參數(shù)資料
型號(hào)： ICS1893BKLF
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 43/133頁
文件大小： 0K
描述： PHYCEIVER LOW PWR 3.3V 56-VQFN
標(biāo)準(zhǔn)包裝： 260
系列： PHYceiver™
類型： PHY 收發(fā)器
規(guī)程： MII
電源電壓： 3.14 V ~ 3.47 V
安裝類型： 表面貼裝
封裝/外殼： 56-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 56-VFQFP-EP（8x8）
包裝： 管件
其它名稱： 1893BKLF
800-1019
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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