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PDF DM9620AI Data sheet ( Hoja de datos )
| Número de pieza | DM9620AI | |
| Descripción | Industrial-temperature USB2.0 to 10/100M Fast Ethernet Controller | |
| Fabricantes | DAVICOM | |
| Logotipo |  |
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DM9620AI
USB2.0 to Fast Ethernet Controller
DAVICOM Semiconductor, Inc.
DM9620AI
Industrial-temperature USB2.0 to 10/100M Fast
Ethernet Controller
DATA SHEET
Preliminary
Version: DM9620AI -16-DS-P01
March 12, 2013
Preliminary
Version: DM9620AI-DS-P01
March 12, 2013
1
1 page  
DM9620AI
USB2.0 to Fast Ethernet Controller
7.2.9 4B5B Code Group .......................................................................................... 55
7.2.10 100Base-TX Receiver .................................................................................. 56
7.2.11 Signal Detect ................................................................................................ 56
7.2.12 Adaptive Equalization ................................................................................... 56
7.2.13 MLT-3 to NRZI Decoder ............................................................................... 56
7.2.14 Clock Recovery Module................................................................................ 56
7.2.15 NRZI to NRZ................................................................................................. 56
7.2.16 Serial to Parallel ........................................................................................... 56
7.2.17 Descrambler ................................................................................................. 56
7.2.18 Code Group Alignment ................................................................................. 57
7.2.19 4B5B Decoder .............................................................................................. 57
7.2.20 10Base-T Operation ..................................................................................... 57
7.2.21 Collision Detection........................................................................................ 57
7.2.22 Carrier Sense ............................................................................................... 57
7.2.23 Auto-Negotiation........................................................................................... 57
7.2.24 Auto-Negotiation (continued) ........................................................................ 57
8. DC and AC Electrical Characteristics ................................................................................ 58
8.1 Absolute Maximum Ratings ...................................................................................... 58
8.1.1 Operating Conditions...................................................................................... 58
8.2 DC Electrical Characteristics (VDD = 3.3V).............................................................. 59
8.3 AC Electrical Characteristics & Timing Waveforms .................................................. 59
8.3.1 TP Interface .................................................................................................... 59
8.3.2 Oscillator/Crystal Timing ( 25°C ) ................................................................... 60
9. AC Timing waveform: ........................................................................................................ 61
9.1 Power On Reset Timing............................................................................................ 61
9.2 EEPROM timing ....................................................................................................... 62
9.3 MII Management Timing ........................................................................................... 63
9.4 MII TX timing ............................................................................................................ 64
9.5 MII RX timing ............................................................................................................ 64
9.6 RMII TX timing.......................................................................................................... 65
9.7 RMII RX timing ......................................................................................................... 65
9.8 RevMII TX timing ...................................................................................................... 66
9.9 RevMII RX timing...................................................................................................... 66
10 Magnetic and Crystal Selection Guide.............................................................................. 67
Preliminary
Version: DM9620AI -16-DS-P01
March 12, 2013
5
5 Page 
DM9620AI
USB2.0 to Fast Ethernet Controller
3.2 64-pin Description
I = Input, O = Output, I/O = Input / Output, O/D = Open Drain, P = Power, PD=internal pull-low (about 50K Ohm)
3.2.1 MII Interfaces
Pin No.
Pin Name
26 MDC
27 MDIO
12,13,15,16 TXD[3:0]
11 TXEN
18 TXC
33 CRS
34 COL
25 RXER
31 RXC
24 RXDV
19,20,21,22 RXD[3:0]
Type
O,PD
I/O
O,PD
O,PD
I,PD
I
I
I
I
I
I
Description
MII Serial Management Data Clock
MII Serial Management Data
MII Transmit Data
4-bit nibble data outputs (synchronous to the TXC)
MII Transmit Enable
MII Transmit Clock
MII Carrier Sense
MII Collision Detect
MII Receive Error
MII Receive Clock
MII Receive Data Valid
MII Receive Data
4-bit nibble data input (synchronous to RXC)
3.2.2 RMII Interfaces
Pin No.
Pin Name
26 MDC
27 MDIO
12,13
TXD3~2
15,16
TXD1~0
11 TXEN
18 TXC
33 CRS
34 COL
25 RXER
31 RXC
24 RXDV
19,20
RXD3~2
21,22
RXD1~0
3.2.3 Reverse MII Interfaces
Pin No.
Pin Name
26 MDC
27 MDIO
12,13,15,16 TXD[3:0]
11 TXEN
18 TXC
33 CRS
34 COL
Type
O,PD
I/O
O,PD
O,PD
O,PD
I,PD
I
I
I
I
I
I
I
Description
MII Serial Management Data Clock
MII Serial Management Data
Reserved
RMII Transmit Data
RMII Transmit Enable
Reserved
RMII CRS_DV
Reserved, tie to ground in application.
Reserved, tie to ground in application.
50MHz reference clock.
Reserved, tie to ground in application.
Reserved, tie to ground in application.
RMII Receive Data
I/O
O,PD
I/O
O,PD
O,PD
O
O
O
Description
Reserved
Reserved
MII Transmit Data
4-bit nibble data outputs (synchronous to the TXC)
MII Transmit Enable
25MHz clock output
carrier sense output when TXE or RXDV asserted
collision output when TXE and RXDV asserted
Preliminary
Version: DM9620AI -16-DS-P01
March 12, 2013
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet DM9620AI.PDF ] | |
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