DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 166

• 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 0–5/Gain Control Bits 0–5 (GC0–GC5). The GC0 through GC5 bits control the gain setting automatic gain control is
disabled. Use the tables below for setting the recommended values. The LB (line build-out) column refers to the value in the
L0–L2 bits in LIC1 (Line Interface Control 1) register.
Bit 6/Automatic Gain Control Disable (AGCD).
Bit 7/Unused, must be set to zero for proper operation.
T1, Impedance Match Off
E1, Impedance Match Off
T1, Impedance Match On
E1, Impedance Match On
NETWORK MODE
0 = use Transmit AGC, TLBC bits 0–5 are “don’t care”
1 = do not use Transmit AGC, TLBC bits 0–5 set nominal level
—
7
0
AGCD
TLBC
Transmit Line Build-Out Control
7Dh
6
0
LB
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
4
5
1
2
GC5
5
0
GC5
1
0
0
1
1
1
0
1
0
0
0
0
1
1
0
1
1
1
1
1
0
0
GC4
4
0
GC4
0
1
1
0
0
0
1
1
1
1
1
1
0
0
0
1
0
0
0
0
1
1
166 of 270
GC3
GC3
0
1
1
0
0
0
0
1
1
0
0
1
0
0
1
1
0
0
1
1
1
1
3
0
GC2
1
0
0
0
1
1
0
1
1
1
1
0
0
0
1
1
0
0
0
0
0
0
GC2
2
0
GC1
1
1
1
0
1
1
1
1
1
0
0
1
1
0
0
1
0
0
1
0
1
1
GC1
1
0
GC0
0
1
0
0
1
1
1
1
0
1
1
0
0
0
0
1
1
1
0
0
0
0
GC0
0
0