XRT83SL28 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SL28' PDF : 47 Pages View PDF
xr
REV. 1.0.0
NAME
PIN
FIFOS
19
HW/Host
81
Reset
28
CHLB3
89
CHLB2
90
CHLB1
91
CHLB0
92
RLOS7
61
RLOS6
65
RLOS5
116
RLOS4
120
RLOS3
48
RLOS2
44
RLOS1
137
RLOS0
133
RCLK7
58
RCLK6
62
RCLK5
119
RCLK4
123
RCLK3
51
RCLK2
47
RCLK1
134
RCLK0
130
RPOS7
59
RPOS6
63
RPOS5
118
RPOS4
122
RPOS3
50
RPOS2
46
RPOS1
135
RPOS0
131
TYPE
I
I
I
I
O
XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
DESCRIPTION
FIFO Bit Depth Select Input
This pin is used to select the depth of the FIFO. By default, the FIFO is set to
32-Bit. To select a 64-Bit FIFO depth, this pin must be pulled "High". To meet
TBR12/13 applications, the FIFO size must be set to 64-bit.
NOTE: Internally pulled "Low" with a 50kΩ resistor.
Same as Host Mode.
Same as Host Mode.
Channel Loop Back Select
CHLB[3:0] are used to select a particular channel or all eight channels simulta-
neously for Loop Back mode. See pins LBM[1:0] for selecting various types of
Loop Back diagnostics.
"0000" = Channel 0
"0001" = Channel 1
"0010" = Channel 2
"0011" = Channel 3
"0100" = Channel 4
"0101" = Channel 5
"0110" = Channel 6
"0111" = Channel 7
"1111" = All Eight Channels
NOTE: CHLB3 (Pin 89) is internally pulled "High" with a 50kΩ Resistor.
Same as Host Mode.
O
Same as Host Mode.
O
Same as Host Mode.
11
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