AM79C960KCW Advanced Micro Devices, AM79C960KCW Datasheet - Page 27
AM79C960KCW
Manufacturer Part Number
AM79C960KCW
Description
PCnetTM-ISA Single-Chip Ethernet Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C960KCW.pdf
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PRDB0-7
Private Data Bus
This is the data bus for the static RAM, the Boot PROM,
and the Address PROM.
SLEEP
Sleep
When SLEEP input is asserted (active LOW), the
PCnet-ISA controller performs an internal system reset
and proceeds into a power savings mode. All outputs
will be placed in their normal reset condition. All PCnet-
ISA controller inputs will be ignored except for the
SLEEP pin itself. Deassertion of SLEEP results in
wake-up. The system must delay the starting of the net-
work controller by 0.5 seconds to allow internal analog
circuits to stabilize.
SMA
Shared Memory Architecture
This pin is sampled after the hardware RESET se-
quence. The pin must be pulled permanently LOW for
operation in the shared memory mode.
SMAM
Shared Memory Address Match Input
This pin indicates an access to shared memory when
active. The type of access is decided by MEMR or
MEMW.
Input/Output
Input
Input
P R E L I M I N A R Y
Am79C960
SROE
Static RAM Output Enable
This pin directly controls the external SRAM’s OE pin.
SRWE
Static RAM Write Enable
This pin directly controls the external SRAM’s WE pin.
TE
Test Enable
This pin is for factory use only. It has a default value of
HIGH if left unconnected. It is strongly recommended
that this pin always be connected to V
XTAL1
Crystal Connection
The internal clock generator uses a 20 MHz crystal that
is attached to pins XTAL1 and XTAL2. Alternatively, an
external 20 MHz CMOS-compatible clock signal can be
used to drive this pin. Refer to the section on External
Crystal Characteristics for more details.
XTAL2
Crystal Connection
The internal clock generator uses a 20 MHz crystal that
is attached to pins XTAL1 and XTAL2. If an external
clock is used, this pin should be left unconnected.
Output
Output
Input
Input
Output
DD
.
AMD
1-369
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