LAN91C110-PU SMSC, LAN91C110-PU Datasheet - Page 29

• Manufacturer Part Number: LAN91C110-PU
• Description: Ethernet ICs Non-PCI 10/100 Ethernet MAC
• Manufacturer: SMSC
• Type: Single Chip MAC and PHY Controllerr

Specifications of LAN91C110-PU

• 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): 5 V
• Supply Voltage (min): 0 V
• Supply Current (max): 40 mA
• Maximum Operating Temperature: + 70 C
• Package / Case: TQFP-144
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Allocate Command
2. Poll ALLOC_INT bit until set
3. Read Allocation Result Register
ALLOCATED PACKET NUMBER - Packet number associated with the last memory allocation request. The value is only
valid if the FAILED bit is clear.
Note : For software compatibility with future versions, the value read from the ARR after an allocation request is intended
to be written into the PNR as is, without masking higher bits (provided FAILED = 0).
BANK 2
This register provides access to the read ports of the Receive FIFO and the Transmit completion FIFO. The packet
numbers to be processed by the interrupt service routines are read from this register.
REMPTY - No receive packets queued in the RX FIFO. For polling purposes, uses the RCV_INT bit in the Interrupt Status
Register.
TOP OF RX FIFO PACKET NUMBER - Packet number presently at the output of the RX FIFO. Only valid if REMPTY is
clear. The packet is removed from the RX FIFO using MMU Commands 3) or 4).
TEMPTY - No transmit packets in completion queue. For polling purposes, uses the TX_INT bit in the Interrupt Status
Register.
TX FIFO PACKET NUMBER - Packet number presently at the output of the TX FIFO. Only valid if TEMPTY is clear. The
packet is removed when a TX INT acknowledge is issued.
Note: For software compatibility with future versions, the value read from each FIFO register is intended to be written into
the PNR as is, without masking higher bits (provided TEMPTY and REMPTY = 0 respectively).
SMSC LAN91C110 Rev. B
OFFSET
HIGH
BYTE
BYTE
LOW
4
REMPTY
TEMPTY
1
1
FIFO PORTS REGISTER
0
0
0
0
NAME
0
0
DATASHEET
Page 29
FEAST Fast Ethernet Controller for PCMCIA and Generic 16-Bit Applications
0
0
RX FIFO PACKET NUMBER
TX FIFO PACKET NUMBER
READ ONLY
0
0
TYPE
0
0
0
0
SYMBOL
FIFO
Revision 1.0 (11-04-08)
0
0
Datasheet