lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 162
lan9312
Manufacturer Part Number
lan9312
Description
Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9312.pdf
(458 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
lan9312-NU
Manufacturer:
Microchip Technology
Quantity:
10 000
Company:
Part Number:
lan9312-NZW
Manufacturer:
Standard
Quantity:
143
Company:
Part Number:
lan9312-NZW
Manufacturer:
Microchip Technology
Quantity:
10 000
- Current page: 162 of 458
- Download datasheet (6Mb)
Chapter 13 GPIO/LED Controller
Revision 1.2 (04-08-08)
13.1
13.2
The GPIO/LED Controller provides 12 configurable general purpose input/output pins, GPIO[11:0].
These pins can be individually configured to function as inputs, push-pull outputs, or open drain outputs
and each is capable of interrupt generation with configurable polarity. Two of the GPIO pins (GPIO[9:8])
can be used for IEEE 1588 timestamp functions, allowing GPIO driven 1588 time clock capture when
configured as an input, or GPIO output generation based on an IEEE 1588 clock target compare event.
In addition, 8 of the GPIO pins can be alternatively configured as LED outputs. These pins, GPIO[7:0]
(nP1LED[3:0] and nP2LED[3:0]), may be enabled to drive Ethernet status LEDs for external indication
of various attributes of the switch ports.
GPIO and LED functionality is configured via the GPIO/LED System Control and Status Registers
(CSRs), accessible through the Host Bus Interface (HBI). These registers are defined in
14.2.3, "GPIO/LED," on page
The GPIO controller is comprised of 12 programmable input/output pins. These pins are individually
configurable via the GPIO CSRs. On application of a chip-level reset:
Note: GPIO[7:0] may be configured as LED outputs by default, dependant on the LED_en_stap[7:0]
The direction and buffer type of all 12 GPIOs are configured via the
Register (GPIO_CFG)
direction of each GPIO, input or output, should be configured first via its respective GPIO direction bit
(GPDIR[11:0]) in the
configured as an output, the output buffer type for each GPIO is selected by the GPIOBUF[11:0] bits
in the
buffers are supported for each GPIO. When functioning as an open-drain driver, the GPIO output pin
is driven low when the corresponding data register bit (GPIOD in the
Direction Register
When a GPIO is enabled as an output, the value output to the GPIO pin is set via the corresponding
GPIOD[11:0] bit in the
configured as inputs, the corresponding GPIOD[11:0] bit reflects the current state of the GPIO input.
Note: For GPIO[9:8], the pin direction is a function of both the GPDIR[9:8] bits of the
Functional Overview
GPIO Operation
All GPIOs are set as inputs (GPDIR[11:0] cleared in
(GPIO_DATA_DIR))
All GPIO interrupts are disabled (GPIO[11:0]_INT_EN cleared in
Status and Enable Register (GPIO_INT_STS_EN)
All GPIO interrupts are configured to low logic level triggering (GPIO_INT_POL[11:0] cleared in
General Purpose I/O Configuration Register
General Purpose I/O Configuration Register
configuration straps. Refer to
Purpose I/O Data & Direction Register (GPIO_DATA_DIR)
the
General Purpose I/O Configuration Register
(GPIO_DATA_DIR)) is cleared to 0, and is not driven when set to 1.
General Purpose I/O Data & Direction Register
General Purpose I/O Data & Direction Register
and
General Purpose I/O Data & Direction Register
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
192.
DATASHEET
Section 13.3, "LED Operation"
162
(GPIO_CFG))
(GPIO_CFG). Push/pull and open-drain output
General Purpose I/O Data & Direction Register
(GPIO_CFG).
and the 1588_GPIO_OE[9:8] bits in
General Purpose I/O Configuration
General Purpose I/O Interrupt
for additional information.
(GPIO_DATA_DIR). For GPIOs
General Purpose I/O Data &
(GPIO_DATA_DIR). When
(GPIO_DATA_DIR). The
SMSC LAN9312
Datasheet
General
Section
Related parts for lan9312
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Interface, Integrated USB2.0 Compatible 3-Port Hub
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Lan91c100fd Rev. B Feast Fast Ethernet Controller With Full Duplex Capability
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Feast ? Ast Ethernet Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Com20022i 10 Mbps Arcnet Ansi 878.1 Controller With 2k X 8 On-chip Ram
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Lpc47n207 Lpc Super I/o Irda Hot Docking Chip With Uart Data Brief
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Advanced I/o With X-bus Interface
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Fdc37m707 Enhanced Super I/o Controller With Wake-up Features
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Twenty Pin Uart Tpuart Corporation
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Enhanced Small Device Interface Controller
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Emc1001 1.5?c Smbus Temperature Sensor In Miniature Sot-23
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Beta Compensation And Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Multiple Temperature Sensor With Beta Compensation And Hottest Of Thermal Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Resistance Error Correction & Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet: