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AM79C90JC

Description
CMOS Local Area Network Controller for Ethernet (C-LANCE)
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size386KB,62 Pages
ManufacturerAMD
Websitehttp://www.amd.com
Download Datasheet Parametric Compare View All

AM79C90JC Overview

CMOS Local Area Network Controller for Ethernet (C-LANCE)

AM79C90JC Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerAMD
Parts packaging codeLCC
package instructionQCCJ, LDCC68,1.0SQ
Contacts68
Reach Compliance Codeunknown
Address bus width24
boundary scanNO
Bus compatibility68000; 29000; Z8000; 80286; 80386; LSI-II
Data encoding/decoding methodsNRZ
External data bus width16
JESD-30 codeS-PQCC-J68
JESD-609 codee0
length24.2062 mm
low power modeNO
Number of DMA channels1
Number of I/O lines
Number of serial I/Os1
Number of terminals68
On-chip data RAM width
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeQCCJ
Encapsulate equivalent codeLDCC68,1.0SQ
Package shapeSQUARE
Package formCHIP CARRIER
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Certification statusNot Qualified
RAM (number of words)0
Maximum seat height5.08 mm
Maximum slew rate50 mA
Maximum supply voltage5.25 V
Minimum supply voltage4.75 V
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formJ BEND
Terminal pitch1.27 mm
Terminal locationQUAD
Maximum time at peak reflow temperatureNOT SPECIFIED
width24.2062 mm
uPs/uCs/peripheral integrated circuit typeSERIAL IO/COMMUNICATION CONTROLLER, LAN
Base Number Matches1
PRELIMINARY
Am79C90
CMOS Local Area Network Controller for Ethernet
(C-LANCE)
DISTINCTIVE CHARACTERISTICS
s
Compatible with Ethernet and IEEE 802.3
10BASE-5 Type A, and 10BASE-2 Type B,
“Cheapernet,” 10BASE-T
s
Easily interfaced with 80x86, 680x0, Am29000
®
,
Z8000
microprocessors
s
On-board DMA and buffer management, 64-byte
Receive, 48-byte Transmit FIFOs
s
24-bit-wide linear addressing (Bus Master Mode)
s
Network and packet error reporting
s
Back-to-back packet reception with as little as
0.5
µ
s interframe spacing
s
Diagnostic Routines
— Internal/external loopback
— CRC logic check
— Time domain reflectometer
s
Low power consumption for power-sensitive
applications
s
Completely software- and hardware-compatible with
AMD’s LANCE device (Am7990) (see Appendix A)
GENERAL DESCRIPTION
The Am79C90 CMOS Local Area Network Controller
for Ethernet (C-LANCE) is a 48-pin VLSI device de-
signed to greatly simplify interfacing a microcomputer or
minicomputer to an IEEE 802.3/Ethernet Local Area
Network. The C-LANCE, in conjunction with the
Am7992B Serial Interface Adapter (SIA), Am7996 or
Am79C98 and Am79C100 Transceiver, and closely
coupled local memory and microprocessor, is intended
to provide the user with a complete interface module for
an Ethernet network. The Am79C90 is designed using
a scalable CMOS technology and is compatible with a
variety of microprocessors. On-board DMA, advanced
buffer management, and extensive error reporting and
diagnostics facilitate design and improve system
performance.
BLOCK DIAGRAM
DAL15:0
A23:16
Parallel
Bus
Interface
DMA/Data
Path Control
Microprogram
Store
INTR
HOLD
HLDA
ALE/AS
CS
ADR
DAS
DALO
DALI
READ
BM0/BYTE
BM1/BUSAKO
READY
RESET
Local CPU Interface
C-LANCE/
CPU
Control
Bus
Interface
Station
Address
Detection
Retry
Logic
Serial I/O
Interface
RX
RCLK
TX
TCLK
CLSN
TENA
RENA
17881C-1
Publication#
17881
Rev:
C
Amendment/0
Issue Date:
January 1998
This document contains information on a product under development at Advanced Micro Devices. The
information is intended to help you evaluate this product. AMD reserves the right to change or discontinue
work on this proposed product without notice.
Am7992B SIA Interface
1

AM79C90JC Related Products

AM79C90JC AM79C90 AM79C90PC AM79C90PCTR AM79C90JCTR
Description CMOS Local Area Network Controller for Ethernet (C-LANCE) CMOS Local Area Network Controller for Ethernet (C-LANCE) CMOS Local Area Network Controller for Ethernet (C-LANCE) CMOS Local Area Network Controller for Ethernet (C-LANCE) CMOS Local Area Network Controller for Ethernet (C-LANCE)
Is it Rohs certified? incompatible - incompatible - incompatible
Maker AMD - AMD - AMD
Parts packaging code LCC - DIP - LCC
package instruction QCCJ, LDCC68,1.0SQ - DIP, DIP48,.6 - QCCJ, LDCC68,1.0SQ
Contacts 68 - 48 - 68
Reach Compliance Code unknown - unknown - unknown
Address bus width 24 - 24 - 24
boundary scan NO - NO - NO
Bus compatibility 68000; 29000; Z8000; 80286; 80386; LSI-II - 68000; 29000; Z8000; 80286; 80386; LSI-II - 68000; 29000; Z8000; 80286; 80386; LSI-II
Data encoding/decoding methods NRZ - NRZ - NRZ
External data bus width 16 - 16 - 16
JESD-30 code S-PQCC-J68 - R-PDIP-T48 - S-PQCC-J68
JESD-609 code e0 - e0 - e0
length 24.2062 mm - 61.849 mm - 24.2062 mm
low power mode NO - NO - NO
Number of DMA channels 1 - 1 - 1
Number of serial I/Os 1 - 1 - 1
Number of terminals 68 - 48 - 68
Maximum operating temperature 70 °C - 70 °C - 70 °C
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY - PLASTIC/EPOXY
encapsulated code QCCJ - DIP - QCCJ
Encapsulate equivalent code LDCC68,1.0SQ - DIP48,.6 - LDCC68,1.0SQ
Package shape SQUARE - RECTANGULAR - SQUARE
Package form CHIP CARRIER - IN-LINE - CHIP CARRIER
Peak Reflow Temperature (Celsius) NOT SPECIFIED - NOT SPECIFIED - NOT SPECIFIED
power supply 5 V - 5 V - 5 V
Certification status Not Qualified - Not Qualified - Not Qualified
Maximum seat height 5.08 mm - 5.715 mm - 5.08 mm
Maximum slew rate 50 mA - 50 mA - 50 mA
Maximum supply voltage 5.25 V - 5.25 V - 5.25 V
Minimum supply voltage 4.75 V - 4.75 V - 4.75 V
Nominal supply voltage 5 V - 5 V - 5 V
surface mount YES - NO - YES
technology CMOS - CMOS - CMOS
Temperature level COMMERCIAL - COMMERCIAL - COMMERCIAL
Terminal form J BEND - THROUGH-HOLE - J BEND
Terminal pitch 1.27 mm - 2.54 mm - 1.27 mm
Terminal location QUAD - DUAL - QUAD
Maximum time at peak reflow temperature NOT SPECIFIED - NOT SPECIFIED - NOT SPECIFIED
width 24.2062 mm - 15.24 mm - 24.2062 mm
uPs/uCs/peripheral integrated circuit type SERIAL IO/COMMUNICATION CONTROLLER, LAN - SERIAL IO/COMMUNICATION CONTROLLER, LAN - SERIAL IO/COMMUNICATION CONTROLLER, LAN
Base Number Matches 1 - 1 - 1
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