ax88790 ASIX Electronics Corporation, ax88790 Datasheet - Page 11

• Manufacturer Part Number: ax88790
• Description: Pcmcia 10/100m Fast Ethernet Controller With Embedded Phy
• Manufacturer: ASIX Electronics Corporation

2.8 Miscellaneous pins group
LCLK/XTALIN
XTALOUT
CLKO25M
RESET
TEST[2:1]
IDDQ
BIST
FAST_MODE#
EEPROM_SIZE
ZVREG
VDD
VSS
VDDA
VSSA
VDDM
VSSM
VDDPD
VSSPD
VDDO
VSSO
Tab – 8 Miscellaneous pins group
SIGNAL
AX88790 L
TYPE
I/PU
I/PD
I/PD
I/PU
I/PU
O
O
O
P
P
P
P
P
P
P
P
P
P
I
I
53, 57, 104,
13, 27, 40,
14, 28, 34,
43, 52, 54,
63, 64, 94,
72, 75, 85,
86, 89, 90
PIN NO.
114, 126
105,115,
56, 69,
55, 68,
47, 65
73, 82
77, 93
127
79
80
44
46
45
59
58
92
76
78
81
91
3
CMOS Local Clock: Typical a 25Mhz clock, +/- 100 PPM, 40%-60%
duty cycle. The signal not supports 5 Volts tolerance ( See application
note also )
Crystal Oscillator Input: Typical a 25Mhz crystal, +/- 25 PPM can be
connected across XTALIN and XTALOUT.
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.
Clock Output: This clock is source from LCLK/XTALIN.
Reset
Reset is active high then place AX88790 into reset mode immediately.
During falling edge the AX88790 loads the power on setting data.
And, after the falling edge the AX88790 loads the EEPROM data.
Test Pins : Active high
These pins are just for test mode setting purpose only. Must be pull
down or keep no connection when normal operation.
For test only. Must be pulled down at normal operation.
For test only. Must be pulled down or keep no connection when normal
operation.
FAST_MODE : Active LOW
The pin is just for test mode only. Must be pulled high or keep no
connection when normal operation.
EEPROM SIZE = 0: 93C46 type 128 byte EEPROM is used.
EEPROM SIZE = 1: 93C56 type 256 byte EEPROM is used.
This sets the common mode voltage for 10Base-T and 100Base-TX
modes. It should be connected to the center tap of the transmit side of
the transformer
Power Supply: +3.3V DC.
Power Supply: +0V DC or Ground.
Power Supply for Analog Circuit: +3.3V DC.
Power Supply for Analog Circuit: +0V DC or Ground.
Powers the analog block around the transmit/receive area. This should
be connected to VDDA: +3.3V DC.
Powers the analog block around the transmit/receive area. This should
be connected to VSSA: +0V DC or Ground Power.
The Phase Detector (or PLL) power. This should be isolated with other
power: +3.3V DC.
The Phase Detector (or PLL) power. This should be isolated with other
power: +0V DC or Ground.
Power Supply for Transceiver Output Driver: +3.3V DC.
Power Supply for Transceiver Output Driver: +0V DC or Ground.
3-in-1 PCMCIA Fast Ethernet Controller
11
DESCRIPTION
ASIX ELECTRONICS CORPORATION