AX88190AL datasheet(10/49 Pages) ASIX

10 / 49 page

AX88190A

PCMCIA Fast Ethernet MAC Controller

ASIX ELECTRONICS CORPORATION

GPIO3#

I/O

Default “1”. The pin reflects register offset 1Ah bit 3 inverted value.

GPIO2

I/O

Default “0”. The pin reflects register offset 1Ah bit 2 value.

GPIO1#

I/O

Default “1”. The pin reflects register offset 1Ah bit 1 inverted value.

GPIO0#

I/O

Default “1”. The pin reflects register offset 1Ah bit 0 inverted value.

Tab - 6 General Pursose I/O pins group

2.7 Miscellaneous pins group

SIGNAL

TYPE

PIN NO.

DESCRIPTION

LCLK/XTALIN

103

CMOS Local Clock : Typical a 25Mhz clock, +/- 100 ppm, 40%-60%

duty cycle. ( See application note also )

Crystal Oscillator Input : Typical a 25Mhz crystal, +/- 25 ppm can be

connected across XTALIN and XTALOUT.

XTALOUT

104

Crystal Oscillator Output : Typical a 25Mhz crystal, +/- 25 ppm can be

connected across XTALIN and XTALOUT. If a single-ended external

clock (LCLK) is connected to XTALIN, the crystal output pin should

be left floating.

CLKO

101

Clock Output : This clock is source from LCLK/XTALIN.

CLK_DIV3#

I/PU

Clock Devide 3 Enable : Active low to enable the devided 3 circuit.

That internally devides LCLK/XTALIN input frequeny by 3 and then

feed into internal circuit for system clock used.

Default value set to logic high, this function is disabled.

PPWDN

114

Phy Power Down : This pin connects to PHY chip power down mode

control input.

RESET

I/PD

127

Reset

Reset is active high then place AX88190A into reset mode

immediately. During Falling edge the AX88190A loads the EEPROM

data.

TEST#

I/PU

Test Pin : Active LOW

The pin is just for test mode setting purpose only. Must be pull high

when normal operation.

EEPROM SIZE

I/PU

EEPROM SIZE = 0 : 93C46 128 byte type EEPROM is used.

EEPROM SIZE = 1 : 93C56 256 byte type EEPROM is used.

N/A

46–48, 50–

53, 55-56,

No Connection : for manufacturing test only.

LVDD

44, 54,

100, 110,

126, 128

Power Supply : +3.3V DC.

HVDD

19, 29, 64,

Power Supply : +5V DC.

Note : for pure 3.3V single power solution, all the HVDD pin can

connect to +3.3V. Care should be taken that HVDD input power must

be greater or equal ( > = ) than LVDD.

VSS

11, 24, 34,

39, 40, 49,

59, 69, 81,

93, 102, 105,

119

Power Supply : +0V DC or Ground Power.

Tab - 7 Miscellaneous pins group

AX88190AL Datasheet(PDF) 10 Page - ASIX Electronics Corporation

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