參數(shù)資料
型號： ICS1893BFILFT
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 66/133頁
文件大?。?/td> 0K
描述： PHYCEIVER LOW PWR 3.3V 48-SSOP
標準包裝： 1,000
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： 48-BSSOP（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 48-SSOP
包裝： 帶卷 (TR)
其它名稱： 1893BFILFT
ICS1893BF, Rev. F, 5/13/10
May, 2010
38
Chapter 6 Functional Blocks
ICS1893BF Data Sheet - Release
Copyright 2009, IDT, Inc.
All rights reserved.
Upon receipt of an ESD, the Receive state machine returns to the IDLE state without passing the ESD to
the MAC Interface. Detection of an error forces the Receive state machine to assert the receive error signal
(RX_ER) and wait for the next symbol. If the ICS1893BF Receive state machine detects a premature end,
it forces the assertion of the RX_ER signal, sets the Premature End bit (bit 17.5) to logic one, and
transitions to the IDLE State.
6.3.4.2 PMA Receive Modules
The ICS1893BF has a PMA Receive module that provides the following functions:
NRZI Decoding
The Receive module performs the NRZI decoding on the serial bit stream received from the Twisted-Pair
Physical Medium Dependent (TP-PMD) sublayer. It converts the bit stream to a unipolar, positive, binary
format that the PMA subsequently passes to the PCS.
Receive Clock Recovery
The Receive Clock Recovery function consists of a phase-locked loop (PLL) that operates on the serial
data stream received from the PMD sublayer. This PLL automatically synchronizes itself to the clock
encoded in the serial data stream and then provides both a recovered clock and data stream to the PCS.
Link Monitoring
– The ICS1893BF’s PMA Link Monitoring function observes the Receive Clock PLL. If the Receive
Clock PLL cannot acquire ‘lock’ on the serial data stream, it asserts an error signal. The status of this
error signal can be read in the QuickPoll Detailed Status Register’s PLL Lock Error bit (bit 17.9). This
bit is a latching high (LH) bit. (For more information on latching high and latching low bits, see Section
– In addition, the ICS1893BF’s PMA Link Monitor function continually audits the state of the connection
with the remote link partner. It asserts a receive channel error if a receive signal is not detected or if
a PLL Lock Error occurs. These errors, in turn, generate a link fault and force the link monitor
function to clear both the Status Register’s Link Status bit (bit 1.2) and the QuickPoll Detailed Status
Register’s Link Status bit (bit 17.0).
6.3.5 PCS Control Signal Generation
For the PCS sublayer, there are two control signals: a Carrier Sense signal (CRS) and a Collision Detect
signal (COL).
The CRS control signals is generated as follows:
1. When a logic zero is detected in an idle bit stream, the Receive Functions examines the ensuing bits.
2. When the Receive Functions find the first two non-contiguous zero bits, the Receive state machine
moves into the Carrier Detect state.
3. As a result, the Boolean Receiving variable is set to TRUE.
4. Consequently, the Carrier Sense state machine moves into the Carrier Sense ‘on’ state, which asserts
the CRS signal.
5. If the PCS Functions:
a. Cannot confirm either the /I/J/ (IDLE, J) symbols or the /J/K/ symbols, the receive error signal
(RX_ER) is asserted, and the Receive state machine returns to the IDLE state. In IDLE, the
Boolean Receiving variable is set to FALSE, thereby causing the Carrier Sense state machine to
set the CRS signal to FALSE.
b. Can confirm the /I/J/K/ symbols, then the Receive state machine transitions to the ‘Receive’ state.
The COL control signal is generated by the transmit modules. For details, see Section 6.3.3.1, “PCS
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ICS1893BFIT 功能描述:PHYCEIVER LOW PWR 3.3V 48-SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:PHYceiver™ 標準包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR)
ICS1893BFLF 功能描述:PHYCEIVER LOW PWR 3.3V 48-SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:PHYceiver™ 標準包裝:250 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
ICS1893BFLFT 功能描述:PHYCEIVER LOW PWR 3.3V 48-SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:PHYceiver™ 標準包裝:250 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
ICS1893BFT 功能描述:PHYCEIVER LOW PWR 3.3V 48-SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:PHYceiver™ 標準包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR)
ICS1893BK 功能描述:PHYCEIVER LOW PWR 3.3V 56-VQFN RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:PHYceiver™ 標準包裝:250 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
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