AM79C974KCW データシートの表示（PDF） - Advanced Micro Devices
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AM79C974KCW
Advanced Micro Devices
AM79C974KCW Datasheet PDF : 153 Pages
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AMD
AMENDMENT
PIN DESIGNATIONS (continued)
Quick Reference Pin Description
Pin Name
Description
SCSI SPECIFIC
SCSI Interface
SD [7:0]
SCSI Data
SDP
SCSI Data Parity
MSG
Message
C/D
Command/Data
I/O
Input/Output
ATN
Attention
BSY
Busy
SEL
Select
SCSI^RST
REQ
SCSI Bus Reset
Request
ACK
Acknowledge
Miscellaneous
SCSI CLK
SCSI Core Clock
RESERVE
Reserved, DO NOT CONNECT
Power Management
PWDN
Power Down Indicator
Test Interface
BUSY
NAND Tree Test Output
Power Supplies
AVDD
Analog Power
AVSS
Analog Ground
VDD, DVDD
Digital Power
VSS, DVSS
Digital Ground
VDDB, VDDBS
I/O Buffer Power
VSSB, VSSBS
I/O Buffer Ground
Type
IO
IO
I
I
I
O
IO
IO
IO
I
O
I
I
I
O
P
P
P
P
P
P
Driver
OD48
OD48
OD48
OD48
OD48
OD48
OD48
O3
NA
NA
NA
NA
NA
NA
# Pins
8
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
2
5
9
5
11
Listed by Driver Type
The following table describes the various types of drivers that are implemented in the PCnet-SCSI controller. Current
is given as milliamperes:
Name
TS3
TS6
O3
O6
O8
OD6
OD48
LED
Type
Tri-StateTM
Tri-State
Totem Pole
Totem Pole
Totem Pole
Open Drain
Open Drain
LED
IOL (mA)
IOH (mA)
pF
3
–2.0
50
6
–2.0
50
3
–0.4
50
6
–0.4
50
8
–0.4
50
6
NA
50
48
NA
—
12
–0.4
50
8
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