參數(shù)資料
型號(hào)： AX88790L
廠商： ASIX Electronics Corporation
英文描述： 10/100BASE 3-in-1 PCMCIA Fast Ethernet Controller
中文描述： 一個(gè)10/100Base 3合1的PCMCIA快速以太網(wǎng)控制器
文件頁(yè)數(shù)： 7/60頁(yè)
文件大?。?/td> 633K
代理商： AX88790L
ASIX ELECTRONICS CORPORATION
7
AX88790 L 3-in-1 PCMCIA Fast Ethernet Controller
2.0 Signal Description
The following terms describe the AX88790 pin-out:
All pin names with the “#” suffix are asserted low.
The following abbreviations are used in following Tables.
I
Input
O
Output
I/O
Input/Output
OD
Open Drain
PU
PD
P
Pull Up
Pull Down
Power Pin
2.1 PCMCIA Bus Interface Signals Group
SIGNAL
TYPE
PIN NO.
SA[9:0]
I/PD
12 – 4
SD[15:0]
I/O/PD
23 – 26,
29 – 33,
35 – 39,
41 – 42
IREQ#
O
DESCRIPTION
15,
System Address: Signals SA[9:0] are address bus input lines which
enable direct address of up to 2K memory and I/O spaces on card.
System Data Bus: Signals SD[15:0] constitute the bi-directional data
bus.
16
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 AX88790 I/O
space.
I/O Write: The host asserts IOWR# to write data into AX88790 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 AX88790 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
WAIT#
O
2
REG#
I/PU
128
IORD#
I/PU
19
IOWR#
I/PU
18
OE#
I/PU
20
WE#
I/PU
17
IOIS16#
O
123
INPACK#
O
1
CE1#-CE2#
I/PU
22, 21
STSCHG#
SPKR#
O
O
124
125
Tab - 1 PCMCIA bus interface signals group
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