TXC-03303AIPQ Transwitch Corporation, TXC-03303AIPQ Datasheet - Page 13

• Manufacturer Part Number: TXC-03303AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-03303AIPQ

• Lead Free Status / RoHS Status: Not Compliant

Note 1: When P1 and P0 are both set to 1 only registers 00H - 1FH are accessible, to maintain backwards
Note 2: When P1 = 1 and P0 = 0 all registers are accessible. Only address straps S6 and S7 are active.
Symbol
DTACK
RDY/
ALE
WR
P0
P1
compatibility with previous devices. Address straps S5 - S7 are active.
Pin No.
163
162
161
73
72
I/O/P
O
I
I
I
TTL8mA
TTLp
Type
TTL
TTL
- 13 -
Address Latch Enable (Multiplexed): An active high
enable signal generated by the microprocessor. The fall-
ing transition is used to store an address during a read/
write bus cycle.
Write (Intel/Multiplexed): Intel/Multiplexed - An active
low signal generated by the microprocessor for writing to
the M13E register locations. Motorola - not used.
Ready (Intel) or Data Transfer Acknowledge (Motor-
ola): Intel - The M13E is always ready. Connection to an
Intel microprocessor is optional. If connected, a pull-up
resistor is required. Motorola - During a read bus cycle, a
low signal indicates the information on the data bus is
valid. During a write bus cycle, a low signal acknowl-
edges the acceptance of data. A pull-up resistor is
required for this pin.
Microprocessor Interface Type Select: The type of
microprocessor interface selected by these two bits is
given in the table below:
The multiplexed interface consists of eight bidirectional
address/data leads, select, address latch enable, read,
and write.
The Intel compatible interface (80X86 family) consists of
eight address leads, eight bidirectional data leads, select,
read, write, and ready.
The Motorola compatible interface (680X0 family) con-
sists of eight address leads, eight bidirectional data
leads, select, read/write, and data transfer acknowledge.
P1
1
1
0
0
P0
1
0
0
1
Name/Function
Motorola Compatible
Intel Compatible
Multiplexed
Multiplexed
Interface
1
2
Ed. 4, August 1998
TXC-03303
TXC-03303-MB
M13E