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XRT83SL28
REV. 1.0.0
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
NAME
PIN
TYPE
DESCRIPTION
FIFOS
19
I
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.
HW/Host
Reset
81
28
I
I
I
Same as Host Mode.
CHLB3
CHLB2
CHLB1
CHLB0
89
90
91
92
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.
RLOS7
RLOS6
RLOS5
RLOS4
RLOS3
RLOS2
RLOS1
RLOS0
61
65
O
O
O
Same as Host Mode.
Same as Host Mode.
Same as Host Mode.
116
120
48
44
137
133
RCLK7
RCLK6
RCLK5
RCLK4
RCLK3
RCLK2
RCLK1
RCLK0
58
62
119
123
51
47
134
130
RPOS7
RPOS6
RPOS5
RPOS4
RPOS3
RPOS2
RPOS1
RPOS0
59
63
118
122
50
46
135
131
11
EXAR [ EXAR CORPORATION ]
