am79c940 Advanced Micro Devices, am79c940 Datasheet - Page 17

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

PIN SUMMARY
Pin Name
Attachment Unit Interface (AUI)
DO+/DO–
DI+/DI–
CI+/CI–
RXCRS
TXEN
CLSN
DXCVR
STDCLK
SRDCLK
Digital Attachment Interface (DAI)
TXDAT+
TXDAT–
TXEN
RXDAT
RXCRS
CLSN
DXCVR
STDCLK
SRDCLK
10BASE–T Interface
TXD+/TXD–
TXP+/TXP–
RXD+/RXD–
LNKST
RXPOL
TXEN
RXCRS
CLSN
DXCVR
STDCLK
SRDCLK
General Purpose Serial Interface (GPSI)
STDCLK
TXDAT+
TXEN
SRDCLK
RXDAT
RXCRS
CLSN
DXCVR
Data Out
Data In
Control In
Receive Carrier Sense
Transmit Enable
Collision
Disable Transceiver
Serial Transmit Data Clock
Serial Receive Data Clock
Transmit Data +
Transmit Data –
Transmit Enable
Receive Data
Receive Carrier Sense
Collision
Disable Transceiver
Serial Transmit Data Clock
Serial Receive Data Clock
Transmit Data
Transmit Pre-distortion
Receive Data
Link Status
Receive Polarity
Transmit Enable
Receive Carrier Sense
Collision
Disable Transceiver
Serial Transmit Data Clock
Serial Receive Data Clock
Serial Transmit Data Clock
Transmit Data +
Transmit Enable
Serial Receive Data Clock
Receive Data
Receive Carrier Sense
Collision
Disable Transceiver
Pin Function
Am79C940
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
Active
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
Low
Low
Low
Low
Low
Low
TTL output. Input in DAI, GPSI port
TTL. See also GPSI
TTL output. Input in DAI, GPSI port
TTL. See also DAI port
TTL. See also DAI port
TTL input
Pseudo-ECL
Pseudo-ECL
Pseudo-ECL
TTL. TXEN in DAI port
TTL output. Input in GPSI
TTL low
Output. Input in GPSI
Output. Input in GPSI
TTL. See also GPSI
TTL
TTL. See TXEN in GPSI
TTL input. Output in AUI
TTL output. Input in GPSI
TTL high
Output. Input in GPSI
Output. Input in GPSI
Open Drain
Open Drain
TTL. TXEN in DAI port
TTL output. Input in GPSI
TTL high
Output. Input in GPSI
Output. Input in GPSI
Input
TTL. TXEN in DAI port
Input. See also EADI port
TTL input. Output in AUI
TTL low
Comment
AMD
17