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

XRT4000
Scenario 23
75
TXD
82
SCTE
78 TXD 97
TX1
77
98
79
96
TX2
80
95
RX1
RX2
100
RXD
93
RXC
TXC
RXC
RXD
HDLC (L)
Options
DTE
DCE
87
87
90
RX3
88
88
TX3
84
TXC
96 RXC 79
82
93
RX2
95
80
TX2
SCTE
97 RXD 78
100
75
RX1
98
77
TX1
TXD
T4000 (DTE)
T4000 (DCE)
HDLC (R)
Normal
Echo Mode
3 Clocks
2 Clocks
1 Clock (X.21)
No Loopback
Loopback
No Invert
Invert
Input Pin Settings (Scenario 23)
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
X
0
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
X
1
1
1
1
Rev. 1.00
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