EVB9311 SMSC, EVB9311 Datasheet - Page 195

• 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

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
14.2.3.2
31:28
27:16
15:12
BITS
11:0
RESERVED
GPIO Direction 11-0 (GPIODIR[11:0])
These bits set the input/output direction of the 12 GPIO pins.
0: GPIO pin is configured as an input
1: GPIO pin is configured as an output
RESERVED
GPIO Data 11-0 (GPIOD[11:0])
When a GPIO pin is enabled as an output, the value written to this field is
output on the corresponding GPIO pin. Upon a read, the value returned
depends on the current direction of the pin. If the pin is an input, the data
reflects the current state of the corresponding GPIO pin. If the pin is an
output, the data is the value that was last written into this register. For
GPIOs 11-10 and 7-0, the pin direction is determined by the GPDIR bits of
this register. For GPIOs 9 and 8, the pin direction is determined by the
GPDIR bits and the 1588_GPIO_OE bits in the
Configuration Register
General Purpose I/O Data & Direction Register (GPIO_DATA_DIR)
This read/write register configures the direction of the 12 GPIO pins and contains the GPIO input and
output data bits.
Offset:
(GPIO_CFG).
1E4h
DESCRIPTION
DATASHEET
195
General Purpose I/O
Size:
32 bits
TYPE
R/W
R/W
RO
RO
Revision 1.7 (06-29-10)
DEFAULT
0h
0h
-
-