am79c940 Advanced Micro Devices, am79c940 Datasheet - Page 111

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

STDCLK
Note: During transmit, the RXCRS input must be asserted (high) and remain active-high after TXEN goes active (high). If
RXCRS is deasserted before TXEN is deasserted, LCAR will be reported (Transmit Frame Status) after the transmission is
completed by the MACE device.
TXDAT+
RXCRS
TXEN
SRDCLK
SF/BD
SRD
EAR
91
BIT
4
(Data Byte 51)
72
70
Byte 64
BIT
5
BIT
6
BIT
7
EADI Feature Reject Timing
89
BIT
GPSI Transmit Timing
0
73
85
BIT
1
Am79C940
BIT
2
86
(Data Byte 52)
BIT
3
Byte 65
BIT
4
Note 1
19
20
BIT
5
17
BIT
6
18
21
BIT
7
BIT
0
71
(Data Byte 53)
BIT
1
16235C-46
Byte 66
16235C-47
AMD
111