Datasheet

DS26514 4-Port T1/E1/J1 Transceiver
19-5856; Rev 4; 5/11 196 of 305
Register Name:
RCBR1, RCBR2, RCBR3, RCBR4
Register Description:
Receive Channel Blocking Registers 1 to 4
Register Address:
0C4h, 0C5h, 0C6h, 0C7h + (200h x (n - 1)) : where n = 1 to 4
(MSB)
(LSB)
Bit #
7
6
5
4
3
2
1
0
Name
CH8
CH7
CH6
CH5
CH4
CH3
CH2
CH1
RCBR1
CH16
CH15
CH14
CH13
CH12
CH11
CH10
CH9
RCBR2
CH24
CH23
CH22
CH21
CH20
CH19
CH18
CH17
RCBR3
CH32 CH31 CH30 CH29 CH28 CH27 CH26
CH25
(F-bit)
RCBR4 (E1
Mode Only)*
Bits 7 to 0: Channel Blocking Control Bits for Receive Channels 1 to 32 (CH[1:32])
0 = Force the RCHBLKn pin to remain low during this channel time.
1 = Force the RCHBLKn pin high during this channel time.
*Note that RCBR4 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
RCHBLKn signal will pulse high during the F-bit time. In this mode RCBR4.1 to RCBR4.7 should be set to
0.
RCBR4.0 = 0, do not pulse RCHBLKn during the F-bit.
RCBR4.0 = 1, pulse RCHBLKn during the F-bit.
Register Name:
RSI1, RSI2, RSI3, RSI4
Register Description:
Receive-Signaling Reinsertion Enable Registers 1 to 4
Register Address:
0C8h, 0C9h, 0CAh, 0CBh + (200h x (n - 1)) : where n = 1 to 4
(MSB)
(LSB)
Bit #
7
6
5
4
3
2
1
0
Name
CH8
CH7
CH6
CH5
CH4
CH3
CH2
CH1
RSI1
CH16
CH15
CH14
CH13
CH12
CH11
CH10
CH9
RSI2
CH24
CH23
CH22
CH21
CH20
CH19
CH18
CH17
RSI3
CH32 CH31 CH30 CH29 CH28 CH27 CH26 CH25
RSI4 (E1
Mode Only)
Setting any of the CH[1:24] bits in the RSI1 through RSI4 registers will cause signaling data to be reinserted for the
associated channel. RSI4 is used for 2.048MHz backplane operation.