LAN91C100FD-ST SMSC, LAN91C100FD-ST Datasheet - Page 9

• 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

SMSC LAN91C100FD Rev. D
FEAST Fast Ethernet Controller with Full Duplex Capability
PQFP/TQFP
100, 98, 89,
82, 94, 111,
84, 87, 88,
90, 91, 96,
31, 57, 73,
27, 41, 63,
74, 83, 85,
14, 32, 46,
50, 66, 75,
42, 40-38,
69-67, 65,
64, 62-60,
81-76, 71,
5, 10, 23,
107, 119,
125, 132,
143, 165,
179, 186,
116, 120,
122, 128,
134, 138,
169, 174,
180, 185,
102, 104
PIN NO.
99, 101,
92, 103,
59, 56,
49-47,
45-43,
36-33
191
205
200
203
70
97
86
93
3
4
2
RAM Data
Bus
RAM Data
Bus
RAM
Address
Bus
Receive
DMA
Crystal 1
Crystal 2
Power
Analog
Power
Ground
Analog
Ground
Transmit
Enable
NAME
RD0-RD7
RD8-
RD31
RA2-RA16
nROE
nRWE0-
RWE3
RCVDMA
XTAL1
XTAL2
VDD
AVDD
GND
AGND
TXEN
SYMBOL
DATASHEET
BUFFER
I/O4 with
I/O4 with
pullups
pullups
TYPE
Iclk
O4
O4
O4
O4
O4
Page 9
Bidirectional. Carries the local buffer memory
read and write data. Reads are always 32 bits
wide. Writes are controlled individually at the
byte level. Floated if FLTST=1 during RECEIVE
FRAME STATUS WORD writes for packet
forwarding information (RA2-RA16=0,
RCVDMA=1, nRWE0-nRWE3=0).
Bidirectional. Carries the local buffer memory
read and write data. Reads are always 32 bits
wide. Writes are controlled individually at the
byte level.
Outputs. This bus specifies the buffer RAM
doubleword being accessed by the
LAN91C100FD.
Output. Active low signal used to read a
doubleword from buffer RAM.
Outputs. Active low signals used to write any
byte, word or dword in RAM.
Output. This pin is active during LAN91C100FD
write memory cycles of receive packets.
An external 25 MHz crystal is connected across
these pins. If a TTL clock is supplied instead, it
should be connected to XTAL1 and XTAL2
should be left open.
+5V power supply pins.
+5V analog power supply pins.
Ground pins.
Analog ground pin.
Output. Used for 10 Mbps ENDEC. This pin
stays low when MIISEL is high.
DESCRIPTION
Revision 1.0 (09-22-08)