasheet - Page 30

• Manufacturer Part Number: STEVAL-ISQ002V1
• Description: BOARD EVAL BASED ON ST72264G1
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISQ002V1

• Main Purpose: Interface, PMBus
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ST72F264
• Primary Attributes: The PMBus™ Interface Using the ST7 I2C Peripheral
• Secondary Attributes: Firmware in C Language
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6423

Using the demonstration board
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6.1
6.1.1
6.1.2
6.1.3
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Using the demonstration board
After installing the setup as explained in
hyperterminal.
Figure 9.
If there is any problem in getting the message, press the switch provided in the
demonstration board. This switch re-starts the application.
Normal operation
The following sections explain how to initiate PMBus communication and how to read/ write
PMBus commands with hyperterminal.
Selection of communication speed
After the message appears as shown in
PMBus communication speed as 100 kHz or 400 kHz respectively. The default speed value
selected is 100 kHz.
If the user enters any other value other than 1 and 2, the previous speed value is retained.
Selection of packet error checking
After the message appears as shown in
PEC and disable PEC respectively. If PEC is enabled, all address, command code and data
communications are checked through CRC-8 check. The default PEC value is PEC
disabled.
If the user enters any other value other than 1 and 2, the previous speed value is retained.
Figure 10. PEC selection
Selection of slave address
The user should enter the slave address of the PMBus device. The slave address should be
in hexadecimal format. The slave addresses of different competitor’s module are given
below. Artesyn DPL20C module: 0x30 SiLabs Si8250-TB module : 0x80.
The slave address could change from one device to another device. The user must refer to
the product datasheet and development kit documents to decide on the slave address. An
example entry of slave address with Artesyn DPL20C module is shown below.
Hyperterminal message to show company name and selection of
communication speed
Doc ID 13286 Rev 2
Figure
Figure
Section
9, the user should enter 1 or 2 to select the
10, the user should enter 1 or 2 to enable
1, the following message appears in
AN2511