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參數(shù)資料
| 型號(hào)： | TMC2005 |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | 5 Port HUB Controller Device |
| 中文描述： | DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PQFP60 |
| 封裝： | QFP-60 |
| 文件頁(yè)數(shù)： | 21/32頁(yè) |
| 文件大小： | 153K |
| 代理商： | TMC2005 |
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SMSC DS – TMC2005
Page 21
Rev. 10/24/2000
PORT GROUP
The five ports can be divided into three groups (group A: two ports, group B: two ports, extension port: one port) and
each group can select TX/RX polar, noise cut mode, and big jitter mode respectively. Select pins for each group are
as follows:
FUNCTION
RECEIVE
TRANSMIT
RX POLARITY
TX POLARITY
TX CONTROL
NOISE CUT
BIG JITTER
EXTENSION
GROUP A
RXINA0, 1
TXENA0, 1
SA
LA
MA
nMBA
nBJA
GROUP B
RXINB0, 1
TXENB0, 1
SB
LB
MB
nMBB
nBJB
EXTENSION
EXTRX
EXTTX
SE
LE
ME
nMBE
nBJE
nEXTOD
Various Setup
Example For Operation Mode Setup To Each Port
LA, LB, LE
MA, MB, ME
0
1
Active Low
1
0
Active High
0
1
Active High
1
1
Active Low
SA, SB, SE
1
0
0
1
RX POLAR
TX POLAR
Active Low
Active High
Active Low
Active High
TRANSCEIVER
HYC2485S/HYC2488S
Optical Transceiver
HYC9088/HYC9068
RS485 Transceiver
Note for Unused port
Unused ports can be left open because RX port (RX input), RX polar (S input), TX polar (L input), TX control (M
input) pins have internal pull-up resistors. Because of internal pull-up resistors, select pins for noise cut (nMB
input), big jitter (nBJ input) can be left open when used for setting “OFF”.
Example for Power-On Reset Circuit
FIGURE 9 - POWER-ON RESET
+5V
TMC2005
39
nRST
TMC2005
39
nRST
Rp
10K
Cp
4.7uF
Ct
0.1uF
3
2
MB3771/NJM2103
1
2
3
4
5
6
7
8
1
2T
2T
2T
2T
2T
2T
2T
POWER-ON RESET CIRCUIT (C, R)
POWER-ON RESET CIRCUIT (POR IC)
+5V
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相關(guān)代理商/技術(shù)參數(shù) |
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| TMC2005-JT | 功能描述:接口 - 專用 5 Port Hub Contrllr RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
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| TMC-20073 | 制造商:Microchip Technology Inc 功能描述:ARCNET CONTROLLER |
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