CS8920A
10BASE-T Interface
Symbol
TXD+
TXD-
Pin Number Type
Description
125
126
dO 10BASE-T Transmit: Differential output pair drives 10 Mb/s
Manchester-encoded data to the 10BASE-T transmit pair.
RXD+
RXD-
129
130
dI
10BASE-T Receive: Differential input pair receives 10 Mb/s
Manchester-encoded data from the 10BASE-T receive pair.
Attachment Unit Interface (AUI)
Symbol
DO+
DO-
Pin Number Type
Description
121
122
dO AUI Data Out: Differential output pair drives 10 Mb/s
Manchester-encoded data to the AUI transmit pair.
DI+
DI-
CI+
CI-
117
118
119
120
dI
dI
AUI Data In: Differential input pair receives 10 Mb/s Manchester-encoded
data from the AUI receive pair.
AUI Collision In: Differential input pair connects to the AUI collision pair.
A collision is indicated by the presence of a 10 MHz +/-15% signal with
duty cycle no worse than 60/40.
Pin Types:
dI
dO
B
=
=
=
=
Differential Input Pair
Differential Output Pair
Bi-Directional with Tri-State Output P
Open Drain Output
I
O
=
=
=
Input
Output
Power
G
ts
w
=
=
=
Ground
Tri-State
Internal Weak Pullup
OD
Digital outputs are followed by drive in mA (Example: OD24 = Open Drain Output with 24 mA drive).
12
DS238PP2
CIRRUS [ CIRRUS LOGIC ]
