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KSZ8841-16

Single-Port Ethernet MAC Controller with Non-PCI Interface

Micrel 

Micrel, Inc.

KSZ8841-16/32 MQL/MVL/MBL

Pin Number Pin Name

30

EEDI

Type

Ipd

31

SWR

Ipd

32

AEN

Ipu

33

WRN

Ipd

34

DGND

Gnd

35

ADSN

Ipd

36

PWRDN

Ipu

37

AGND

Gnd

38

VDDA

P

39

AGND

Gnd

40

NC

—

41

NC

—

42

AGND

Gnd

43

VDDA

P

44

NC

—

45

RXP1

I/O

46

RXM1

I/O

47

AGND

Gnd

48

TXP1

I/O

49

TXM1

I/O

50

VDDATX

P

51

VDDARX

P

52

NC

—

53

NC

—

54

AGND

Gnd

55

NC

—

56

NC

—

57

VDDA

P

58

AGND

Gnd

59

NC

Ipu

60

NC

Ipu

61

ISET

O

62

AGND

Gnd

Pin Function

EEPROM Data In

This pin is connected to DO output of the serial EEPROM when EEEN is pull-up.

This pin can be pull-down for 8-bit bus mode, pull-up for 16-bus mode or don’t care for 32-

bus mode when EEEN is pull-down (without EEPROM).

Synchronous Write/Read

Write/Read signal for synchronous bus accesses. Write cycles when high and Read

cycles when low.

Address Enable

Address qualifier for the address decoding, active Low.

Write Strobe Not

Asynchronous write strobe, active Low.

Digital IO ground

Address Strobe Not

For systems that require address latching, the rising edge of ADSN indicates the latching

moment of A15-A1 and AEN.

Full-chip power-down. Active Low (Low = Power down; High or floating = Normal

operation).

Analog ground

1.2V analog VDD input power supply from VDDCO (pin24) through external Ferrite bead

and capacitor.

Analog ground

No Connect

No Connect

Analog ground

1.2V analog VDD input power supply from VDDCO (pin24) through external Ferrite bead

and capacitor.

No Connect

Port 1 physical receive (MDI) or transmit (MDIX) signal (+ differential)

Port 1 physical receive (MDI) or transmit (MDIX) signal (– differential)

Analog ground

Port 1 physical transmit (MDI) or receive (MDIX) signal (+ differential)

Port 1 physical transmit (MDI) or receive (MDIX) signal (– differential)

3.3V analog VDD input power supply with well decoupling capacitors.

3.3V analog VDD input power supply with well decoupling capacitors.

No Connect

No Connect

Analog ground

No Connect

No Connect

1.2 analog VDD input power supply from VDDCO (pin24) through external Ferrite bead and

capacitor.

Analog ground

No connect

No connect

Set physical transmits output current.

Pull-down this pin with a 3.01K 1% resistor to ground.

Analog ground

October 2007

14

M9999-102207-1.6

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