参数资料
型号: IDT82V3355TFG
厂商: IDT, Integrated Device Technology Inc
文件页数: 89/135页
文件大小: 0K
描述: IC PLL WAN SYNC ETH 64-TQFP
标准包装: 1
类型: 时钟/频率发生器,多路复用器
PLL:
主要目的: 以太网,SONET/SDH,Stratum
输入: CMOS,LVDS,PECL
输出: CMOS,LVDS,PECL
电路数: 1
比率 - 输入:输出: 3:2
差分 - 输入:输出: 是/是
频率 - 最大: 622.08MHz
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-TQFP(10x10)
包装: 托盘
其它名称: 82V3355TFG
IDT82V3355
SYNCHRONOUS ETHERNET WAN PLL
Programming Information
57
May 19, 2009
MON_SW_PBO_CNFG - Frequency Monitor, Input Clock Selection & PBO Control
Address: 0BH
Type: Read / Write
Default Value: 100X01X1
Bit
Name
Description
7
FREQ_MON_CLK
The bit selects a reference clock for input clock frequency monitoring.
0: The output of T0 DPLL.
1: The master clock. (default)
6
LOS_FLAG_TO_TDO
The bit determines whether the interrupt of T0 selected input clock fail - is reported by the TDO pin.
0: Not reported. TDO pin is used as JTAG test data output which complies with IEEE 1149.1. (default)
1: Reported. TDO pin mimics the state of the T0_MAIN_REF_FAILED bit (b6, 0EH) and does not strictly comply with IEEE
1149.1.
5
ULTR_FAST_SW
This bit determines whether the T0 selected input clock is valid when missing 2 consecutive clock cycles or more.
0: Valid. (default)
1: Invalid.
4EXT_SW
This bit determines the T0 input clock selection.
0: Forced selection or Automatic selection, as controlled by the T0_INPUT_SEL[3:0] bits (b3~0, 50H).
1: External Fast selection.
The default value of this bit is determined by the FF_SRCSW pin during reset.
3
PBO_FREZ
This bit is valid only when the PBO is enabled by the PBO_EN bit (b2, 0BH). It determines whether PBO is frozen at the cur-
rent phase offset when a PBO event is triggered.
0: Not frozen. (default)
1: Frozen. Further PBO events are ignored and the current phase offset is maintained.
2
PBO_EN
This bit determines whether PBO is enabled when the T0 selected input clock switch or the T0 DPLL exiting from Holdover
mode or Free-Run mode occurs.
0: Disabled.
1: Enabled. (default)
1-
Reserved.
0
FREQ_MON_HARD_EN
This bit determines whether the frequency hard alarm is enabled when the frequency of the input clock with respect to the
reference clock is above the frequency hard alarm threshold. The reference clock can be the output of T0 DPLL or the mas-
ter clock, as determined by the FREQ_MON_CLK bit (b7, 0BH).
0: Disabled.
1: Enabled. (default)
76
5
4321
0
FREQ_MON_C
LK
LOS_FLAG_TO
_TDO
ULTR_FAST_SW
EXT_SW
PBO_FREZ
PBO_EN
-
FREQ_MON_H
ARD_EN
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