Datasheet

DS26521 Single T1/E1/J1 Transceiver
189 of 258
Register Name:
TIBOC
Register Description:
Transmit Interleave Bus Operation Control Register
Register Address:
188h
Bit # 7 6 5 4 3 2 1 0
Name — IBS1 IBS0 IBOSEL IBOEN DA2 DA1 DA0
Default 0 0 0 0 0 0 0 0
Bits 6 and 5: IBO Bus Size (IBS[1:0]). Indicates how many devices are on the bus.
IBS1 IBS0 BUS SIZE
0 0 2 devices on bus
0 1 4 devices on bus
1 0 8 devices on bus
1 1 Reserved for future use
Bit 4: Interleave Bus Operation Select (IBOSEL). This bit selects channel or frame interleave mode.
0 = Channel Interleave
1 = Frame Interleave
Bit 3: Interleave Bus Operation Enable (IBOEN).
0 = Interleave Bus Operation disabled
1 = Interleave Bus Operation enabled
Bits 2 to 0: Device Assignment Bits (DA[2:0]).
DA2 DA1 DA0 DEVICE POSITION
0 0 0 1st device on bus
0 0 1 2nd device on bus
0 1 0 3rd device on bus
0 1 1 4th device on bus
1 0 0 5th device on bus
1 0 1 6th device on bus
1 1 0 7th device on bus
1 1 1 8th device on bus
Register Name:
TDS0SEL
Register Description:
Transmit DS0 Channel Monitor Select Register
Register Address:
189h
Bit # 7 6 5 4 3 2 1 0
Name — — — TCM4 TCM3 TCM2 TCM1 TCM0
Default 0 0 0 0 0 0 0 0
Bits 4 to 0: Transmit Channel Monitor Bits (TCM[4:0]). TCM0 is the LSB of a 5-bit channel select that
determines which transmit channel data will appear in the
TDS0M register. Channels 1 to 32 are represented by a
5-bit BCD code from 0 to 31. TCM[4:0] = all zeros selects channel 1, TCM[4:0] = 11111 selects channel 32.