am79c940 Advanced Micro Devices, am79c940 Datasheet - Page 18

• Manufacturer Part Number: am79c940
• Description: Media Access Controller For Ethernet Mace
• Manufacturer: Advanced Micro Devices

PIN SUMMARY (continued)
18
Pin Name
External Address Detection Interface (EADI)
SF/BD
SRD
EAM/R
SRDCLK
Host System Interface
DBUS15–0
ADD4–0
R/W
RDTREQ
TDTREQ
DTV
EOF
BE0
BE1
CS
FDS
INTR
EDSEL
TC
SCLK
RESET
IEEE 1149.1 Test Access Port (TAP) Interface
TCK
TMS
TDI
TDO
General Interface
XTAL1
XTAL2
SLEEP
DV
DV
AV
AV
DD
SS
DD
SS
AMD
Start Frame/Byte Delimiter
Serial Receive Data
External Address Match/Reject
Serial Receive Data Clock
Data Bus
Address
Read/Write
Receive Data Transfer Request
Transmit Data Transfer Request
Data Transfer Valid
End Of Frame
Byte Enable 0
Byte Enable 1
Chip Select
FIFO Data Strobe
Interrupt
Edge Select
Timing Control
System Clock
Reset
Test Clock
Test Mode Select
Test Data Input
Test Data Out
Crystal Input
Crystal Output
Sleep Mode
Digital Power (4 pins)
Digital Ground (6 pins)
Analog Power (4 pins)
Analog Ground (2 pins)
Pin Function
Am79C940
Type
I/O
I/O
I/O
O
O
O
O
O
O
O
O
P
P
P
P
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
High/Low
Active
High
High
High
High
High
High
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Output except in GPSI
Tristate
Open Drain
Internal pull-up
Internal pull-up
Internal pull-up
Internal pull-up
CMOS
CMOS
TTL
Comment