XRT4000 Datasheet, PDF (40/46 Pages) Exar Corporation – Universal Multiprotocol Serial Interface

XRT4000
Scenario 14
TXD
SCTE
TXC
RXC
RXD
HDLC (L)
Options
DTE
DCE
75
TX1
82
TX2
78
TXD
77
79
80
87
TXC
90
RX3
88
96
RXC
93
RX2
95
97
RXD
100
RX1
98
T4000 (DTE)
97
RX1
98
96
RX2
95
87
88
TX3
79
80
TX2
78
77
TX1
T4000 (DCE)
100
RXD
93
RXC
84
TXC
82
SCTE
75
TXD
HDLC (R)
Normal
Echo Mode
3 Clocks
2 Clocks
1 Clock (X.21)
No Loopback
Loopback
No Invert
Invert
Input Pin Settings (Scenario 14)
Pin Number
39
42
65
22
67
68
66
T4000 (DTE)
Name
DCE/DTE*
EC*
2CK/3CK*
LP*
CKINV*
DTINV*
EN_OSC*
State
0
1
1
1
0
1
1
Pin Number
39
42
65
22
67
68
66
T4000 (DCE)
Name
DCE/DTE*
EC*
2CK/3CK*
LP*
CKINV*
DTINV*
EN_OSC*
State
1
1
1
1
0
1
1
Rev. 1.00
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