LAN7500I-ABZJ SMSC, LAN7500I-ABZJ Datasheet - Page 21

• Manufacturer Part Number: LAN7500I-ABZJ
• Description: IC USB-10/100/1K ETH CTRL 56QFN
• Manufacturer: SMSC

Specifications of LAN7500I-ABZJ

• Design Resources: LAN7500I BOM LAN7500I Schematic
• Controller Type: Ethernet Controller, USB 2.0 to 10/100/1K
• Interface: USB/Serial
• Voltage - Supply: 1.2V, 2.5V, 3.3V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 56-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Other names: 638-1109

Hi-Speed USB 2.0 to 10/100/1000 Ethernet Controller
Datasheet
SMSC LAN7500/LAN7500i
BITS
6:5
7
4
3
2
Port Swap
This bit facilitates swapping the mapping of USBDP and USBDM.
0 = USBDP maps to the USB D+ line and USBDM maps to the USB D- line.
1 = USBDP maps to the USB D- line. USBDM maps to the USB D+ line.
PHY Boost
This field provides the ability to boost the electrical drive strength of the HS output current to the
upstream port.
00 = Normal electrical drive strength.
01 = Elevated electrical drive strength (+4% boost).
10 = Elevated electrical drive strength (+8% boost).
11 = Elevated electrical drive strength (+12% boost).
Duplex Detection
This bit determines whether duplex operational mode is detected automatically or manually set.
0 = Manual
1 = Automatic
Speed Detection
This bit determines whether operational speed is detected automatically or manually set.
0 = Manual
1 = Automatic
SPD_LED_FUNCTION
This bit specifies the functionality of speed LEDs
determined by line speed and the setting of this bit, as indicated in following table:
When SPD_LED_FUNCTION = 0, the LEDs function solely as Link and Speed LEDs. When
SPD_LED_FUNCTION = 1, the LEDs function as Link and Speed and Activity LEDs. In those cases,
the table entry “Blink” indicates the LED will remain on when no transmit or receive activity is detected
and will blink at an 80 mS rate whenever TX or RX activity is detected.
Note:
SPD_LED_FUNCTION
Table 3.2
it will override the values in
GPIOEN[1:0] in
operation. If only one of the bits is set, then untoward operation and unexpected results may
occur. If both bits are clear, then
describes the
0
0
0
0
1
1
1
1
Configuration Flags 1
Configuration Flags 0
Table 3.2 Configuration Flags 0
Configuration Flags
SPEED (Mbps)
No Link
No Link
1000
1000
100
100
DATASHEET
10
10
SPD_LED_FUNCTION
DESCRIPTION
21
byte. If a configuration descriptor exists in the EEPROM,
must be set in order to properly control speed LED
(LED0
0.
LED0
Blink
Blink
Off
On
Off
On
Off
Off
and LED1). The Speed LEDs’ behavior is
is ignored.
LED1
Blink
Blink
Off
Off
On
On
Off
Off
Revision 1.0 (11-01-10)