DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 66

• Manufacturer Part Number: DS21455
• Description: Network Controller & Processor ICs Quad E1-T1-J1 Single -Chip Transceiver (S
• Manufacturer: Maxim Integrated Products

Specifications of DS21455

• Product: Framer
• Number Of Transceivers: 4
• Data Rate: 64 Kbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 328 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: BGA

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 0/Transmit CRC-4 Enable (TCRC4).
Bit 1/Transmit G.802 Enable (TG802). See the Functional Timing Diagrams section for details.
Bit 2/Transmit HDB3 Enable (THDB3).
Bit 3/Transmit Signaling All Ones (TSA1).
Bit 4/Transmit International Bit Select (TSiS).
Bit 5/Transmit Unframed All Ones (TUA1).
Bit 6/Transmit Time Slot 16 Data Select (T16S). See the Transmit Signaling section for details.
Bit 7/Transmit Time Slot 0 Pass Through (TFPT).
0 = CRC-4 disabled
1 = CRC-4 enabled
0 = do not force TCHBLK high during bit 1 of time slot 26
1 = force TCHBLK high during bit 1 of time slot 26
0 = HDB3 disabled
1 = HDB3 enabled
0 = normal operation
1 = force time slot 16 in every frame to all ones
0 = sample Si bits at TSER pin
1 = source Si bits from TAF and TNAF registers (in this mode, E1TCR1.7 must be set to zero)
0 = transmit data normally
1 = transmit an unframed all one’s code at TPOSO and TNEGO
0 = time slot 16 determined by the SSIEx registers and the THSCS function in the PCPR register
1 = source time slot 16 from TS1 to TS16 registers
0 = FAS bits/Sa bits/Remote Alarm sourced internally from the TAF and TNAF registers
1 = FAS bits/Sa bits/Remote Alarm sourced from TSER
TFPT
7
0
T16S
E1TCR1
E1 Transmit Control Register 1
35h
6
0
TUA1
5
0
TSiS
4
0
66 of 270
TSA1
3
0
THDB3
2
0
TG802
1
0
TCRC4
0
0