AM6421 datasheet(145/237 Pages) TI

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FSI_TXn_CLK

FSIT5

FSIT4

FSI_TXn_D0

FSI_TXn_D1

FSIT6

FSIT7

FSIT8

FSIT5

Figure 7-36. FSI Switching Characteristics - SPI Mode

For more information, see Fast Serial Interface section in Peripherals chapter in the device TRM.

7.10.5.7 GPIO

Table 7-44, Table 7-45, and Table 7-46 present timing conditions, requirements, and switching characteristics for

GPIO.

For more details about features and additional description information on the device GPIO, see the

corresponding sections within Section 6.3, Signal Descriptions and Section 8, Detailed Description.

Note

The device has multiple GPIO modules. GPIOn_x is generic name used to describe a GPIO signal,

where n represents the specific GPIO module and x represents one of the input/output signals

associated with the module.

Table 7-44. GPIO Timing Conditions

PARAMETER

BUFFER TYPE

MIN

MAX UNIT

INPUT CONDITIONS

SRI

Input slew rate

LVCMOS

0.75

6.6

V/ns

I2C OD FS

TBD

V/ns

OUTPUT CONDITIONS

Output load capacitance

LVCMOS

I2C OD FS

100

Table 7-45. GPIO Timing Requirements

NO.

PARAMETER

DESCRIPTION

BUFFER TYPE

MIN

MAX

UNIT

GPIO1 tw(GPIO_IN)

Pulse width, GPIOn_x

LVCMOS

2P + 2.6

(1)

I2C OD FS

2P + 2.6

(1)

P = functional clock period in ns.

Table 7-46. GPIO Switching Characteristics

NO.

PARAMETER

DESCRIPTION

BUFFER TYPE

MIN

MAX

UNIT

GPIO2 tw(GPIO_OUT)

Pulse width, GPIOn_x

LVCMOS

-3.6 +

0.975P

(1)

I2C OD FS

160

(1)

P = functional clock period in ns.

For more information, see General-Purpose Interface (GPIO) section in Peripherals chapter in the device TRM.

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AM6442, AM6441, AM6421

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SPRSP56 – JANUARY 2021

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