DS33R11+ Maxim Integrated Products, DS33R11+ Datasheet - Page 255

• Manufacturer Part Number: DS33R11+
• Description: IC ETH TXRX T1/E1/J1 256-BGA
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of DS33R11+

• Protocol: T1/E1/J1
• Voltage - Supply: 1.8V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Drivers/receivers: -

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 5 – 7: Line Build-Out Select (L0 to L2). When using the internal termination, the user needs only to select
000 for 75Ω operation or 001 for 120Ω operation below. This selects the proper voltage levels for 75Ω or 120Ω
operation. Using TT0 and TT1 of the TR.LICR4 register, the user can then select the proper internal source
termination. Line build-outs 100 and 101 are for backwards compatibility with older products only.
E1 Mode
*TT0 and TT1 of LIC4 register must be set to 0 in this configuration.
T1 Mode
Bit 4: Receive Equalizer Gain Limit (EGL). This bit controls the sensitivity of the receive equalizer.
Bit 3: Jitter Attenuator Select (JAS)
Bit 2: Jitter Attenuator Buffer Depth Select (JABDS)
Bit 1: Disable Jitter Attenuator (DJA)
Bit 0: Transmit Power-Down (TPD)
L2
0
0
1
1
L2
0
0
0
0
1
1
1
1
L1
0
0
0
0
T1 Mode
0 = -36dB (long haul)
1 = -15dB (limited long haul)
0 = place the jitter attenuator on the receive side
1 = place the jitter attenuator on the transmit side
0 = 128 bits
1 = 32 bits (use for delay-sensitive applications)
0 = jitter attenuator enabled
1 = jitter attenuator disabled
0 = powers down the transmitter and tri-states the TTIP and TRING pins
1 = normal transmitter operation
L1
0
0
1
1
0
0
1
1
L0
0
1
0
1
L2
7
0
L0
75Ω normal
120Ω normal
75Ω with high return loss
120Ω with high return loss
0
1
0
1
0
1
0
1
TR.LIC1
Line Interface Control 1
78h
DSX-1 (0ft to 133ft) / 0dB CSU
DSX-1 (133ft to 266ft)
DSX-1 (266ft to 399ft)
DSX-1 (399ft to 533ft)
DSX-1 (533ft to 655ft)
-7.5dB CSU
-15dB CSU
-22.5dB CSU
L1
6
0
Application
Application
L0
5
0
*
*
255 of 344
EGL
0
4
E1 Mode
0 = -12dB (short haul)
1 = -43dB (long haul)
N (1)
N (1)
1:2
1:2
1:2
1:2
1:2
1:2
1:2
1:2
1:2
1:2
1:2
1:2
JAS
3
0
Return Loss
Return Loss
21dB
21dB
NM
NM
NM
NM
NM
NM
NM
NM
NM
NM
JABDS
2
0
Rt (1) (Ω)
Rt (1) (Ω)
11.6
6.2
0
0
0
0
0
0
0
0
0
0
DJA
1
0
TPD
0
0