DS26518 Datasheet, PDF (237/312 Pages) Maxim Integrated Products – 8-Port T1/E1/J1 Transceiver

DS26518 8-Port T1/E1/J1 Transceiver
Register Name:
Register Description:
Register Address:
TCBR1, TCBR2, TCBR3, TCBR4
Transmit Channel Blocking Registers 1 to 4
1C4h, 1C5h, 1C6h, 1C7h + (200h x (n - 1)) : where n = 1 to 8
Bit #
Name
(MSB)
7
CH8
CH16
CH24
CH32
6
CH7
CH15
CH23
CH31
5
CH6
CH14
CH22
CH30
4
CH5
CH13
CH21
CH29
3
CH4
CH12
CH20
CH28
2
CH3
CH11
CH19
CH27
1
CH2
CH10
CH18
CH26
(LSB)
0
CH1
CH9
CH17
CH25
(F-bit)
TCBR1
TCBR2
TCBR3
TCBR4 (E1
Mode Only)*
Bits 7 to 0: Transmit Channels 1 to 32 Channel Blocking Control Bits (CH[1:32]).
0 = Force the TCHBLKn pin to remain low during this channel time.
1 = Force the TCHBLKn pin high during this channel time.
* Note that TCBR4 has two functions:
When 2.048MHz backplane mode is selected, this register allows the user to enable the channel blocking
signal for any of the 32 possible backplane channels.
When 1.544MHz backplane mode is selected, the LSB of this register determines whether or not the
TCHBLKn signal will pulse high during the F-bit time:
TCBR4.0 = 0, do not pulse TCHBLKn during the F-bit.
TCBR4.0 = 1, pulse TCHBLKn during the F-bit.
In this mode TCBR4.1 to TCBR4.7 should be set to 0.
Register Name:
Register Description:
Register Address:
THSCS1, THSCS2, THSCS3, THSCS4
Transmit Hardware-Signaling Channel Select Registers 1 to 4
1C8h, 1C9h, 1CAh, 1CBh + (200h x (n - 1)) : where n = 1 to 8
Bit #
Name
(MSB)
7
CH8
CH16
CH24
CH32
6
CH7
CH15
CH23
CH31
5
CH6
CH14
CH22
CH30
4
CH5
CH13
CH21
CH29
3
CH4
CH12
CH20
CH28
2
CH3
CH11
CH19
CH27
1
CH2
CH10
CH18
CH26
(LSB)
0
CH1
CH9
CH17
CH25
THSCS1
THSCS2
THSCS3
THSCS4
(E1 Mode
Only)*
Bits 7 to 0: Transmit Hardware-Signaling Channel Select for Channels 1 to 32 (CH[1:32]). These bits
determine which channels have signaling data inserted from the TSIGn pin into the TSERn PCM data.
0 = Do not source signaling data from the TSIGn pin for this channel.
1 = Source signaling data from the TSIGn pin for this channel.
* Note that THSCS4 is only used in 2.048MHz backplane applications.
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