Datasheet

DS21Q59 Quad E1 Transceiver
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Register Name:
TAF
Register Description:
Transmit Align Frame Register
Register Address:
20 Hex
Bit # 7 6 5 4 3 2 1 0
Name Si 0 0 1 1 0 1 1
Note: This register must be programmed with the 7-bit FAS word. The DS21Q59 does not automatically set these bits.
NAME BIT FUNCTION
Si 7
International Bit
0 6
Frame Alignment Signal Bit. Set this bit = 0.
0 5
Frame Alignment Signal Bit. Set this bit = 0.
1 4
Frame Alignment Signal Bit. Set this bit = 1.
1 3
Frame Alignment Signal Bit. Set this bit = 1.
0 2
Frame Alignment Signal Bit. Set this bit = 0.
1 1
Frame Alignment Signal Bit. Set this bit = 1.
1 0
Frame Alignment Signal Bit. Set this bit = 1.
Register Name:
TNAF
Register Description:
Transmit Nonalign Frame Register
Register Address:
21 Hex
Bit # 7 6 5 4 3 2 1 0
Name Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8
Note: Bit 6 must be programmed to 1. The DS21Q59 does not automatically set this bit.
NAME BIT FUNCTION
Si 7
International Bit
1 6
Frame Nonalignment Signal Bit. Set this bit = 1.
A 5
Remote Alarm (Used to transmit the alarm.)
Sa4 4
Additional Bit 4
Sa5 3
Additional Bit 5
Sa6 2
Additional Bit 6
Sa7 1
Additional Bit 7
Sa8 0
Additional Bit 8