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USB-TO-GPIO 데이터시트(PDF) 15 Page - Texas Instruments

부품명 USB-TO-GPIO
상세설명  USB Interface Adapter Evaluation Module
PDF  50 Pages
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USB-TO-GPIO 데이터시트(HTML) 15 Page - Texas Instruments

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3.5
Read/Write Port 0 Command and Response
3.6
EEPROM Program Command and Response
Read/Write Port 0 Command and Response
USB PACKET
COMMAND
BYTE 0
USB PACKET USB PACKET
USB PACKET USB PACKET USB PACKET
USB PACKET
COMMENTS
DESCRIPTION
COMMAND
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTES 6–63
CODE
B does not
A
apply to port 0
(bit.x=1 for
read. Each
Read/Write
B
0x16
read/input,
GPIO can be
Port 0
(byte to write)
bit.x=0 for
configured as
write /output)
input or
output.
USB PACKET
COMMAND
BYTE 0
USB PACKET USB PACKET
USB PACKET USB PACKET USB PACKET
USB PACKET
COMMENTS
DESCRIPTION
COMMAND
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTES 6–63
CODE
Response from
Success: 0
Byte read
Read/Write
0x96
Fail: 1
from port 0
Port 0
Each individual GPIO pin of the TUSB3210 port 0 can be configured as either an input or an output (see
the schematic in Chapter 6).
GPIO pins 3 to 7 are configured to have internal pullups turned on so no special external pullups are
needed unless stronger I/O drives are necessary.
GPIO pins 0, 1, and 2 are configured to be open-drain I/O ports. Use the software-configurable pullups to
support I/O functions.
When pin 0 or pin 1 is used as a GPIO, the I2C does not function properly anymore. Only after a power-on
reset can the I2C function be used again without using pins 0 and 1 as GPIOs. Therefore, it is
recommended that no more than six GPIO pins are used, reserve pins 0 and 1 exclusively for I2C
applications.
USB PACKET
COMMAND
BYTE 0
USB PACKET USB PACKET
USB PACKET USB PACKET USB PACKET
USB PACKET
COMMENTS
DESCRIPTION
COMMAND
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTES 6–63
CODE
EEPROM
A = Starting
B = Starting
C (# of bytes
Data to be programmed into EEPROM (up to
0x18
Program
address MSB
address LSB
to program)
32 bytes)
USB PACKET
COMMAND
BYTE 0
USB PACKET USB PACKET
USB PACKET USB PACKET USB PACKET
USB PACKET
COMMENTS
DESCRIPTION
COMMAND
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTES 6–63
CODE
Response from
Success: 0
EPROM
0x98
Fail: 1
Program
This command is used for programming a firmware image to the EEPROM (U1 on schematic) of the EVM.
It is recommended that the whole firmware image be split into multiple blocks of 32 bytes and call this
command repeatedly until the programming is completed.
SLLU093 – August 2006
Firmware Programming and Communications Protocol
15
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