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參數(shù)資料
| 型號： | 7005 |
| 廠商： | Aeroflex Inc. |
| 英文描述： | ACT7005/7006 Single Package Solution Dual Transceiver, Protocol, Subsystem |
| 中文描述： | ACT7005/7006單一封裝解決方案雙收發(fā)器，協(xié)議，子系統(tǒng) |
| 文件頁數(shù)： | 25/29頁 |
| 文件大?。?/td> | 452K |
| 代理商： | 7005 |
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Aeroflex Circuit Technology
SCD7005 REV B 8/2/01
Plainview NY (516) 694-6700
25
Signal Name
Function
A0 - A3
INPUT ADDRESS
A0 = LSB
A3 = MSB
These four signals provide the address codes that control the operation of
the interface.
DS
DEVICE SELECT
Used in conjunction with the address signals. The
input/output interface data bus will remain tri-stated
and no operation will be executed when this signal
is high, regardless of the state of the address signals.
DS = LOW (0) INTERFACE SELECTED
DS = HIGH (1) INTERFACE NOT SELECTED
DB0-DB15
I/O DATA BUS
Data Bus for all SUBSYSTEM READ and WRITE OPERATIONS.
16 BIT MODE
8 BIT MODE
When used in 8 BIT MODE the data bus must be connected as follows:
16/8
PROGRAMS INTERFACE FOR 8 BIT OR 16 BIT DATA BUSES
16/8 = LOW (0) 8 BIT MODE
16/8 = HIGH (1) 16 BIT MODE
MASTER RESET
SYSTEM RESET
When low resets all registers and INPUT/OUTPUT buffers. Minimum Low
Time for reset = 0.5 μsec.
WT
WRITE STROBE
Must GO LOW together with DS to perform a WRITE OPERATION.
NOTE: RD MUST BE HIGH.
RD
READ STROBE
Must GO LOW together with DS to perform a READ OPERATION.
NOTE: WT STROBE MUST BE HIGH.
INTERRUPTS
Refer to DISCRETE INTERRUPT TABLE.
Table 13 – Subsystems Interface Signals
DB0 = LSB
DB15 = MSB
DB0/DB8 = LSB
DB7/DB15 = MSB
DB0 TO DB8
DB1 TO DB9
DB2 TO DB10
DB3 TO DB11
DB4 TO DB12
DB5 TO DB13
DB6 TO DB14
DB7 TO DB15
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