HMS91C7432 데이터 시트보기 (PDF) - Hynix Semiconductor

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HMS91C7432

HMS91C7432 features and functions

Hynix Semiconductor 

Hynix semiconductor

Specifications of HMS91C7432

Data format for communication between HMS91C7432 and the host MCU

Sync 1 Sync 2 Contro Length Data 0

0x7E 0xFE l code

Max 131 bytes for data

Data 130

Data Data Reserv Data 0

ID flag ed

Max 128 bytes for data Data

127

Figure 3. Data packet format

Field description :

Field

Sync 1

Sync 2

Control code

Length

Data fields

Data ID

Data Flag

Reserved

Data 0 ~ 127

Description

Value

Synconization for start of Command/Data packet. Always set to 0x7E

As above

Always set to 0xFE

This is the command code field in simple command In simple command

mode. Specify the “Type of command” in complex mode 0x80 ~ 0x89.

command mode.

In complex command

mode 0x00 ~ 0x06

Refer to table 3

Specify the length of the Data field.

0 ~ 131

Max. length of 131 octets for each packet containing Refer to the explaination

structures for complex command data; setup of the communication

parameters; reponse code and mail text contents in mode.

various communication mode accordingly.

Specify the types of data containing in the current 0x00 ~ 0x34

packet.

refer to the table 4

Specify whether the current packet is the last packet or 0x00 more packet follow

more packet follow.

0x01 last packet

Reserved for test purpose. Disregard this field in Not applicable

normal operation.

Contain max 128 octets of data

Single byte data

Table 2. Field descriptions for communication packet

10

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