TXC-03305AIPQ Transwitch Corporation, TXC-03305AIPQ Datasheet - Page 18

• Manufacturer Part Number: TXC-03305AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-03305AIPQ

• Lead Free Status / RoHS Status: Not Compliant

TXC-03305-MB
Ed. 4, September 2000
M13X
TXC-03305
Symbol
INT/IRQ
RD/WR
DTACK
RDY/
SEL
ALE
WR
RD
Lead No.
BGA
A14
P7
R8
N7
B1
T8
Lead No.
PQFP
163
74
71
73
72
4
I/O/P
O
O
I
I
I
I
DATA SHEET
TTL8mA Ready (Intel) or Data Transfer Acknowledge
TTL8mA Interrupt Request: This is a tri-state interrupt request
Type
TTL
TTL
TTL
TTL
- 18 -
Select: A low enables data transfers between the
microprocessor and the M13X registers during a read/
write bus cycle.
Read (Intel/Multiplexed) or Read/Write
(Motorola):
Intel/Multiplexed - An active low signal generated by
the microprocessor for reading the M13X register
locations.
Motorola - An active high signal generated by the
microprocessor for reading the M13X register loca-
tions. An active low signal is used to write to the M13X
register locations.
Address Latch Enable (Multiplexed):
Multiplexed - An active high enable signal generated
by the microprocessor. The falling edge is used to
store an address during a read/write bus cycle.
Intel/Motorola - not used. This lead should be tied low
when not used.
Write (Intel/Multiplexed):
Intel/Multiplexed - An active low signal generated by
the microprocessor for writing to the M13X register
locations.
Motorola - not used. This lead should be tied high
when not used.
(Motorola):
Intel/Multiplexed - This output lead is not used, and it
is always high when the SEL lead is low, otherwise it is
tri-stated. Connection to an Intel microprocessor is
optional. If connected, a pull-up resistor is required.
Motorola - During a read bus cycle, a low signal indi-
cates the information on the data bus is valid. During a
write bus cycle, a low signal acknowledges the accep-
tance of data. A pull-up resistor is required for this
lead.
lead. This lead is tri-stated when not being driven
active. When this lead is driven active, the IPOLAL bit
(bit 6 in register 3DH) determines the polarity of this
lead. This lead will be driven active when an interrupt
request bit AND its corresponding interrupt request
mask bit are both set to a 1. An external pull-up or
pull-down resistor is required to pull this lead to the
proper inactive level when it is not being driven.
Name/Function