参数资料
型号: IDT82P2828BHG
厂商: IDT, Integrated Device Technology Inc
文件页数: 139/154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
Programming Information
85
February 6, 2009
REFA - REFA Clock Sources Configuration Register
REFB - REFB Clock Sources Configuration Register
Address: 240H
Type: Read / Write
Default Value: 41H
Bit
Name
Description
7-
Reserved.
6
REFA_EN
This bit controls whether the output on the REFA pin is enabled.
0: The output is disabled. REFA is in High-Z state.
1: The output is enabled. (default)
5
CKA_T1E1
This bit defines the input clock frequency on the CLKA pin.
0: Input T1 clock. (default)
1: Input E1 clock.
4 - 0
REFA[4:0]
These bits select the clock source for REFA.
00000: Recovered clock of channel 0.
00001: Recovered clock of channel 1. (default)
00010: Recovered clock of channel 2.
......
11011: Recovered clock of channel 27.
11100: Recovered clock of channel 28.
11101 ~ 11111: The input on CLKA.
Address: 280H
Type: Read / Write
Default Value: 41H
Bit
Name
Description
7-
Reserved.
6
REFB_EN
This bit controls whether the output on the REFB pin is enabled.
0: The output is disabled. REFB is in High-Z state.
1: The output is enabled. (default)
5
CKB_T1E1
This bit defines the input clock frequency on the CLKB pin.
0: Input T1 clock. (default)
1: Input E1 clock.
4 - 0
REFB[4:0]
These bits select the clock source for REFB.
00000: Recovered clock of channel 0.
00001: Recovered clock of channel 1. (default)
00010: Recovered clock of channel 2.
......
11011: Recovered clock of channel 27.
11100: Recovered clock of channel 28.
11101 ~ 11111: The input on CLKB.
7654321
0
-
REFA_EN
CKA_T1E1
REFA4
REFA3
REFA2
REFA1
REFA0
765
43
21
0
-
REFB_EN
CKB_T1E1
REFB4
REFB3
REFB2
REFB1
REFB0
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