AX88190P datasheet(9/41 Pages) ASIX

9 / 41 page

AX88190

PCMCIA Fast Ethernet MAC Controller

ASIX ELECTRONICS CORPORATION

2.4 Modem interface pins group

Signal Name

Type

Pin No.

Description

MRDY

I/PU

118

Modem Ready : MRDY low indicates that modem is initializing the

modem after reset signal asserted or the modem is at SLEEP/STOP

mode.

MRESET#

117

Modem Reset :This signal asserts low to reset the modem chipset.

MDCS#

111

Modem Chip Select : This signal connected to modem chip select pin.

MPWDN

116

Modem Power Down : Rockwell modem chipset, this signal asserts

low to let modem chipset into power down mode. AT&T modem

chipset, this signal asserts high to let modem chipset into power down

mode.

MINT

I/PD

112

Modem Interrupt : This signal driven by modem chipset to active

interrupt.

MRIN#

I/PU

115

Ring Input :This signal is driven by DAA’s ring detect circuit. When

a telephone ringing signal is being received.

MAUDIO

I/PD

113

Modem Audio : This signal is passed to PCMCIA interface via SPKR.

Tab - 4 Modem interface signals group

2.5 SRAM Interface pins group

SIGNAL

TYPE

PIN NO.

DESCRIPTION

MEMA[15:1]

43, 45 – 48,

50 –53’

55 – 58,

60 – 61

SRAM Address :

MEMD[15:0]

I/O/PU

62 – 63,

65 – 68,

70 – 74,

76 – 80

SRAM Data :

MEMRD#

SRAM Read

MEMWR#

SRAM Write

Tab - 5 SRAM Interface pins group

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