參數(shù)資料
型號(hào)： MB89374
廠商： Fujitsu Limited
英文描述： Data Link Controller (DLC)(數(shù)據(jù)鏈接控制器)
中文描述： 數(shù)據(jù)鏈路控制器（金剛石）（數(shù)據(jù)鏈接控制器）
文件頁(yè)數(shù)： 6/45頁(yè)
文件大?。?/td> 328K
代理商： MB89374
6
MB89374
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Pin No.
DIP
Symbol
I/O
Level*
Description
QFP
5
24
WR#/R/W#
I
—
Write or read/write pin:
This pin serves as the WR# input pin in the MBL8086/88
mode. A LOW level is input to this pin when writing to the
registers in the DLC. This pin serves as the R/W# input pin
in the GMICRO
mode. It determines the data direction when
accessing the registers in the DLC.
Chip-select pin:
A LOW level is input to this pin when accessing the registers
in the DLC.
CPU-interface mode-setting pin:
This pin is set to the GMICRO mode when the input level is
LOW, and to the MBL8086/88 mode when the input level is
HIGH. The pin input level must be fixed to LOW or HIGH.
6
26
CS#
I
—
2
21
FORMAT#
I
—
13 to
20
33 to
36,
38 to 41
D7 to D0
I/O
Hi-Z
Data-bus (tristate) pins:
These pins are used to input and output 8-bit data.
7 to 11 27 to 31
A4 to A0
I
—
Address pins:
These pins are used to input addresses to select the
registers in the DLC.
Interrupt-request pin:
This pin is used to generate HIGH interrupt requests by
using bits other than the BRG2OUT bit of the BRG2 status
register (B2SR) as interrupt trigger bits.
Interrupt-request pin:
This pin is used to generate HIGH interrupt requests by
using the BRG2OUT bit of the BRG2 status register (B2SR)
as the interrupt trigger bit.
Receive DMA-request or port-output 3 pin:
The receive DMA-request pin or port-output pin is selected
by the RxD/I bit of the receive interrupt enable register
(RxIER). If this pin is used as the RxDRQ pin, it outputs a
HIGH level to request DMA transfer of receive data. If this
pin is used as the PO3 pin, it outputs a HIGH level when the
PO3 bit of the port register (PORTR) is 1, and a LOW level
when the PO3 bit is 0.
Transmit DMA-request or port-output 2 pin:
The transmit DMA-request pin or port-output pin is selected
by the TxD/I bit of the transmit interrupt enable register
(TxIER). If this pin is used as the TxDRQ pin, it outputs a
HIGH level to request the DMA transfer of transmit data. If
this pin is used as the PO2 pin, it outputs a HIGH level when
the PO2 bit of the port register (PORTR) is 1, and a LOW
level when the PO2 bit is 0.
35
10
IRQ
O
L
37
12
IRQT
O
L
39
15
R
X
DRQ/PO3
O
L
38
14
T
X
DRQ/PO2
O
L
Signals suffixed by the symbol # are negative logic.
* :Pin output level when reset
相關(guān)PDF資料
PDF描述
MB89470 8-bit Proprietary Microcontroller
MB89475 8-bit Proprietary Microcontroller
MB89475PFM 8-bit Proprietary Microcontroller
MB89475PFV 8-bit Proprietary Microcontroller
MB89475P-SH 8-bit Proprietary Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB89470 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89475 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89475PFM 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89475PFV 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89475P-SH 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
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