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Datasheet: AM79C930 (Advanced Micro Systems)

Pcnet(tm)-mobile Single-chip Wireless Lan Media Access Controller

 

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PRELIMINARY
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.
Publication# 20183 Rev: B Amendment/0
Issue Date: April 1997
1
Am79C930
PCnetTM-Mobile
Single-Chip Wireless LAN Media Access Controller
DISTINCTIVE CHARACTERISTICS
s
Capable of supporting the IEEE 802.11 standard
(draft)
s
Supports the Xircom NetwaveTM media access
control (MAC) protocols
s
Supports MAC layer functions
s
Individual 8-byte transmit and 15-byte receive
FIFOs
s
Integrated intelligent 80188 processor for MAC
layer functions
s
Glueless PCMCIA bus interface conforming to
PC Card standard--Feb. 1995
s
Full PCMCIA software interface support for PC
Card standard--Feb. 1995
s
Glueless ISA (IEEE P996) bus interface with full
support for Plug and Play release 1.0a
s
Glueless SRAM interface for MAC operations,
supporting up to 128 Kbytes of memory
s
Glueless Flash memory interface, supporting
up to 128 Kbytes of non-volatile memory for
MAC control code, PCMCIA configuration
parameters, and ISA Plug and Play
configuration parameters
s
Provides integrated Transceiver Attachment
Interface (TAI), supporting Frequency-Hopping
Spread Spectrum, Direct Sequence Spread
Spectrum, and infrared physical-layer
interfaces
s
Antenna diversity selection support
s
Fabricated with submicron CMOS technology
with low operating current
s
Supports dual 3 V and 5 V supply applications
s
Low-power mode allows reduced power
consumption for critical battery-powered
applications
s
144-pin Thin Quad Flat Pack (TQFP) package
available for space-critical applications, such as
PCMCIA
s
JTAG Boundary Scan (IEEE 1149.1) test access
port for board-level production test
GENERAL DESCRIPTION
PCnet-Mobile (Am79C930) is the first in a series of mo-
bile networking products in AMD's PCnet family. The
Am79C930 device is the first single-chip wireless LAN
media access controller (MAC) supporting the IEEE
802.11 (draft) standard and the Xircom NetwaveTM
MAC protocols. The Am79C930 device is designed to
have a flexible protocol engine to allow for industry
standard and proprietary protocols. Protocol firmware
for Xircom Netwave and IEEE 802.11 (draft) MAC pro-
tocols are supplied by AMD. It is pin-compatible with
the PCMCIA bus or the ISA (Plug and Play) bus
through a pin-strapping option.
The Am79C930 device contains a PCMCIA/ISA bus
interface unit (BIU), a MAC control unit, and a
transceiver attachment interface (TAI). The TAI sup-
ports frequency-hopping spread spectrum, direct
sequence spread spectrum, and infrared physical layer
interfaces. In addition, a power down function has been
incorporated to provide low standby current for power-
sensitive applications.
The Am79C930 device provides users with a media ac-
cess controller that has flexibility (i.e., bus interface,
protocol, and physical layer support) to allow the
design of multiple products using a single device. By
having all the necessary MAC functions on a single
chip, users only need to add memory and the physical
layer in order to deliver a fully functional wireless LAN
connection.
2 Am79C930
P R E L I M I N A R Y
ORDERING INFORMATION
Standard Products
AMD standard products are available in several packages and operating ranges. The order number (valid combination) is formed
by a combination of the elements below.
Valid Combinations
Valid combinations list configurations planned to be sup-
ported in volume for this device. Consult the local AMD sales
office to confirm availability of specific valid combinations and
to check on newly released combinations.
AM79C930 V C
DEVICE NUMBER/DESCRIPTION
Am79C930
Single-Chip Wireless LAN Media Access Controller
OPTIONAL PROCESSING
\W = Trimmed and Formed in a Tray
OPERATING CONDITIONS
C = Commercial (0
C to +70
C)
PACKAGE TYPE
V = 144-Pin Thin Quad Flat Pack (PQT144)
SPEED
Not Applicable
\W
Valid Combinations
Am79C930 VC\W
Am79C930 3
P R E L I M I N A R Y
BLOCK DIAGRAM
PCMCIA Mode
JTAG
Control
Block
TRST
TMS/T3
TDI/T1
TDO/T2
RXCIN
ANTSLT
ANTSLT
SAR60
ADIN21
ADREF
RXDATA
SDCLK
SDDATA
SDSEL31
TXCMD
TXCMD
TXMOD
TXDATA
TXDATA
RXPE
TXPE
HFPE
HFCLK
LFPE
LFCLK
FDET
LNK
ACT
RXC
Transceiver
Attachment
Interface
MAC
Control
Unit
(80188 core)
Bus
Interface
Unit
(PCMCIA)
MOE
MWE
MA 160
MD 70
XCE
SCE
FCE
USER60
A140
D70
REG
CE1
OE
IORD
IOWR
RESET
WE
WAIT
INPACK
IREQ
STSCHG
PMX21
CLKIN
TEST
PWRDWN
CA168
CAD 70
INT1
ALE
WR
SRDY
UCS
LCS
RESET
DRQ0
DRQ1
INT0
20183B-1
4 Am79C930
P R E L I M I N A R Y
BLOCK DIAGRAM
Bus Interface Unit
A140 or
LA2317, SA160
D70
CLKIN
Slave
Control
PCMCIA
and ISA
Memory
and I/O
Address Buffer
Data Buffer
SIR0
System
Interrupt
Generator
SIR1
...
SIR7
ISA Memory Base
ISA I/O Base
MD[7:0] MA[16:0]
80188
Interrupt
Generator
IREQ
PCMCIA
Config Registers
ALE
CA16
Latch
Bus
Multi-
plexer
CAD70
CA158
MIR0
MIR1
...
MIR15
MOE
MWE
UCS
LCS
SRDY
XCE
FCE
TAICE
SCE
INT1
RESET
PCMCIA
or
ISA Control Signals
Plug and Play
Control Module
Slave
Control
and
Arbitration
for
Memory
Interface
Bus
20183B-2
Am79C930 5
P R E L I M I N A R Y
BLOCK DIAGRAM
Transceiver Attachment Interface Unit
C
R
C
MA[4:0]
MD[7:0]
CLKIN
Slave
Control
Memory
Interface
Bus I/O
and DMA
TIR0
Interrupt
Generator
TCR31
TX
FIFO
8
Bytes
TXD
RESET
TCR...
TIR...
TIR31
TCR0
IRQ
DRQ[1:0]
RX
FIFO
15
Bytes
P->S
S->P
C
R
C
RXD
SFD
Detect
FDET
40
5
10
20
M
U
X
TXC
DPLL
M
U
X
RXCIN
RXCSEL
RXC
C
Transceiver
Control
Signals
Transceiver Interface
Unit Control
Count
Empty
BIAS
Suppress
MUX
Phylen
MUX
80
TAICE
Slave
Control
Sleep
20183B-3
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