act7006 Aeroflex Circuit Technology, act7006 Datasheet - Page 25

• Manufacturer Part Number: act7006
• Description: Act7005/7006 Single Package Solution Dual Transceiver, Protocol, Subsystem
• Manufacturer: Aeroflex Circuit Technology

Aeroflex Circuit Technology
Signal Name
MASTER RESET
WT
RD
INTERRUPTS
A0 - A3
DS
DB0-DB15
16/8
Table 13 – Subsystems Interface Signals
Function
INPUT ADDRESS
A0 = LSB
A3 = MSB
These four signals provide the address codes that control the operation of
the interface.
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
I/O DATA BUS
Data Bus for all SUBSYSTEM READ and WRITE OPERATIONS.
When used in 8 BIT MODE the data bus must be connected as follows:
PROGRAMS INTERFACE FOR 8 BIT OR 16 BIT DATA BUSES
16/8 = LOW (0)
16/8 = HIGH (1)
SYSTEM RESET
When low resets all registers and INPUT/OUTPUT buffers. Minimum Low
Time for reset = 0.5 µsec.
WRITE STROBE
Must GO LOW together with DS to perform a WRITE OPERATION.
NOTE: RD MUST BE HIGH.
READ STROBE
Must GO LOW together with DS to perform a READ OPERATION.
NOTE: WT STROBE MUST BE HIGH.
Refer to DISCRETE INTERRUPT TABLE.
16 BIT MODE
DB0 = LSB
DB15 = MSB
DB0 TO DB8
DB1 TO DB9
DB2 TO DB10
DB3 TO DB11
16 BIT MODE
8 BIT MODE
DB4 TO DB12
DB5 TO DB13
DB6 TO DB14
DB7 TO DB15
8 BIT MODE
DB0/DB8 = LSB
25
DB7/DB15 = MSB
SCD7005 REV B 8/2/01
Plainview NY [phone]