LAN91C96TQFP SMSC, LAN91C96TQFP Datasheet - Page 50
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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Revision 1.0 (10-24-08)
A15
0
INT SEL1-0 - In LOCAL BUS mode, used to select one out of four interrupt pins. The three
unused interrupts are tristated.
INT SEL1
I/O SPACE - BANK1
For LOCAL BUS mode only, this register holds the I/O address decode option chosen for the I/O and ROM
space. It is part of the EEPROM saved setup, and is not usually modified during run-time.
A15 - A13 and A9 - A5 - These bits are compared in LOCAL BUS mode against the I/O address on the
bus to determine the IOBASE for LAN91C96 registers. The 64k I/O space is fully decoded by the
LAN91C96 down to a 16 location space, therefore the unspecified address lines A4, A10, A11 and A12
must be all zeros.
ROM SIZE - Determines the ROM decode area in LOCAL BUS mode memory space as follows:
00 = ROM disable
01 = 16k: RA14-18 define ROM select.
10 = 32k: RA15-18 define ROM select.
11 = 64k: RA16-18 define ROM select.
RA18-RA14 - These bits are compared in LOCAL BUS mode against the memory address on the bus to
determine if the ROM is being accessed, as a function of the ROM SIZE. ROM accesses are read only
memory accesses defined by MEMRD* going low.
For a full decode of the address space unspecified upper address lines have to be: A19 = "1", A20-A23
lines are not directly decoded, however LOCAL BUS systems will only activate SMEMRD* only when A20-
A23=0.
All bits in this register are loaded from the serial EEPROM in LOCAL BUS Mode only. In PCMCIA mode,
the I/O base is set to the default value (as in LOCAL BUS mode) as defined below.
The I/O base decode defaults to 300h (namely, the high byte defaults to 18h). ROM SIZE defaults to 01.
ROM decode defaults to CC000 (namely the low byte defaults to 67h).
Below chart shows the decoding of I/O Base Address 300h:
A14
0
0
1
1
A15
0
OFFSET
0
0
ROM SIZE
2
A13
0
A14
A12
0
1
INT SEL0
0
0
1
0
1
BASE ADDRESS REGISTER
A11
0
A13
0
1
A10
RA18
0
NAME
DATASHEET
INTERRUPT PIN USED
INTR0
INTR1
INTR2
INTR3
A9
1
A9
1
0
RA17
A8
1
Page 50
A7
Non-PCI Single-Chip Full Duplex Ethernet Controller with Magic Packet
0
A8
1
0
RA16
A6
0
READ/WRITE
TYPE
A5
0
A7
0
1
RA15
A4
0
A3
A6
0
0
1
RA14
SYMBOL
BAR
A2
0
SMSC LAN91C96 5v&3v
A5
0
1
A1
0
Datasheet
A0
0
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