LAN91C100FD-ST SMSC, LAN91C100FD-ST Datasheet - Page 44

• Manufacturer Part Number: LAN91C100FD-ST
• Description: Ethernet ICs Non-PCI 10/100 Ethernet MAC
• Manufacturer: SMSC
• Type: Single Chip MAC and PHY Controllerr

Specifications of LAN91C100FD-ST

• Ethernet Connection Type: 10 Base-T, 100 Base-TX
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Product: Ethernet Controllers
• Number Of Transceivers: 1
• Standard Supported: 802.3
• Data Rate: 10 MB, 100 MB
• Supply Voltage (max): 7 V
• Supply Voltage (min): 0.3 V
• Supply Current (max): 40 mA
• Maximum Operating Temperature: + 70 C
• Package / Case: TQFP-208
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FEAST Fast Ethernet Controller with Full Duplex Capability
ISR
Save Bank Select & Address
Ptr Registers
Mask SMC91C100FD
Interrupts
Read Interrupt Register
No
Yes
RX INTR?
Yes
TX INTR?
Call TX INTR or TXEMPTY
INTR
No
Call RXINTR
Get Next TX
ALLOC INTR?
Packet
No
Yes
Available for
Transmission?
Yes
No
Write Allocated Pkt # into
Packet Number Reg.
Call ALLOCATE
Write Ad Ptr Reg. & Copy Data
& Source Address
Enqueue Packet
EPH INTR?
Yes
No
Set "Ready for Packet" Flag
Restore Address Pointer &
Call EPH INTR
Bank Select Registers
Return Buffers to Upper Layer
Unmask SMC91C100FD
Interrupts
Disable Allocation Interrupt
Mask
Exit ISR
Figure 5.3 - Interrupt Service Routine
Revision 1.0 (09-22-08)
Page 44
SMSC LAN91C100FD Rev. D
DATASHEET