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TMS570LS3137 Datasheet(PDF) 155 Page - Texas Instruments

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Part # TMS570LS3137
Description  TMS570LS3137 16- and 32-Bit RISC Flash Microcontroller
PDF  173 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TMS570LS3137 Datasheet(HTML) 155 Page - Texas Instruments

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1
2
3
RMII_REFCLK
RMII_TXEN
RMII_TXD[1:0]
RMII_RXD[1:0]
RMII_CRS_DV
RMII_RX_ER
6
7
11
9
8
5
4
10
5
TMS570LS3137
www.ti.com
SPNS162C – APRIL 2012 – REVISED APRIL 2015
7.11.2 Ethernet RMII Electrical and Timing Specifications
Figure 7-20. RMII Timing Diagram
Table 7-30. Timing Requirements for EMAC RMII Receive and RMII_REFCLK
NO.
MIN
NOM
MAX
UNIT
1
tc(REFCLK)
Cycle time, RMII_REFCLK
20
ns
2
tw(REFCLKH)
Pulse width, RMII_REFCLK high
7
13
ns
3
tw(REFCLKL)
Pulse width, RMII_REFCLK low
7
13
ns
6
tsu(RXD-REFCLK)
Input setup time, RMII_RXD[1:0] valid before RMII_REFCLK high
4
ns
7
th(REFCLK-RXD)
Input hold time, RMII_RXD[1:0] valid after RMII_REFCLK high
2
ns
8
tsu(CRSDV-REFCLK) Input setup time, RMII_CRS_DV valid before RMII_REFCLK high
4
ns
9
th(REFCLK-CRSDV)
Input hold time, RMII_CRS_DV valid after RMII_REFCLK high
2
ns
10
tsu(RXER-REFCLK)
Input setup time, RMII_RX_ER valid before RMII_REFCLK high
4
ns
11
th(REFCLK-RXER)
Input hold time, RMII_RX_ER valid after RMII_REFCLK high
2
ns
Table 7-31. Switching Characteristics Over Recommended Operating Conditions for EMAC RMII Transmit
NO.
PARAMETER
MIN
MAX
UNIT
4
td(REFCLK-TXD)
Output delay time, RMII_REFCLK high to RMII_TXD[1:0] valid
2
ns
5
td(REFCLK-TXEN)
Output delay time, RMII_REFCLK high to RMII_TXEN valid
2
ns
Copyright © 2012–2015, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications
155
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