RTL8208B-LF/RTL8208BF-LF
Datasheet
5. Pin Descriptions
In order to reduce pin count, and therefore size and cost, some pins have multiple functions. In such cases
the functions are separated with a “ / ” symbol. For the RTL8208B-LF refer to Figure 1, page 3; for the
RTL8208BF-LF refer to Figure 2, page 4, for a graphical representation.
Signal type codes shown below are used in the previous and following tables:
I:
Input
P:
Power
O:
A:
D:
ND:
Output
G:
Pu:
Pd:
Ground
Internal pull up (30K ohm)
Internal pull down (30K ohm)
Analog signal
Digital signal
Not defined
5.1. Media Connection Pins
Table 2. Media Connection Pins
Pin Name
Pin
Type Description
RXIP[7:0]
38, 30,
AI
Receiver Input.
28, 20, 19,
11 , 9, 1
Differential positive signal shared by 100Base-TX, 100Base-FX, and
10Base-T.
RXIN[7:0]
TXOP[7:0]
TXON[7:0]
37, 31, 27,
21, 18, 12, 8,
2
35, 33, 25,
23, 16, 14, 6,
4
36, 32, 26,
22, 17, 13, 7,
3
AI
Receiver Input.
Differential negative signal shared by 100Base-TX, 100Base-FX, and
10Base-T.
Transmitter Output.
Differential positive signal shared by 100Base-TX, 100Base-FX, and
10Base-T.
Transmitter Output.
Differential negative signal shared by 100Base-TX, 100Base-FX, and
10Base-T.
AO
AO
5.2. Power and Ground Pins
Table 3. Power and Ground Pins
Type Description
Pin Name
VDDA
Pin
10, 24, 34, 117,
118, 124, 128
127
5, 15, 29, 39,
40, 121, 123
60, 90
46, 68, 103
47, 61, 69, 89,
104
AP
1.8V Power to analog.
VDDAH
VSSA
AP
AG
3.3V Power to regulator.
Analog ground.
VDD
VDDO
VSS
DP
DP
DG
1.8V Power to digital core.
3.3V Power to digital I/O.
Digital ground.
Single-Chip Octal 10/100-TX/FX PHY Transceiver
6
Track ID: JATR-1076-21 Rev. 1.3
REALTEK [ Realtek Semiconductor Corp. ]
