APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERSS1C31D50/D51 TECHNICAL MANUAL Seiko Epson Corporation AP-A-47(Rev. 2.00)Address Register name Bit Bit name Initial Reset R/W Remarks0x002006c2I2C_1MOD(I2C Ch.1 ModeRegister)15–8 – 0x00 – R –7–3 – 0x00 – R2 OADR10 0 H0 R/W1 GCEN 0 H0 R/W0 – 0 – R0x002006c4I2C_1BR(I2C Ch.1 Baud-RateRegister)15–8 – 0x00 – R –7 – 0 – R6–0 BRT[6:0] 0x7f H0 R/W0x002006c8I2C_1OADR(I2C Ch.1 OwnAddress Register)15–10 – 0x00 – R –9–0 OADR[9:0] 0x000 H0 R/W0x002006caI2C_1CTL(I2C Ch.1 ControlRegister)15–8 – 0x00 – R –7–6 – 0x0 – R5 MST 0 H0 R/W4 TXNACK 0 H0/S0 R/W3 TXSTOP 0 H0/S0 R/W2 TXSTART 0 H0/S0 R/W1 SFTRST 0 H0 R/W0 MODEN 0 H0 R/W0x002006ccI2C_1TXD(I2C Ch.1 TransmitData Register)15–8 – 0x00 – R –7–0 TXD[7:0] 0x00 H0 R/W0x002006ceI2C_1RXD(I2C Ch.1 ReceiveData Register)15–8 – 0x00 – R –7–0 RXD[7:0] 0x00 H0 R0x002006d0I2C_1INTF(I2C Ch.1 Statusand Interrupt FlagRegister)15–13 – 0x0 – R –12 SDALOW 0 H0 R11 SCLLOW 0 H0 R10 BSY 0 H0/S0 R9 TR 0 H0 R8 – 0 – R7 BYTEENDIF 0 H0/S0 R/W Cleared by writing 1.6 GCIF 0 H0/S0 R/W5 NACKIF 0 H0/S0 R/W4 STOPIF 0 H0/S0 R/W3 STARTIF 0 H0/S0 R/W2 ERRIF 0 H0/S0 R/W1 RBFIF 0 H0/S0 R Cleared by reading theI2C_1RXD register.0 TBEIF 0 H0/S0 R Cleared by writing to theI2C_1TXD register.0x002006d2I2C_1INTE(I2C Ch.1 InterruptEnable Register)15–8 – 0x00 – R –7 BYTEENDIE 0 H0 R/W6 GCIE 0 H0 R/W5 NACKIE 0 H0 R/W4 STOPIE 0 H0 R/W3 STARTIE 0 H0 R/W2 ERRIE 0 H0 R/W1 RBFIE 0 H0 R/W0 TBEIE 0 H0 R/W0x002006d4I2C_1TBEDMAEN(I2C Ch.1 TransmitBuffer Empty DMARequest EnableRegister)15–8 – 0x00 – R –7–4 – 0x0 – R3–0 TBEDMAEN[3:0] 0x0 H0 R/W0x002006d6I2C_1RBFDMAEN(I2C Ch.1 ReceiveBuffer Full DMARequest EnableRegister)15–8 – 0x00 – R –7–4 – 0x0 – R3–0 RBFDMAEN[3:0] 0x0 H0 R/W