XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 45

• Manufacturer Part Number: XRT84L38IB
• Description: Network Controller & Processor ICs 8 Ch T1/E1 Framer
• Manufacturer: Exar Corporation

Specifications of XRT84L38IB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. 1.0.1
LIU CONTROL
(Framer Channel Number indicated by _n)
S
IGNAL
LOS_0
LOS_1
LOS_2
LOS_3
LOS_4
LOS_5
LOS_6
LOS_7
GPO7
GPO6
GPO5
GPO4
SDO1
SClk1
SDI1
CS1
N
AME
P
AA1
AB3
AF1
G4
M2
R1
K1
V2
P1
P2
P4
J4
IN
#
T
YPE
O
O
O
O
I
Loss of Signal Input—LIU Interface-Framer_n:
This input pin is intended to be connected to the RxLOS output pin of the LIU
associated with Framer_n. If the LIU IC detects an LOS condition and asserts
(toggles "High") this input pin, then the Receive Framer associated with
Channel_n will declare a LOS condition.
Asserting this input pin "High" will result in Framer_n asserting the RxLOS_n
output pin.
General Purpose Output pin/Chip Select Output pin:
The exact role of this output pin depends upon whether the LIU Controller block
is operating in the Hardware or HOST Mode.
Hardware Mode: GPO7
This pin is a general purpose output pin that is controlled by the contents of bit-
field 7, within the Line Control Register (Address = 00h, 02h).
HOST Mode:CS1
This pin is a chip select output pin that is asserted (toggles “Low”) following a
write operation to the LIU Access Register 1, associated with
7. This output pin is intended to be tied to the chip select input of an LIU (or
other peripheral device) that is configurable via a Microprocessor Serial Inter-
face. Once the HOST Mode serial port has completed its read or write opera-
tion, then it will negate (toggle "High") this output pin.
General Purpose Output pin/Serial Clock Output:
The exact role of this output pin depends upon whether the LIU Controller block
is operating in the Hardware or HOST Mode.
Hardware Mode: GPO6
This pin is a general purpose output pin that is controlled by the contents of bit-
field 6, within the Line Control Register (Address = 00h, 02h).
HOST Mode:SClk1
This pin functions as the Serial Clock output signal (SCLK), when the LIU Con-
troller Block is configured to operate in the HOST Mode
General Purpose Output pin/Serial Data Input bit 1:
The exact role of this output pin depends upon whether the LIU Controller block
is operating in the Hardware or HOST Mode.
Hardware Mode: GPO5
This pin is a general purpose output pin that is controlled by the contents of bit-
field 5, within the Line Control Register (Address = 00h, 02h).
HOST Mode:SDI1
This pin functions as the Serial Data Input (SDI) output pin (to the Microproces-
sor Serial Interface).
General Purpose Output pin/Serial Data Output bit 0:
The exact role of this output pin depends upon whether the LIU Controller block
is operating in the Hardware or HOST Mode.
Hardware Mode:
This pin is a general purpose output pin that is controlled by the contents of bit-
field 4, within the Line Control Register (Address = 00h, 02h).
HOST Mode:SDO1
This pin functions as the Serial Data Output (SDO) input pin (into the LIU Con-
troller Block).
25
GPO4
D
ESCRIPTION
OCTAL T1/E1/J1 FRAMER
framer 4, 5, 6 and
XRT84L38