DS2149 MAXIM [Maxim Integrated Products], DS2149 Datasheet - Page 11

• Manufacturer Part Number: DS2149
• Description: 5V T1/J1 Line Interface Unit
• Manufacturer: MAXIM [Maxim Integrated Products]

CR2 (B010001): Control Register 2
MSb
Table 4-F. Data Pattern Selection
CR3 (B010010): Control Register 3
EQZMON20
EQZMON26
RESET
JA6HZ
SYMBOL
SYMBOL
PAT0
ENLOOP
MSb
RESET
JA6HZ
LIRST
JA128
TAOZ
PAT1
PAT0
0
0
1
1
TAIS
TPD
ALB
RLB
LLB
—
PAT1
PAT1
TPD
0
1
0
1
POSITION
POSITION
CR3.7
CR3.6
CR3.5
CR3.4
CR3.3
CR3.2
CR3.1
CR3.0
CR2.7
CR2.6
CR2.5
CR2.4
CR2.3
CR2.2
CR2.1
CR2.0
TPOS/TNEG
Transmit QRSS
In-band loop-up 00001
In-band loop-down 001
PAT0
—
DATA SOURCE
0 = Set bandwidth of jitter attenuator to 3Hz
1 = Set bandwidth of jitter attenuator to 6Hz; not available if
JA128 = 1
0 = Enable transmitter outputs
1 = Disable transmitter outputs
—
0 = Normal receiver operation
1 = Add 20dB of resistive gain to inbound signal
0 = Normal receiver operation
1 = Add 26dB of resistive gain to inbound signal
0 = Jitter attenuator buffer depth = 32 bits
1 = Jitter attenuator buffer depth = 128 bits
0 = Normal operation
1 = Reset the receive LIU state machine
0 = Disable transmit alternate 1s and 0s
1 = Enable transmit alternate 1s and 0s
Resets device states and clears all registers.
Selects output data pattern
Selects output data pattern
0 = Transmit data normally
1 = Transmit unframed all ones
0 = Disable in-band loop-code detection
1 = Enable in-band loop-code detection
0 = Disable analog loopback
1 = Enable analog loopback
0 = Disable local loopback
1 = Enable local loopback
0 = Disable remote loopback
1 = Enable remote loopback
EQZMON20
TAIS
ENLOOP
EQZMON26
11 of 32
FUNCTION
FUNCTION
(Table
(Table
ALB
4-F).
4-F).
JA128
LLB
LIRST
RLB
TAOZ
LSb
LSb