DS26324GNA3+ Maxim Integrated Products, DS26324GNA3+ Datasheet - Page 26

• Manufacturer Part Number: DS26324GNA3+
• Description: IC LIU E1/T1/J1 3.3V 256-CSBGA
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS26324GNA3+

• Number Of Drivers/receivers: 16/16
• Protocol: LIN
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 256-CSBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 5-5. LIU Front-End Values
Tx Capacitance
Tx Protection
Rx Transformer RTR 1:1
Tx Transformer 1:2
Rx Transformer RTR 1:2
Tx Transformer 1:2
Tx Decoupling (TVDDn)
Tx Decoupling (TVDDn)
Rx Decoupling (AVDD)
Rx Decoupling (AVDD)
Rx Termination
Rx Termination RTR 1:1
Rx Termination RTR 1:2
Voltage Protection
1
5.4.3 Transmit Dual-Rail Mode
Transmit dual-rail mode consists of the TPOS, TNEG, and TCLK pins on the system side. NRZ data is sampled on
the falling edge of TCLK as shown in
B8ZS or HDB3 encoding is not available in transmit dual-rail mode. The data that appears on the TPOS and TNEG
pins is output on TTIP and TRING without any modification. The Single-Rail Mode Select Register
for selection of dual-rail or single-rail mode. The data that arrives at the TPOS and TNEG can be overwritten in the
maintenance mode by setting the BERT Control Register (BTCR).
5.4.4 Transmit Single-Rail Mode
Transmit single-rail mode consists of the TPOS and TCLK pins on the system side (TNEG is not used.). NRZ data
is sampled on the falling edge of TCLK as shown in
allowed. The TPOS data is encoded in AMI or B8ZS/HDB3 format on the TTIP and TRING pins after pulse
shaping. The Single-Rail Mode Select Register
data that arrives at the TPOS can be overwritten in the maintenance mode by setting in Bit Error Rate Tester
Control Register (BTCR).
5.4.5 Zero Suppression—B8ZS or HDB3
B8ZS coding is available when the device is in T1 mode (selected by TS2, TS1 and TS0 bits in the
B8ZS/HDB3 coding are enabled by default in single-rail mode. Setting the LCS bit in the
B8ZS/HDB3. Note that if the individual LIU is configured in E1 mode then HDB3 code substitution will be selected.
Bipolar violations can be inserted via the
B8ZS substitution is defined in ANSI T1.102 and HDB3 in ITU-T G.703 standards.
5.4.6 Transmit Power-Down
The transmitter will be powered down if the relevant bits in the
impedance when TPDE is set.
Only use if necessary for application.
MODE
COMPONENT
TVS1
TFr
TFr
C5
TFt
TFt
Dt
C1
C2
C3
C4
Rt
Rt
Ct
1
1
1
Figure
1
BEIR
9-12.
DS26324 3.3V, 16-Channel, E1/T1/J1 Short-Haul Line Interface Unit
560pF typical. Adjust for board parasitics for optimal return loss.
International Rectifier 11DQ04 or 10BQ060,
Motorola MBR0540T1
Pulse TX1475
Halo TG83-S005NU
Pulse T1124 (0°C to +70°C),
Pulse T1114 (-40°C to 85°C)
Common decoupling for all 16 channels = 68µF.
Recommended decoupling per channel = 0.1µF.
Common decoupling for all 16 channels = 68µF.
Decouple all six pins separately with a 0.1µF capacitor.
Rx capacitance for all 16 channels = 0.1µF.
Need two resistors = 60.4Ω ±1%.
Need two resistors = 15.0Ω ±1%.
SGS-Thomson SMLVT 3V3 (3.3V Transient Suppressor)
register only if B8ZS or HDB3 coding is turned off.
(SRMS)
Figure
26 of 120
is used for selection of dual-rail or single-rail mode. The
9-12. The zero substitution B8ZS or HDB3 encoding is
75Ω COAX, 120Ω TWISTED PAIR,
TPDE
100/110Ω TWISTED PAIR
are set. The TTIP/TRING outputs will be high
LCS
Register disables
(SRMS)
TS
register).
is used