參數(shù)資料
型號(hào)： MSM60804GS-K4
廠商： OKI ELECTRIC INDUSTRY CO LTD
元件分類(lèi)： 總線控制器
英文描述： PCMCIA BUS CONTROLLER, PQFP208
封裝： 28 X 28 MM, 0.50 MM PITCH, PLASTIC, QFP-208
文件頁(yè)數(shù)： 3/54頁(yè)
文件大小： 978K
代理商： MSM60804GS-K4
9
MSM60804
Semiconductor
Symbol
I/O
Pin
Drive current
(mA)
Description
I-pu
4
ABV1, BBV1
ABV2, BBV2
—
I-pu
2
AWAT, BWAT
—
I-pu
2
ARDY, BRDY
—
I-pu
2
AWP, BWP
—
TO
52
AA [25 : 0]
BA [25 : 0]
2
I/O
32
AD [15 : 0]
BD [15 : 0]
2
TO
4
ACE1, ACE2
BCE1, BCE2
2
TO
2
AREG, BREG
2
PCMCIA Card Socket Interface
Battery Voltage Detect
These signals are generated by the memory card as an indication of its
battery condition. The status of these pins is reflected in the card status
register. The status change of these pins is available for an interrupt request
using the register.
Status Change
When I/O interface is selected, BV1 signal is replaced by an active-low card
status change (
STSCHG). The status of this pin is reflected in the interface
status register. The status change of this pin is available as an interrupt
request by the register.
Speaker
In the I/O PC card, BV2 is replaced as an active-low audio digital
wavefrom 1 (
SPKR). It is connected to the speaker out pin
(
SPKR or SEL0) to drive a host speaker.
Bus Cycle Wait
An active-low Wait Request signal, requesting a bus cycle wait
signal from a PC card to the host system.
Ready/Busy/Interrupt Request
In memory Card mode, this signal is set active high to tell the host
system that the memory PC card is ready to accept a next bus cycle.
While low, this signal indicates that the memory PC card is busy
processing previous bus cycle and not available to execute a next
bus cycle. The status of this pin is reflected in the register.
The status change of this pin can be used as an interrupt request
by reading the interface status register.
Write-protect/16-bit I/O-Access
In memory Card mode, these pins detect the state of the Write Protect
switch of a PC card. This signal, when active high, indicates the
memory PC card is write-protected. To make a memory PC card
without a Write Protect switch writable, these pins are grounded.
To make a memory PC card read-only, these pins are connected to
VCC. In I/O Card mode, these pins are active low to indicate 16-bit
I/O accessing. (
IOIS16)
Card Address Bus
This bus enables the PCIC to directly access the 64M-byte memory
address space on the card.
Card Data Bus
A bus for transferring 16-bit data to and from the PC card.
Card Enable
These signals enable setting of 8-bit or 16-bit accessing to the PC
card and enable odd-numbered or even-numbered-address bytes.
These signals are combined with A0 to determine a method to access
the PC card. The
CE1 or CE2 output is enabled according to the
register setting or
IOIS16 setting.
Attribute Memory Select
When this signal is active low, access is limited Attribute Memory. When
this signal is high, Common Memory Access mode is set. In Common
Memory Access mode, accessing to the I/O PC card is disabled.
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