dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 57

• 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
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
ECL Logic Ground
Transmit Bit Clock
Transmit Bit Clock
ECL Logic Power
Transmit Byte Clock
Transmit Byte Clock
FOTX Enable Level
No Connect
No Connect
FOTX Enable
Local Byte Clock
PHY Port B Request Data
PHY Port B Request Data
PHY Port B Request Data
PHY Port B Request Data
CMOS Logic Ground
PHY Port B Request Data
CMOS I O Power
PHY Port B Request Data
CMOS I O Ground
PHY Port B Request Data
PHY Port B Request Data
PHY Port B Request Control
PHY Port B Request Parity
Signal Name
(Continued)
TABLE 6-1 DP83251 Pinout Summary (Continued)
a
b
a
a
b
a
a
b
a
b
b
a
k
k
k
k
k
k
k
k
0
1
2
3
4
5
6
7
l
l
l
l
l
l
l
l
57
Symbol
RXC
RXC
V
RXD
RXD
GND
LBD
LBD
V
TXD
TXD
GND
TXC
TXC
V
TBC
TBC
TEL
N C
N C
TXE
LBC
BRD0
BRD1
BRD2
BRD3
GND
BRD4
V
BRD5
GND
BRD6
BRD7
BRC
BRP
CC
CC
CC
CC
a
b
b
a
b
b
b
a
a
a
a
b
I O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ECL TTL Open
Drain Power
a
a
a
a
a
a
a
a
ECL
ECL
ECL
ECL
ECL
ECL
ECL
ECL
ECL
ECL
ECL
ECL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
5V
0V
5V
0V
5V
0V
5V
0V