参数资料
型号: IDT82P2828BHG
厂商: IDT, Integrated Device Technology Inc
文件页数: 70/154页
文件大小: 0K
描述: IC LIU T1/J1/E1 28+1CH 640-PBGA
标准包装: 5
类型: 线路接口装置(LIU)
规程: E1
电源电压: 3.13 V ~ 3.47 V
安装类型: 表面贴装
封装/外壳: 640-BGA 裸露焊盘
供应商设备封装: 640-PBGA-EP(31x31)
包装: 托盘
其它名称: 82P2828BHG
IDT82P2828
28(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
Pin Description
22
February 6, 2009
Clock
MCLK
Input
AK19
MCLK: Master Clock Input
MCLK provides a stable reference timing for the IDT82P2828. MCLK should be a clock with +/
-32 ppm (in T1/J1 mode) or +/-50 ppm (in E1 mode) accuracy. The clock frequency of MCLK
is informed to the device by MCKSEL[3:0].
If MCLK misses (duty cycle is less than 30% for 10 s) and then recovers, the device will be
reset automatically.
MCKSEL[0]
MCKSEL[1]
MCKSEL[2]
MCKSEL[3]
Input
AF19
AF20
AF21
AF22
MCKSEL[3:0]: Master Clock Selection
These four pins inform the device of the clock frequency input on MCLK:
CLKT1
Output
AH18
CLKT1: 8 KHz / T1 Clock Output
The output on CLKT1 can be enabled or disabled, as determined by the CLKT1_EN bit (b1,
When the output is enabled, CLKT1 outputs an 8 KHz or 1.544 MHz clock, as selected by the
CLKT1 bit (b0, CLKG). The output is locked to MCLK.
When the output is disabled, CLKT1 is in High-Z state.
CLKE1
Output
AG18
CLKE1: 8 KHz / E1 Clock Output
The output on CLKE1 can be enabled or disabled, as determined by the CLKE1_EN bit (b3,
When the output is enabled, CLKE1 outputs an 8 KHz or 2.048 MHz clock, as selected by the
CLKE1 bit (b2, CLKG). The output is locked to MCLK.
When the output is disabled, CLKE1 is in High-Z state.
Name
I / O
Pin No.
Description
MCKSEL[3:0]*
Frequency (MHz)
0000
1.544
0001
1.544 X 2
0010
1.544 X 3
0011
1.544 X 4
0100
1.544 X 5
0101
1.544 X 6
0110
1.544 X 7
0111
1.544 X 8
1000
2.048
1001
2.048 X 2
1010
2.048 X 3
1011
2.048 X 4
1100
2.048 X 5
1101
2.048 X 6
1110
2.048 X 7
1111
2.048 X 8
Note:
0: GNDD
1: VDDIO
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