LAN91C111-NU Standard Microsystems (SMSC), LAN91C111-NU Datasheet - Page 90

• Manufacturer Part Number: LAN91C111-NU
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN91C111-NU

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.465V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

Revision 1.91 (06-01-09)
1. Save the Packet Number Register
2. Read the EPH Status Register
3. Acknowledge TX Interrupt
4. Check for Status of Transmission
5. Restore the Packet Number Register
Saved_PNR = Read Byte (Bank 2, Offset 2)
Temp = Read (Bank 0, Offset 2)
Write Byte (0x02, (Bank 2, Offset C));
If ( Temp AND 0x0001)
{
}
else
{
}
Write Byte (Saved_PNR, (Bank 2, Offset 2))
TX Interrupt With AUTO_RELEASE = FALSE
//If Successful Transmission
Step 4.1.1: Issue MMU Release (Release Specific Packet)
Step 4.1.2: Return from the routine
//Transmission has FAILED
// Now we can either release or re-enqueue the packet
Step 4.2.1: Get the packet to release/re-enqueue, stored in FIFO
Step 4.2.2: Write to the PNR
Step 4.2.3
Step 4.2.4: Re-Enable Transmission
Step 4.2.5: Return from the routine
Write (0x00A0, (Bank2, Offset 0));
Temp = Read (Bank 2, Offset 4)
Temp = Temp & 0x003F
Write (Temp, (Bank2, Offset 2))
// Option 1: Release the packet
//Option 2: Re-Enqueue the packet
Temp = Read(Bank0, Offset 0);
Temp = Temp2 OR 0x0001
Write (Temp2, (Bank 0, Offset 0));
Figure 10.3 TX INTR
DATASHEET
Write (0x00A0, (Bank2, Offset 0));
Write (0x00C0, (Bank2, Offset 0));
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10/100 Non-PCI Ethernet Single Chip MAC + PHY
SMSC LAN91C111 REV C
Datasheet