EVB9311 SMSC, EVB9311 Datasheet - Page 174

• Manufacturer Part Number: EVB9311
• Description: EVALUATION BOARD LAN9311-NU
• Manufacturer: SMSC
• Series: 0133r

Specifications of EVB9311

• Main Purpose: Interface, Ethernet
• Embedded: No
• Utilized Ic / Part: LAN9311
• Primary Attributes: 2 Ports, 100BASE-TX/10BASE-T, Managed
• Secondary Attributes: 2 PHYs with HP Auto-MDIX, Auto- Flow Control, 32-bit CRC, MDI/MDI-X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1076

Revision 1.7 (06-29-10)
BITS
3:1
4
0
IRQ Polarity (IRQ_POL)
When cleared, this bit enables the IRQ line to function as an active low
output. When set, the IRQ output is active high. When the IRQ is configured
as an open-drain output (via the IRQ_TYPE bit), this bit is ignored, and the
interrupt is always active low.
0: IRQ active low output
1: IRQ active high output
RESERVED
IRQ Buffer Type (IRQ_TYPE)
When this bit is cleared, the IRQ pin functions as an open-drain output for
use in a wired-or interrupt configuration. When set, the IRQ is a push-pull
driver.
Note:
0: IRQ pin open-drain output
1: IRQ pin push-pull driver
Note 14.1 Register bits designated as NASR are not reset when either the SRST bit in the
When configured as an open-drain output, the IRQ_POL bit is
ignored and the interrupt output is always active low.
Configuration Register (HW_CFG)
Register (RESET_CTL)
DESCRIPTION
DATASHEET
is set.
174
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
register or the DIGITAL_RST bit in the
Note 14.1
Note 14.1
NASR
NASR
TYPE
R/W
R/W
SMSC LAN9311/LAN9311i
RO
Reset Control
DEFAULT
Hardware
Datasheet
0b
0b
-