LAN91C96TQFP SMSC, LAN91C96TQFP Datasheet - Page 24
![Ethernet ICs Non-PCI 10 Mbps Ethernet MAC](/photos/27/13/271359/lan9116_sml.jpg)
LAN91C96TQFP
Manufacturer Part Number
LAN91C96TQFP
Description
Ethernet ICs Non-PCI 10 Mbps Ethernet MAC
Manufacturer
SMSC
Type
Single Chip MAC and PHY Controllerr
Datasheet
1.LAN91C96-MU.pdf
(125 pages)
Specifications of LAN91C96TQFP
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, 802.3u
Data Rate
10 Mbps, 100 Mbps
Supply Voltage (max)
5 V
Supply Voltage (min)
0 V
Supply Current (max)
95 mA
Maximum Operating Temperature
+ 70 C
Package / Case
TQFP-100
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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5.1
Revision 1.0 (10-24-08)
The LAN91C96 consists of an integrated Ethernet controller mapped entirely in I/O space. In addition,
PCMCIA attribute memory space is decoded to interface an external CIS ROM, with configuration registers as
per PCMCIA 3.X extensions (except COR) implemented on-chip in attribute space above the ROM decode
area. The PCMCIA Configuration Registers are accessible in I/O space and also to allow non-PCMCIA dual
function designs.
The Ethernet controller function includes a built-in 6kbyte RAM for packet storage. This RAM buffer is
accessed by the CPU through sequential access regions of 256 bytes each. The RAM access is internally
arbitrated by the LAN91C96, and dynamically allocated between transmit and receive packets. Each packet
may consist of one or more 256 byte page. The Ethernet controller functionality is identical to the LAN91C94
and LAN91C95 except where indicated otherwise.
The LAN91C96 Memory Management Unit parameters are:
Buffer Memory
The logical addresses for RAM access are divided into TX area and RX area.
The TX area is seen by the CPU as a window through which packets can be loaded into memory before
queuing them in the TX FIFO of packets. The TX area can also be used to examine the transmit
completion status after packet transmission.
The RX area is associated to the output of the RX FIFO of packets, and is used to access receive packet
data and status information.
The logical address is specified by loading the address pointer register. The pointer can automatically
increment on accesses.
All accesses to the RAM are done via I/O space.
A bit in the address pointer also specifies if the address refers to the TX or RX area.
In the TX area, the host CPU has access to the next transmit packet being prepared for transmission. In
the RX area, it has access to the first receive packet not processed by the CPU yet.
The FIFO of packets, existing beneath the TX and RX areas, is managed by the MMU. The MMU
dynamically allocates and releases memory to be used by the transmit and receive functions.
RAM SIZE
MAX. NUMBER OF
PAGES
MAX. NUMBER OF
PACKETS
MAX. PAGES PER
PACKET
PAGE SIZE
DATASHEET
Page 24
6kbytes
24
24 (FIFOs have 24
entries of 5 bits)
6
256 bytes
Non-PCI Single-Chip Full Duplex Ethernet Controller with Magic Packet
SMSC LAN91C96 5v&3v
Datasheet
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