ax88190a ASIX Electronics Corporation, ax88190a Datasheet - Page 7

• Manufacturer Part Number: ax88190a
• Description: Pcmcia 10/100m Fast Ethernet Mac Controller With Embedded Memory
• Manufacturer: ASIX Electronics Corporation

2.0 Signal Description
2.1 PCMCIA Bus Interface Signals Group
SA[9:0]
SD[15:0]
IREQ#
WAIT#
REG#
IORD#
IOWR#
OE#
WE#
IOIS16#
INPACK#
CE1#-CE2#
BVD1_STSCHG#
BVD2_SPKR#
Tab - 1 PCMCIA bus interface signals group
All pin names with the “#” suffix are asserted low.
The following abbreviations are used in following Tables.
The following terms describe the AX88190A pin-out:
SIGNAL
I/O
OD
O
I
AX88190A
Input
Output
Input/Output
Open Drain
TYPE
I/O
O
O
O
O
O
O
I
I
I
I
I
I
I
PIN NO.
20 – 23,
30 – 33,
25 – 38,
35 – 38
10 – 1
18, 17
125
123
120
124
121
122
12
15
14
16
13
PCMCIA Fast Ethernet MAC Controller
System Address : Signals SA[9:0] are address bus input lines which
enable direct address of up to 64K memory and I/O spaces on card.
System Data Bus : Signals SD[15:0] constitute the bi-directional data
bus.
Interrupt Request : IREQ# is asserted to indicate the host system that
the PC Card device requires host software service.
Wait : This signal is set low to insert wait states during Remote DMA
transfer.
Attribute Memory and I/O Space Select : When the REG# signal is
asserted, access is limited to Attribute Memory and to the I/O space.
I/O Read : The host asserts IORD# to read data from AX88190A I/O
space.
I/O Write : The host asserts IOWR# to write data into AX88190A I/O
space.
Output Enable : The OE# line is used to gate Memory Read data from
memory on PC Card
Write Enable : The WE# signal is used for strobing Memory Write
data into the memory on PC Card.
I/O is 16 Bit Port : The IOIS16# is asserted when the address at the
socket corresponds to an I/O address to which the card responds, and
the I/O port addressed is capable of 16-bit access.
Input Port Acknowledge : The signal is asserted when the AX88190A
is selected and can respond to and I/O read cycle at the address on the
address bus.
Card Enable : The CE1# enables even numbered address bytes and
CE2# enables odd numbered address bytes
Battery Voltage Detect 1 / Status Change
Battery Voltage Detect 2 / Audio speaker out
7
PU
PD
P
DESCRIPTION
ASIX ELECTRONICS CORPORATION
Pull Up
Pull Down
Power Pin