dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 67

• Manufacturer Part Number: dp83251
• Description: Player Device Fddi Physical Layer Controller
• Manufacturer: National Semiconductor Corporation

6 0 Pin Descriptions
Pin No
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
PHY A Indicate Data
PHY A Request Data
CMOS Logic Ground
PHY Port A Indicate Data
PHY Port A Request Data
PHY Port A Indicate Data
PHY Port A Request Data
PHY Port A Indicate Data
PHY Port A Request Data
PHY Port A Indicate Data
Port A Request Data
Cascade Start
Cascade Ready
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
Clock Detect
Signal Detect
External Loopback Enable
Receive Bit Clock
Receive Bit Clock
ECL Logic Power
Receive Data
Receive Data
ECL Logic Ground
External Loopback Data
External Loopback Data
ECL I O Power
Transmit Data
Transmit Data
Signal Name
(Continued)
TABLE 6-2 DP83255 Pinout Summary (Continued)
a
b
a
b
b
a
k
k
k
4
0
4
l
l
l
b
a
k
k
k
k
k
k
k
3
2
1
0
3
2
1
l
l
l
l
l
l
l
67
Symbol
AID4
ARD4
GND
AID3
ARD3
AID2
ARD2
AID1
ARD1
AID0
ARD0
CS
CR
N C
N C
N C
N C
N C
N C
N C
N C
CD
TTLSD
ELB
RXC
RXC
V
RXD
RXD
GND
LBD
LBD
V
TXD
TXD
CC
CC
a
b
b
b
a
a
a
b
I O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
ECL TTL Open
Drain Power
Open Drain
a
a
a
a
ECL
ECL
ECL
ECL
ECL
ECL
ECL
ECL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
0V
5V
0V
5V