XRT83SH38IB-F View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SH38IB-F' PDF : 78 Pages View PDF
REV. 1.0.7
SERIAL PORT AND JTAG
XRT83SH38
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
SIGNAL NAME
SER_PAR
SCLK
SDI
SDO
JTAGtip
JTAGring
TDO
TDI
TCK
TMS
NC
BGA
LEAD #
TYPE
DESCRIPTION
P18
I Serial/Parallel Select Input (Host Mode Only)
This pin is used in the Host mode to select between the parallel microprocessor
or serial interface. By default, the Host mode operates in the parallel micropro-
cessor mode. To configure the device for a serial interface, this pin must be
pulled "HIgh".
NOTE: Internally pulled “Low” with a 50kΩ resistor.
T13
I Serial Clock Input (Host Mode Only)
If Pin SER_PAR is pulled "High", this input pin is used the timing reference for
the serial microprocessor interface. See the Microprocessor Section of this
datasheet for details.
C10
I Serial Data Input (Host Mode Only)
If Pin SER_PAR is pulled "High", this input pin from the serial interface is used
to input the serial data for Read and Write operations. See the Microprocessor
Section of this datasheet for details.
R7
O Serial Data Output (Host Mode Only)
If Pin SER_PAR is pulled "High", this output pin from the serial interface is used
to read back the regsiter contents. See the Microprocessor Section of this
datasheet for details.
E18
Analog JTAG Positive Pin
B18
Analog JTAG Negative Pin
B1
Test Data Out
This pin is used as the output data pin for the boundary scan chain.
R1
Test Data In
This pin is used as the input data pin for the boundary scan chain.
N1
Test Clock Input
This pin is used as the input clock source for the boundary scan chain.
E1
Test Mode Select
This pin is used as the input mode select for the boundary scan chain.
A1
**** No Connect Pins
A18
N18
P18
V1
V18
16
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