参数资料
型号: DS26303L-120+A3
厂商: Maxim Integrated Products
文件页数: 39/101页
文件大小: 0K
描述: IC LIU E1/T1/J1 3.3V 144-ELQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
类型: 线路接口装置(LIU)
驱动器/接收器数: 8/8
规程: T1/E1/J1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 144-LQFP 裸露焊盘
供应商设备封装: 144-LQFP 裸露焊盘
包装: 托盘
其它名称: 90-26303+1A3
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
42 of 101
Register Name:
MC
Register Description:
Master Clock Select Register
Register Address:
06h
Bit #
7
6
5
4
3
2
1
0
Name
PCLKI
TECLKE
CLKAE
MPS1
MPS0
FREQS
PLLE
Default
0
Bit 6: PLL Clock Input (PCLKI).
This bit selects the input into to the PLL.
0 = MCLK is used.
1 = RCLK[1:8] is used based on the selection in register CCR.
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 Table 5-13 for details.
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 Table 5-13 for details.
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
MPS1, MPS0
MCLK
(MHz/±50ppm)
FREQS
MODE
0
xx
1.544
x
T1
0
xx
2.048
x
E1
1
00
1.544
1
T1/J1 or E1
1
01
3.088
1
T1/J1 or E1
1
10
6.176
1
T1/J1 or E1
1
11
12.352
1
T1/J1 or E1
1
00
2.048
0
T1/J1 or E1
1
01
4.096
0
T1/J1 or E1
1
10
8.192
0
T1/J1 or E1
1
11
16.384
0
T1/J1 or E1
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