Datasheet

DS21352/DS21552
79 of 137
TDC1: TRANSMIT HDLC DS0 CONTROL REGISTER 1 (Address=92 Hex)
(MSB) (LSB)
TDS0E - TDS0M TD4 TD3 TD2 TD1 TD0
SYMBOL POSITION NAME AND DESCRIPTION
TDS0E TDC1.7
HDLC DS0 Enable.
0 = use the transmit HDLC controller for the FDL.
1 = use the transmit HDLC controller for one or more DS0 channels.
-TDC1.6Not Assigned. Should be set to 0.
TDS0M TDC1.5
DS0 Selection Mode.
0 = utilize the TD0 to TD4 bits to select which single DS0 channel to use.
1 = utilize the TCHBLK control registers to select which DS0 channels to use.
TD4 TDC1.4 DS0 Channel Select Bit 4. MSB of the DS0 channel select.
TD3 TDC1.3
DS0 Channel Select Bit 3.
TD2 TDC1.2
DS0 Channel Select Bit 2.
TD1 TDC1.1
DS0 Channel Select Bit 1.
TD0 TDC1.0 DS0 Channel Select Bit 0. LSB of the DS0 channel select.