AN625
Rev. 0.1
27
3.2.8. FIFO_INFO
Summary: Provides access to transmit and receive fifo counts and reset.
Purpose:
This command is normally used for error recovery, fifo hardware does not need to be reset prior to use.
Command Stream:
Reply Stream
Parameters:
RX
1 = Resets receive data fifo.
TX
1 = Resets transmit data fifo.
Response:
RX_FIFO_COUNT[7:0]
TX_FIFO_SPACE[7:0] - Amount of space currently available in transmit fifo.
3.2.9. GET_PACKET_INFO
Summary:
Returns information about the last packet received.
Purpose:
This command is used to retrieve the length field extracted from the packet when using variable length packets.
Command Stream
Reply Stream
Parameters:
None
Response:
LENGTH_15_8[7:0] - Most significant byte of the extracted length
LENGTH_7_0[7:0] - Least significant byte of the extracted length
FIFO_INFO Command
7
6
5
4
3
2
1
0
CMD
0x15
FIFO
000000
RX
TX
FIFO_INFO Reply
7
6
5
4
3
2
1
0
CMD_COMPLETE
CTS[7:0]
RX_FIFO_COUNT
RX_FIFO_COUNT[7:0]
TX_FIFO_SPACE
TX_FIFO_SPACE[7:0]
GET_PACKET_INFO Command
7
6
5
4
3
2
1
0
CMD
0x16
GET_PACKET_INFO Reply
7
6
5
4
3
2
1
0
CMD_COMPLETE
CTS[7:0]
LENGTH_15_8
LENGTH_15_8[7:0]
LENGTH_7_0
LENGTH_7_0[7:0]
Summary of Contents for Si446 Series
Page 111: ...AN625 Rev 0 1 111 NOTES ...
