LAN9220 datasheet(82/142 Pages) MICROCHIP

82 / 142 page

LAN9220

DS00002417A-page 82

 2006-2017 Microchip Technology Inc.

5.3.14

GPIO_CFG—GENERAL PURPOSE IO CONFIGURATION REGISTER

This register configures the GPIO and LED functions.

Offset:

88h

Size:

32 bits

Bits

Description

Type

Default

Reserved

30:28

LED[3:1] enable (LEDx_EN). A ‘1’ sets the associated pin as an LED

output. When cleared low, the pin functions as a GPIO signal.

LED1/GPIO0 – bit 28

LED2/GPIO1 – bit 29

LED3/GPIO2 – bit 30

R/W

000

Reserved

26:24

GPIO Interrupt Polarity 0-2 (GPIO_INT_POL). When set high, a high logic

level on the corresponding GPIO pin will set the corresponding INT_STS

pin will set the corresponding INT_STS register bit.

GPIO Interrupts must also be enabled in GPIOx_INT_EN in the INT_EN

GPIO0 – bit 24

GPIO1 – bit 25

GPIO2 – bit 26

Note:

GPIO inputs must be active for greater than 40nS to be recognized

as interrupt inputs.

R/W

000

Reserved

22:20

EEPROM Enable (EEPR_EN). The value of this field determines the

function of the external EEDIO and EECLK:

Please refer to Table 5-4 for the EEPROM Enable bit function definitions.

Note:

The host must not change the function of the EEDIO and EECLK

pins when an EEPROM read or write cycle is in progress. Do not

use reserved settings.

R/W

000

Reserved

18:16

GPIO Buffer Type 0-2 (GPIOBUFn). When set, the output buffer for the

corresponding GPIO signal is configured as a push/pull driver. When

cleared, the corresponding GPIO set configured as an open-drain driver.

GPIO0 – bit 16

GPIO1 – bit 17

GPIO2 – bit 18

R/W

000

15:11

Reserved

10:8

GPIO Direction 0-2 (GPDIRn). When set, enables the corresponding GPIO

as output. When cleared the GPIO is enabled as an input.

GPIO0 – bit 8

GPIO1 – bit 9

GPIO2 – bit 10

R/W

0000

7:5

Reserved

LAN9220 датащи(PDF) 82 Page - Microchip Technology

LAN9220 датащи(HTML) 82 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL