MB86967 Datasheet, PDF (12/129 Pages) Fujitsu Component Limited. – LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces

MB86967
• Buffer memory interface pins in PC card mode, ISA bus mode, and general-purpose bus mode
Pin no. Symbol
34 to 41 BD0 to BD7
42 to 45,
47 to 50,
53 to 56,
58 to 60
33
BA0 to BA14
BOE
32
BWE
30
BCS
Pin name
BUFFER MEMORY
DATA BUS
BUFFER MEMORY
ADDRESS BUS
BUFFER OUTPUT
ENABLE
BUFFER WRITE
ENABLE
BUFFER RAM CHIP
SELECT
I/O
Function
B These pins are used as data buses for data
exchange between the SRAM buffer memory and the
MB86967.
O These pins permit addressing of external SRAM
buffer memory expandable to 32 Kbytes.
O This pin is used for output of Active-Low signals and
for enabling buffer memory at a read operation.
O This pin is used for output of Active-Low signals and
for enabling buffer memory at a write operation.
O This pin is used for output of Active-Low signals and
RAM chip select signals.
• Other pins in PC card mode, ISA bus mode, and general-purpose bus mode
Pin no.
52
73
61
62
Symbol
MODE/LEDL
(PC card mode)
LEDL
(ISA bus mode)
MODE
(General-purpose
bus mode)
GNDM
(PC card mode)
MODE/LEDR
(ISA bus mode)
GNDM
(General-purpose
bus mode)
CLKO
CLKI
1,
VDD1 to VDD4
26,
51,
94
70
VDDA1
81
VDDA2
16, GND1 to GND7
24,
31,
46,
57,
86,
100
67
GNDA1
76
GNDA2
Pin name
MODE SELECT/
LINK LED
I/O
Function
IU/OD This pin serves as a mode select pin or a pin for
driving the LED indicating the status of the link
OD ^{test according to the mode used. It is pulled-up}
internally.
IU
MODE SELECT/
RECEIVE LED
G
I/OD
G
This pin serves as a mode select pin or a pin for
driving the LED indicating the receive status
according to the mode used. It serves as a GND
pin in the PC card mode and general-purpose
bus mode.
CRYSTAL
OSCILLATOR
DIGITAL VDD
O Connect an external 20-MHz crystal oscillator.
I Input external clock pulses to CLKI. The wiring
between CLKO/CLKI and the crystal oscillator
should be as short as possible to prevent cross-
talk with other signal lines.
— These pins are used for power supply to the
digital sections.
ANALOG VDD
DIGITAL
GROUND
— These pins are used for power supply to the
encoder/decoder and 10BASE-T transceiver.
— These pins are used for grounding the digital
sections.
ANALOG
GROUND
— These pins are used for grounding the encoder/
decoder and 10BASE-T transceiver.
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