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M32C83T Datasheet(PDF) 341 Page - Renesas Technology Corp |
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M32C83T Datasheet(HTML) 341 Page - Renesas Technology Corp |
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341 / 527 page  Page 318 8 8 4 f o 6 0 0 2 , 1 3 . n a J 1 3 . 1 . v e R 1 3 1 0 - 4 3 0 0 B 9 0 J E R 21. Intelligent I/O (Group 3 Communication Function) ) T 3 8 / C 2 3 M , 3 8 / C 2 3 M ( p u o r G 3 8 / C 2 3 M Figure 21.48 G3MR Register and G3CR Register Group 3 SI/O Communication Mode Register Symbol Address After Reset G3MR 017A16 00XX 00002 RW RW RW RW RW RW RW Bit Name Function Bit Symbol Nothing is assigned. When write, set to "0". When read, its content is indeterminate. b7 b6 b5 b4 b2 b1 b3 b0 0 : Internal clock 1 : External clock GMD0 GMD1 CKDIR Communication Mode Select Bit UFORM IRS (b5 - b4) Internal/External Clock Select Bit Transfer Format Select Bit Transmit Interrupt Cause Select Bit 0 : LSB first 1 : MSB first 0 : No data is in the transmit buffer 1 : Transmission is completed : Communication unit is reset ( The ROER bit is set to "0") : Clock synchronous serial I/O mode : Do not set to this value : Do not set to this value b1 0 0 1 1 b0 0 1 0 1 TLD Transfer Data Length Select Bit 0 : 16 bits long 1 : 8 bits long Group 3 SI/O Communication Control Register Symbol Address After Reset G3CR 017B16 0000 X0002 RW RW RW RO RO RO RW RW Bit Name Function Bit Symbol Nothing is assigned. When write, set to "0". When read, its content is indeterminate. b7 b6 b5 b4 b3 b2 b1 b0 TE TXEPT RI Transmit Enable Bit TI (b3) RE IPOL OPOL Receive Complete Flag Transmit Buffer Empty Flag Receive Enable Bit 0 : No data is in the G3RB register 1 : Data is in the G3RB register 0 : Data is in the G3TB register 1 : No data is in the G3TB register Transmit Register Empty Flag 0 : Data is in transmit register (during transmission) 1 : No data is in the transmit register (transmission is completed) 0 : Transmit disable 1 : Transmit enable 0 : Receive disabled 1 : Receive enabled ISRxD Input Polarity Switch Bit ISTxD Output Polarity Switch Bit 0 : No inverse 1 : Inverse 0 : No inverse 1 : Inverse |
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