XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 49
XRT75R12DIB-F
Manufacturer Part Number
XRT75R12DIB-F
Description
Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
Manufacturer
Exar Corporation
Datasheet
1.XRT75R12DIB-F.pdf
(133 pages)
Specifications of XRT75R12DIB-F
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Operating Supply Voltage
3.3 V to 5 V
Package / Case
TBGA-420
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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REV. 1.0.3
The Microprocessor Interface section supports communication between the local microprocessor (µP) and the
LIU. The XRT75R12D supports a parallel interface asynchronously or synchronously timed to the LIU. The
microprocessor interface is selected by the state of the Pmode input pin. Selecting the microprocessor inter-
face mode is shown in
The local µP configures the LIU by writing data into specific addressable, on-chip Read/Write registers. The
µP provides the signals which are required for a general purpose microprocessor to read or write data into
these registers. The µP also supports polled and interrupt driven environments. A simplified block diagram of
the microprocessor is shown in
F
7.0 MICROPROCESSOR INTERFACE BLOCK
IGURE
34. S
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
IMPLIFIED
Table
B
T
LOCK
ABLE
13.
D
13: S
Figure
IAGRAM OF THE
P
"High"
Addr[7:0]
"Low"
ELECTING THE
RESET
MODE
Pmode
D[7:0]
PCLK
34.
RDY
WR
INT
CS
RD
M
ICROPROCESSOR
Microprocessor
M
ICROPROCESSOR
Interface
45
M
ICROPROCESSOR
Asynchronous Mode
Synchronous Mode
I
NTERFACE
I
NTERFACE
M
B
ODE
LOCK
M
ODE
XRT75R12D
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