THCV231 datasheet(26/56 Pages) THINE

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THCV231_THCV236_Rev.2.30_E

THine Electronics, Inc.

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Security E

GPIO

The GPIO pin provides up to 2-I/O ports and 2 types of GPIO are available (“Through GPIO” and

“Programmable GPIO”). All GPIO pins of THCV236 have another function if being set. See Table 26. GPIO

type is selected by GPIO_TYPE register (0x40(Sub-Link Master), 0xC0(Sub-Link Slave)). Programmable GPIO

is available by all GPIO pins. Through GPIO is available by only GPIO4 and GPIO3 pin. See Through GPIO

section and Programmable GPIO section about detail of respective GPIO type.

Table 25. GPIO Type

GPIO#

GPIO Type

Through GPIO

Programmable GPIO

GPIO4

Available

GPIO3

Table 26. GPIO setting of THCV236

Pin Name

Function

Sub-Link Master

RXDEFSEL=0

D25/GPIO4

GPIO4

D24/GPIO3

GPIO3

COL0/INT/GPIO2

INT

TTLDRV/SD2/AIN0/GPIO1

AIN0

LATEN/SD3/AIN1/GPIO0

AIN1

Through GPIO

Input to GPIO4 and GPIO3 of Sub-Link Master device is output from GPIO4 and GPIO3 of Sub-Link Slave

device respectively. Note that these GPIO signals can’t be transferred from Sub-Link Slave device to Sub-Link

Master device. It’s possible to confirm GPIO4 and GPIO3 input value to Sub-Link Master by register read (0x41

GPIOn_INPUT_MONITOR (n=4,3) ).

2-wire

Serial

I/F

GPIO4

GPIO3

(Input)

ADR

0x40

0x41

0x42

0x43

0x46

Name

GPIOn_TYPE (n=4,3)

GPIOn_INPUT_MONITOR (n=4,3)

GPIOn_OUT (n=4,3)

GPIO_IO_SEL

GPIOn_OUTBUF_SEL (n=4,3)

Sub-Link

Control Block

THCV236

(Sub-Link Master)

Value

GPIO

Iuput value

(*1)

ADR

0xC0

0xC1

0xC2

0xC3

0xC6

Name

GPIOn_TYPE (n=4,3)

GPIOn_INPUT_MONITOR (n=4,3)

GPIOn_OUT (n=4,3)

GPIO_IO_SEL

GPIOn_OUTBUF_SEL (n=4,3)

Value

(*1)

HOST

MPU

GPIO4,

GPIO3

(Output)

Sub-Link

Control Block

GPIO Input : Read 0x41 value

THCV231

(Sub-Link Slave)

Pull-up for

Open Drain

Output

(default)

*1 See Table 27

Figure 11. Through GPIO

THCV231 Datasheet(PDF) 26 Page - THine Electronics, Inc.

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