DS21Q42T+ Maxim Integrated Products, DS21Q42T+ Datasheet - Page 70
![IC FRAMER ENHANCED T1 4X 128TQFP](/photos/6/82/68247/128-lqfp_21-0086d_sml.jpg)
DS21Q42T+
Manufacturer Part Number
DS21Q42T+
Description
IC FRAMER ENHANCED T1 4X 128TQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS21Q42T.pdf
(116 pages)
Specifications of DS21Q42T+
Controller Type
T1 Framer
Interface
Parallel/Serial
Voltage - Supply
2.97 V ~ 3.63 V
Current - Supply
75mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
128-TQFP, 128-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 70 of 116
- Download datasheet (950Kb)
TDC1: TRANSMIT HDLC DS0 CONTROL REGISTER 1 (Address = 92 Hex)
TDC2: TRANSMIT HDLC DS0 CONTROL REGISTER 2 (Address = 93 Hex)
TDS0E
(MSB)
(MSB)
TDB8
SYMBOL
SYMBOL
TDS0M
TDS0E
TDB8
TDB7
TDB6
TDB5
TDB4
TDB3
TDB2
TDB1
TD4
TD3
TD2
TD1
TD0
-
TDB7
-
POSITION
POSITION
TDC1.7
TDC1.6
TDC1.5
TDC1.4
TDC1.3
TDC1.2
TDC1.1
TDC1.0
TDC2.7
TDC2.6
TDC2.5
TDC2.4
TDC2.3
TDC2.2
TDC2.1
TDC2.0
TDS0M
TDB6
NAME AND DESCRIPTION
HDLC DS0 Enable.
0 = use transmit HDLC controller for the FDL.
1 = use transmit HDLC controller for one or more DS0 channels.
Not Assigned. Should be set to 0.
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.
DS0 Channel Select Bit 4. MSB of the DS0 channel select.
DS0 Channel Select Bit 3.
DS0 Channel Select Bit 2.
DS0 Channel Select Bit 1.
DS0 Channel Select Bit 0. LSB of the DS0 channel select.
NAME AND DESCRIPTION
DS0 Bit 8 Suppress Enable. MSB of the DS0. Set to one to
stop this bit from being used.
DS0 Bit 7 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 6 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 5 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 4 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 3 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 2 Suppress Enable. Set to one to stop this bit from
being used.
DS0 Bit 1 Suppress Enable. LSB of the DS0. Set to one to
stop this bit from being used.
TDB5
TD4
70 of 116
TDB4
TD3
TDB3
TD2
TDB2
TD1
(LSB)
(LSB)
TDB1
TD0
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