M32C83T datasheet(313/527 Pages) RENESAS

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Page 290

21. Intelligent I/O (Group 0, 1 Communication Function)

)

(

Figure 21.33 G0CR to G1CR Registers

Group i SI/O Communication Control Register (i=0,1)

Symbol

Address

After Reset

G0CR, G1CR

00EF16, 012F16

0000 X0002

Bit Name

Function

Bit

Symbol

Nothing is assigned. When write, set to "0".

When read, its contents is indeterminate.

TXEPT

(b3)

Transmit Buffer

Empty Flag

Receive Complete

Flag

Transmit Enable Bit

Receive Enable Bit

0 : No data in the GiRB register

1 : Data in the GiRB register

0 : Transmit disable

1 : Transmit enable

Transmit Register

Empty Flag

0 : Data in the GiTB register

1 : No data in the GiTB register

0 : Receive disable

1 : Receive enable

0 : Data in the transmit register

(during transmission)

1 : No data in the transmit register

(transmit completed)

IPOL

OPOL

ISRxD Input Polarity

Switch Bit

ISTxD Output Polarity

Switch Bit

0 : No inverse

1 : Inverse(1)

0 : No inverse

1 : Inverse(1)

NOTES:

1. Set to "1" when using UART mode

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