TMP1827 datasheet(42/68 Pages) TI

42 / 68 page

RST

ATR

FLEXADDR

1-BYTE FLEX

ADDRESS DEVICE-

0Fh

GPIO READ

CRC

F5h

DEVICE SENDS

GPIO BYTE

RST

ATR

FLEXADDR

1-BYTE FLEX

ADDRESS DEVICE-

0Fh

GPIO READ

CRC

F5h

DEVICE SENDS

GPIO BYTE

CRC

DEVICE SENDS

GPIO BYTE

RST

ATR

FLEXADDR

1-BYTE FLEX

ADDRESS DEVICE-

0Fh

GPIO READ

CRC

F5h

DEVICE SENDS

GPIO BYTE

CRC

DEVICE SENDS

GPIO BYTE

Figure 8-30. Multiple Device GPIO Read Flow

8.5.7 Multiple Device IO Write and Read

Figure 8-31 shows the program flow that the host MCU must execute for configuring the and reading the IO

from a device. The host selects the device it wants to communicate with and issues the GPIO WRITE function.

The host shall then send the IO configuration register followed by an inverted value, that allows the device to

check for any bus transmission error. If the host receives a return code any other than AAh, it must terminate the

transaction by sending a bus reset. When the host gets the return code of AAh from the device, it shall wait for

the device to sample the bus and then read back the IO read register along with a CRC. If the host plans to read

the device continuously, then it must send a bus reset and initiate a GPIO READ function.

RST

ATR

FLEXADDR

1-BYTE FLEX

ADDRESS

0Fh

GPIO WRITE

GPIO CONFIG

BYTE

A5h

GPIO CONFIG

BYTE

CRC

DEVICE RETURN

CODE

DEVICE SENDS

GPIO BYTE

AAh

RST

ATR

FLEXADDR

1-BYTE FLEX

ADDRESS

0Fh

GPIO WRITE

GPIO CONFIG

BYTE

A5h

GPIO CONFIG

BYTE

CRC

DEVICE RETURN

CODE

DEVICE SENDS

GPIO BYTE

AAh

Figure 8-31. Multiple Device GPIO Write and Read Flow

TMP1827

SBOSA15 – SEPTEMBER 2022

www.ti.com

Submit Document Feedback

Product Folder Links: TMP1827

TMP1827 bảng dữ liệu(PDF) 42 Page - Texas Instruments

TMP1827 bảng dữ liệu(HTML) 42 Page - Texas Instruments

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

bảng dữ liệu tải về

Link URL