SMSC LAN1198 Manual De Usuario
LAN9118 Family Programmer Reference Guide
Revision 1.0 (12-14-09)
34
SMSC AN 12.12
APPLICATION NOTE
6.6 The Overall Packet Transmit Process
Now that we’ve established a background for transmitting packets with the device, let’s look at the
diagram in
diagram in
depicting a packet transmit scheme. This example is
based upon the SMSC simple Linux driver, which provides driver calls to block and un-block the
transmit queue which calls into the driver:
transmit queue which calls into the driver:
Table 6.12 Multiple (3) Packet Data Transfer Sequence
HOST
SOURCE
ADDRESS
TX_DATA_FIFO
DATA
TRANSFER 1
HOST
SOURCE
ADDRESS
TX_DATA_FIFO
DATA
TRANSFER 2
HOST
SOURCE
ADDRESS
TX_DATA_FIFO
DATA
TRANSFER 3
TX_CMD_A-1
0x0003201d
TX_CMD_A-2
0x00000020
TX_CMD_A-3
0x00001011
TX_CMD_B-1
0x5678004e
TX_CMD_B-2
0x5678004e
TX_CMD_B-3
0x5678004e
0xb4002010
0x00XXXXXX
0xb4002030
0x5381aa76
0xb4002050
0x44202e4d
0xb4002014
0xdea0830e
0xb4002034
0x01e70496
0xb4002054
0x64697662
0xb4002018
0x0f8000ff
0xb4002038
0x384aa9bd
0xb4002058
0x4c654720
0xb400201c
0x08715571
0xb400203c
0x7cd60a0d
0xb400205c
0x6e616d62
0xb4002020
0x00004500
0xb4002040
0xff10506c
0xb4002060
0xYYYYYY21
0xb4002024
0x40561128
0xb4002044
0x0029f9ff
0xb4002028
0xf0068000
0xb4002048
0x726f6600
0xb400202c
0x5081aa6a
0xb400204c
0x43534d53