DP83850CVF National Semiconductor, DP83850CVF Datasheet - Page 9

• Manufacturer Part Number: DP83850CVF
• Description: IC CONTROLLER INTERFACE 132-PQFP
• Manufacturer: National Semiconductor

Specifications of DP83850CVF

• Controller Type: Ethernet Repeater Interface Controller
• Interface: Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 295mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 132-MQFP, 132-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83850CVF

2.0 Pin Descriptions
2.5 Pin Type Designation
PART[5:0]
RID_ER
RSM[3]
/RXECONFIG
RSM[3]
RSM[2:0]
MODE[1:0]
Note: A table showing pin type designation is given in section 2.5
Pin Type
Signal Name
I/O/Z
O/Z
OC
M
O
H
L
I
Input Buffer
Output Buffer, driven high or low at all times
Bi-directional Buffer with high impedance output
Output Buffer with high impedance capability
Open Collector like signals. These buffers are
either driven low or in a high-impedance state.
Output low drive: 4 mA
Output medium drive: 12 mA
Output high drive : 24 mA
I/O, L O, L
I/O, L
Type
O, L
O, L
I
Active
Description
high
(Continued)
—
—
—
—
Partition: Used to indicate each port's Jabber and Partition status. PART[3:0] cycle
through each port number (0-11) continuously. PART[4] indicates the Partition status
for each port (1 = Port Partitioned). PART[5] indicates the Jabber status for each port
(1 = Port Jabbering). These pins are intended to be decoded to drive LEDs.
Repeater ID Error: This pin is asserted under the conditions which set the RID_error
bit in the DEVICEID register.
Repeater State Machine Output/ RXE Polarity: This pin is an input during reset and
it is used to latch the desired polarity of RXE[11:0] signals.
When this pin is pulled high or it is unconnected, then the RXE signals become active
high. However, if this signal is pulled low, then the RXE signals become active low.
In all other non-reset times, this pin reflects the output of the Repeater State Machine.
Test Outputs indicating the state of the Repeater State Machine.
RSM[3:0]
Other states are undefined.
Mode Inputs: The 100RIC may be configured in the following modes:
MODE[1:0]
0,0
1,0
0,1
1,1
0
1
2
3
4
State
idle
collision
one port left
repeat
noise
Operation
No special modes selected
Test mode
Test mode
Preamble regeneration (T4) mode
9
Pin Description
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