KS8721B Micrel Inc, KS8721B Datasheet - Page 4
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KS8721B
Manufacturer Part Number
KS8721B
Description
Special Function IC
Manufacturer
Micrel Inc
Type
Transceiverr
Specifications of KS8721B
Peak Reflow Compatible (260 C)
No
Leaded Process Compatible
No
Number Of Drivers/receivers
1/1
Protocol
MII, RMII
Voltage - Supply
2.375 V ~ 2.625 V
Mounting Type
Surface Mount
Package / Case
48-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With
576-1006 - BOARD EVAL EXPERIMENT KS8721B
Lead Free Status / RoHS Status
Not Compliant, Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
KS8721B
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
KS8721BL
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Company:
Part Number:
KS8721BT
Manufacturer:
LUCENT
Quantity:
560
Part Number:
KS8721BT
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
KS8721BTR
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Table Of Contents
M9999-030106
Pin Description .............................................................................................................................................................6
Strapping Option ...........................................................................................................................................................9
Pin Confi guration ........................................................................................................................................................10
Introduction
Register Map
100BaseTX Transmit ............................................................................................................................................. 11
100BaseTX Receive ............................................................................................................................................. 11
PLL Clock Synthesizer ..........................................................................................................................................
PLL Clock Synthesizer ..........................................................................................................................................
PLL Clock Synthesizer
Scrambler/De-scrambler (100BaseTX only) ......................................................................................................... 11
10BaseT Transmit ................................................................................................................................................. 11
10BaseT Receive .................................................................................................................................................. 11
SQE and Jabber Function (10Base only) .............................................................................................................. 11
Auto-Negotiation ................................................................................................................................................... 11
MII Management Interface ....................................................................................................................................12
MII Data Interface ..................................................................................................................................................12
RMII Signal Defi nition ............................................................................................................................................13
Reference Clock ....................................................................................................................................................13
Carrier Sense/Receive Data Valid .........................................................................................................................13
Receive Data .........................................................................................................................................................13
Transmit Enable ....................................................................................................................................................13
Transmit Data ........................................................................................................................................................14
Collision Detection ................................................................................................................................................14
RX_ER
RMII AC Characteristics ........................................................................................................................................14
Auto Crossover (Auto MDI/MDI-X) ........................................................................................................................15
Power Management ..............................................................................................................................................16
100BT FX Mode ....................................................................................................................................................16
Media Converter Option ........................................................................................................................................16
Register 0h: Basic Conrol .....................................................................................................................................17
Register 1h: Basic Status .....................................................................................................................................18
Register 2h: PHY Identifi er 1 ................................................................................................................................18
Register 3h: PHY Identifi er 2 ................................................................................................................................18
Register 4h: Auto-Negotiation Advertisement .......................................................................................................18
Register 5h: Auto-Negotiation Link Partner Ability ................................................................................................18
Register 6h: Auto-Negotiation Expansion .............................................................................................................19
Register 7h: Auto-Negotiation Next Page .............................................................................................................19
Register 8h: Link Partner Next Page Ability .........................................................................................................19
Register 15h: RXER Counter ...............................................................................................................................
Register 15h: RXER Counter ...............................................................................................................................
Register 15h: RXER Counter
Register 1bh: Interrupt Control/Status Register ...................................................................................................
Register 1bh: Interrupt Control/Status Register ...................................................................................................
Register 1bh: Interrupt Control/Status Register
Register 1fh: 100BaseTX PHY Controller ............................................................................................................
Register 1fh: 100BaseTX PHY Controller ............................................................................................................
Register 1fh: 100BaseTX PHY Controller
Transmit Clock ..............................................................................................................................................12
Receive Clock ...............................................................................................................................................12
Transmit Enable ............................................................................................................................................12
Receive Data Valid ........................................................................................................................................12
Error Signals ..................................................................................................................................................12
Carrier Sense ................................................................................................................................................12
Collision .........................................................................................................................................................13
............................................................................................................................................................ 11
............................................................................................................................................................14
............................................................................................................................................................17
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