DS26303LN-120+ Maxim Integrated Products, DS26303LN-120+ Datasheet - Page 42

• Manufacturer Part Number: DS26303LN-120+
• Description: IC LIU E1/T1/J1 3.3V 144-ELQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS26303LN-120+

• Number Of Drivers/receivers: 8/8
• Protocol: T1/E1/J1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP Exposed Pad, 144-eLQFP, 144-HLQFP
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 6: PLL Clock Input (PCLKI). This bit selects the input into to the PLL.
Bit 5: T1/E1 Clock Enable (TECLKE). When this bit is set the TECLK output is enabled. If not set TECLK is
disabled and the TECLK output is an RLOS output. TECLK requires PLLE to be set for correct functionality.
Bit 4: Clock A Enable (CLKAE). When this bit is set the CLKA output is enabled. If not set, CLKA is disabled to tri-
state. CLKA requires PLLE to be set for correct functionality.
Bits 3 and 2: Master Period Select [1:0] (MPS[1:0]). These bits select the external MCLK frequency for the
DS26303. See
Bit 1: Frequency Select (FREQS). In conjunction with MPS[1:0], this bit selects the external MCLK frequency for
the DS26303. If this bit is set, the external master clock can be 1.544MHz or a multiple thereof. If reset, the
external master clock can be 2.048MHz or a multiple thereof. See
Bit 0: Phase Lock Loop Enable (PLLE). When this bit is set the phase lock loop is enabled. If reset, MCLK is the
applied input clock.
Table 5-13. MCLK Selections
PLLE
0
0
1
1
1
1
1
1
1
1
0 = MCLK is used.
1 = RCLK[1:8] is used based on the selection in register CCR.
Table 5-13
—
7
0
MPS1, MPS0
00
01
10
11
00
01
10
11
xx
xx
PCLKI
for details.
6
0
MC
Master Clock Select Register
06h
(MHz/±50ppm)
TECLKE
12.352
16.384
MCLK
1.544
2.048
1.544
3.088
6.176
2.048
4.096
8.192
5
0
CLKAE
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
42 of 101
4
0
FREQS
x
x
1
1
1
1
0
0
0
0
MPS1
Table 5-13
3
0
T1/J1 or E1
T1/J1 or E1
T1/J1 or E1
T1/J1 or E1
T1/J1 or E1
T1/J1 or E1
T1/J1 or E1
T1/J1 or E1
MODE
for details.
E1
T1
MPS0
2
0
FREQS
1
0
PLLE
0
0