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Clear Read Response
Clear Read Response in raw hex:
0000000801F1010600090A
Clear Read Response separated by field:
00 00 00 08 01 F1 01 06 00 09 0A
[ sync ] [len] [srce] [dest] [type] [resp] [cmd] [stat] [ data ] [cksm]
00 00 00 (Sync)
3 bytes - Static 3 bytes (0x000000) at the start of every packet.
08 (Length)
1 byte - Length of the packet in bytes starting from the Length Field to the Check Sum Field (excludes the
Sync Field). This packet is 8 bytes in length excluding the Sync Field, or 0x08.
01 (Source)
1 byte - Address of the device the packet originated from. This packet is a response to the host device
from the SIO-7300. The SIO-7300 has a static address of 0x01.
F1 (Destination)
1 byte - Address of the device the packet is being sent to. The host device’s address is static, 0xF1.
This packet is being sent from the SIO-7300 to the host device.
01 (Type)
1 byte - This field is set based on which device generated the message. The host device did not generate
this message so the Type Field is set to 0x01.
06 (Response)
1 byte - The Response Field is always a constant value of 0x06.
00 (Command)
1 byte - The Command Field is always a constant value of 0x00.
09 (Status)
1 byte - The Status Field shows the command/response codes. 0x09 is the Clear Read response. This
response is always sent after the SIO-7300 receives the Clear Read command.
(Data)
0 bytes - The Clear Read response has an empty Data Field.
0A (Checksum)
1 byte - The sum of all data in the packet before the Checksum Field, modulo 0x100 (masked to one
byte). The checksum for this packet is 0x0A.
Cypress SIO-7300 - Example Packets
(cont.)