TXC-03453BROG Transwitch Corporation, TXC-03453BROG Datasheet - Page 27

• Manufacturer Part Number: TXC-03453BROG
• Manufacturer: Transwitch Corporation

Specifications of TXC-03453BROG

• Screening Level: Industrial
• Package Type: BGA
• Lead Free Status / Rohs Status: Compliant

Symbol
INT/IRQ
DTACK
RAMCI
MOTO
RDY/
Proprietary TranSwitch Corporation Information for use Solely by its Customers
Lead No.
AB8
W9
Y8
Y9
I/O/P
O (T)
O (T)
I
I
LVCMOS
LVCMOS
LVTTL
LVTTL
Type
8mA
4mA
DATA SHEET
- 27 of 96 -
Ready (I mode) or Data Transfer Acknowledge
(M mode):
Intel Mode - A high is an acknowledgment from the
addressed memory map location that the transfer can be
completed. A low indicates that the TL3M has not com-
pleted the transfer cycle, and the microprocessor must
wait before latching read data or completing the write
cycle.
Motorola Mode - During a read cycle, a low signal indi-
cates the information on the data bus is valid. During a
write cycle, a low signal acknowledges the acceptance of
data.
Interrupt:
Intel Mode - A high on this output lead signals an inter-
rupt request to the microprocessor (active high).
Motorola Mode - A low on this lead signals an interrupt
request to the microprocessor (active low).
The interrupt lead state is also controlled by the control
bit states listed in the following table
(OC2H, bit 3)
RAM Clock Input: Clock input for the internal RAM. This
clock supports an arbitrator function for accessing the
internal RAM structure. This clock must operate between
19 and 35 MHz with a duty cycle of (50±10) percent. This
clock and the microprocessor timing signals may operate
asynchronously with respect to each other.
Motorola/Intel Microprocessor Select: A high selects
the Motorola microprocessor compatible bus interface. A
low selects the Intel microprocessor compatible bus inter-
face.
INTZN
X
0
1
(OC2H, bit 2)
Name/Function
INTEN
0
1
1
PRELIMINARY TXC-03453B-MB, Ed. 3
Interrupt Lead
High impedance state
Interrupt lead held to
the high-z state only
when inactive
Interrupt lead enabled for
normal operation
TXC-03453B
September 2003
TL3M