DS3112+W Maxim Integrated Products, DS3112+W Datasheet - Page 72

• Manufacturer Part Number: DS3112+W
• Description: IC MUX T3/E3 3.3V 256-PBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS3112+W

• Controller Type: Framer, Multiplexer
• Interface: Parallel/Serial
• Voltage - Supply: 3.135 V ~ 3.465 V
• Current - Supply: 150mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-PBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Note: Bits that are underlined are read-only; all other bits are read-write.
Bits 0 to 15: T1/E1 Diagnostic Loopback Enable for Ports 1 to 16 (DLB1 to DLB16). These bits enable or
disable the T1/E1 Diagnostic Loopback (DLB). See the block diagrams in Section
loopback. DLB1 corresponds to T1/E1 Port 1, DLB2 corresponds to T1/E1 Port 2, and so on. If the device is
configured in Low-Speed T1/E1 Port Loop Timed mode (if LLTM bit in the MC1 register is set to a one) then only
data will be looped back—the clock will not be looped back. Since ports 4, 8, 12, 16, 20, 24, and 28 are not active
in the G.747 mode, the DLB4, DLB8, DLB12, and DLB16 bits have no effect in the G.747 mode.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Note: Bits that are underlined are read-only; all other bits are read-write.
Bits 17 to 28: T1 Diagnostic Loopback Enable for Ports 17 to 28 (DLB17 to DLB28). These bits enable or
disable the T1 Diagnostic Loopback (DLB). See the block diagrams in Section
loopback. DLB1 corresponds to T17 Port 17, DLB18 corresponds to T1 Port 18, and so on. Since ports 17 to 28 are
not active in the E3 mode, these bits have no effect in the E3 mode. Since ports 4, 8, 12, 16, 20, 24, and 28 are not
active in the G.747 Mode, the DLB20, DLB24 and DLB28 bits have no affect in the G.747 mode. If the device is
configured in Low-Speed T1/E1 Port Loop Timed mode (if LLTM bit in the MC1 register is set to a one), then
only data will be looped back, the clock will not be looped back.
0 = disable loopback
1 = enable loopback
0 = disable loopback
1 = enable loopback
DLB16
DLB24
DLB8
15
15
—
—
7
0
0
7
0
DLB15
DLB23
DLB7
14
14
—
—
6
0
0
6
0
T1E1DLB1
T1/E1 Diagnostic Loopback Control Register 1
54h
T1E1DLB2
T1/E1 Diagnostic Loopback Control Register 2
56h
DLB14
DLB22
DLB6
13
13
—
—
5
5
0
0
0
DLB13
DLB21
72 of 133
DLB5
12
12
—
—
4
0
0
4
0
DLB12
DLB20
DLB28
DLB4
11
11
3
3
0
0
0
0
DLB11
DLB19
DLB27
DLB3
10
10
2
0
0
2
0
0
1
1
for a visual description of this
for a visual description of this
DLB10
DLB18
DLB26
DLB2
1
9
1
9
0
0
0
0
DLB17
DLB25
DLB1
DLB9
DS3112
0
0
8
0
0
0
8
0