DP83256VF National Semiconductor, DP83256VF Datasheet - Page 66
DP83256VF
Manufacturer Part Number
DP83256VF
Description
IC FDDI LAYER CTRLR 160PQFP
Manufacturer
National Semiconductor
Series
PLAYER+™r
Datasheet
1.DP83256VF.pdf
(144 pages)
Specifications of DP83256VF
Controller Type
physical layer controller
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
160-BFQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Supply
-
Interface
-
Other names
*DP83256VF
- Current page: 66 of 144
- Download datasheet (997Kb)
D0 –D7
5 0 Registers
5 22 LINK ERROR THRESHOLD REGISTER (LETR)
The Link Error Threshold Register contains the start value for the Link Error Monitor Counter It is an 8-bit down-counter which
decrements if link errors are detected
When the Counter reaches 0 the Link Error Monitor Threshold Register value is loaded into the Link Error Monitor Counter and
the Link Error Monitor Threshold bit (LEMT) of the Interrupt Condition Register (ICR) is set to one
The Link Error Monitor Threshold Register value is also loaded into the Link Error Monitor Counter during every Control Bus
Interface write cycle of LETR
The counter is initialized to 0 during the reset process (i e E RST
ACCESS RULES
Bit
LET7
D7
ADDRESS
LET0–LET7
15h
Symbol
LET6
D6
(Continued)
LINK ERROR THRESHOLD BIT
LET0 is the Least Significant Bit (LSB)
Always
READ
LET5
D5
LET4
D4
WRITE
Always
k
LET3
0–7
D3
66
l
Start value for the Link Error Monitor Counter
e
GND)
Description
LET2
D2
LET1
D1
LET0
D0
Related parts for DP83256VF
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
National Semiconductor [8-Bit D/A Converter]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
National Semiconductor [Media Coprocessor]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
AC97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
Manufacturer:
National Semiconductor
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
General Purpose, Low Voltage, Low Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
8-bit 20 MSPS flash A/D converter.
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Low Noise Quad Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad Differential Line Receivers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad High Speed Trapezoidal? Bus Transceiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Dual Line Receiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
TTL to 10k ECL Level Translator with Latch
Manufacturer:
National Semiconductor
Datasheet: