参数资料
型号: ICS1893BFLFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 43/133页
文件大小: 0K
描述: PHYCEIVER LOW PWR 3.3V 48-SSOP
标准包装: 1
系列: PHYceiver™
类型: PHY 收发器
规程: MII
电源电压: 3.14 V ~ 3.47 V
安装类型: 表面贴装
封装/外壳: 48-BSSOP(0.295",7.50mm 宽)
供应商设备封装: 48-SSOP
包装: 标准包装
产品目录页面: 1252 (CN2011-ZH PDF)
其它名称: 800-1017-6
Chapter 4 Operating Modes Overview
ICS1893BF, Rev. F, 5/13/10
May, 2010
17
ICS1893BF Data Sheet Rev. F - Release
Copyright 2009, IDT, Inc.
All rights reserved.
4.1 Reset Operations
This section first discusses reset operations in general and then specific ways in which the ICS1893BF can
be configured for various reset options.
4.1.1 General Reset Operations
The following reset operations apply to all the specific ways in which the ICS1893BF can be reset, which
4.1.1.1 Entering Reset
When the ICS1893BF enters a reset condition (either through hardware, power-on reset, or software), it
does the following:
1. Isolates the MAC Interface input pins
2. Drives all MAC Interface output pins low
3. Tri-states the signals on its Twisted-Pair Transmit pins (TP_TXP and TP_TXN)
4. Initializes all its internal modules and state machines to their default states
5. Enters the power-down state
6. Initializes all internal latching low (LL), latching high (LH), and latching maximum (LMX) Management
Register bits to their default values
4.1.1.2 Exiting Reset
When the ICS1893BF exits a reset condition, it does the following:
1. Exits the power-down state
2. Latches the Serial Management Port Address of the ICS1893BF into the Extended Control Register,
3. Enables all its internal modules and state machines
4. Sets all Management Register bits to their default values
5. Enables the Twisted-Pair Transmit pins (TP_TXP and TP_TXN)
6. Resynchronizes both its Transmit and Receive Phase-Locked Loops, which provide its transmit clock
(TXCLK) and receive clock (RXCLK)
7. Releases all MAC Interface pins, which takes a maximum of 640 ns after the reset condition is removed
4.1.1.3 Hot Insertion
As with the ICS189X products, the ICS1893BF reset design supports ‘hot insertion’ of its MII. (That is, the
ICS1893BF can connect its MAC Interface to a MAC while power is already applied to the MAC.)
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