Rainbow Electronics DS21458 - Manual (Page 115)

DS21455/DS21458 Quad T1/E1/J1 Transceivers
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Register Name:
TCBR3
Register Description: Transmit Channel Blocking Register 3
Register Address: 8Eh
Bit
# 7 6 5 4 3 2 1 0
Name CH24 CH23 CH22 CH21 CH20 CH19 CH18 CH17
Default
0 0 0 0 0 0 0 0
Bits 0 to 7/Transmit Channels 17 to 24 Channel Blocking Control Bits (CH17 to CH24).
0 = force the TCHBLK pin to remain low during this channel time
1 = force the TCHBLK pin high during this channel time
Register Name:
TCBR4
Register Description: Transmit Channel Blocking Register 4
Register Address: 8Fh
Bit
# 7 6 5 4 3 2 1 0
Name CH32 CH31 CH30 CH29 CH28 CH27 CH26 CH25
Default
0 0 0 0 0 0 0 0
Bits 0 to 7/Transmit Channels 25 to 32 Channel Blocking Control Bits (CH25 to CH32).
0 = force the TCHBLK pin to remain low during this channel time
1 = force the TCHBLK pin high during this channel time