Specification of RTRM08 Transceiver Module Easywave I2C - ELDAT

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Specification Index 1.01 Project No. RF-Products, Controller RTRM08 Transceiver Module Easw I 2 C Page 18 Development Production S. Schreiber 2007-08-24 Register Address Register Name Description of Register 0x20 RX_LN_CH0_7 A bit mask that indicates whether a channel has learned an Easywave telegram (receive). 7007 A bit for the specific channel is set to 1 upon learning an Easywave telegram (LN_RQ and LN_PL value of the RX_MODE register, please refer to “Learning of Easywave Telegrams“ on page 21.) A specific bit is cleared upon deletion of a learned Easywave telegram (DELLN value of the RX_MODE register, please refer to “Delete Learned Easywave Telegrams“ on page 22.) Any bit is cleared when ELDAT ships the transceiver module RTRM08. • Bit 0: Channel 0 (channel number of the RX_CHANNEL register); • Bit 1: Channel 1 (channel number of the RX_CHANNEL register); • Bit 2: Channel 2 (channel number of the RX_CHANNEL register); • Bit 3: Channel 3 (channel number of the RX_CHANNEL register); • Bit 4: Channel 4 (channel number of the RX_CHANNEL register); • Bit 5: Channel 5 (channel number of the RX_CHANNEL register); • Bit 6: Channel 6 (channel number of the RX_CHANNEL register); • Bit 7: Channel 7 (channel number of the RX_CHANNEL register) 0x21 RX_LN_CH8_15 Just as the RX_LN_CH0_7 register, but for channels 8 to 15. • Bit 0: Channel 8 (channel number of the RX_CHANNEL register); • Bit 1: Channel 9 (channel number of the RX_CHANNEL register); • Bit 2: Channel 10 (channel number of the RX_CHANNEL register); • Bit 3: Channel 11 (channel number of the RX_CHANNEL register); • Bit 4: Channel 12 (channel number of the RX_CHANNEL register); • Bit 5: Channel 13 (channel number of the RX_CHANNEL register); • Bit 6: Channel 14 (channel number of the RX_CHANNEL register); • Bit 7: Channel 15 (channel number of the RX_CHANNEL register) 0x22 RX_LN_CH16_23 Just as the RX_LN_CH0_7 register, but for channels 16 to 23. • Bit 0: Channel 16 (channel number of the RX_CHANNEL register); • Bit 1: Channel 17 (channel number of the RX_CHANNEL register); • Bit 2: Channel 18 (channel number of the RX_CHANNEL register); • Bit 3: Channel 19 (channel number of the RX_CHANNEL register); • Bit 4: Channel 20 (channel number of the RX_CHANNEL register); • Bit 5: Channel 21 (channel number of the RX_CHANNEL register); • Bit 6: Channel 22 (channel number of the RX_CHANNEL register); • Bit 7: Channel 23 (channel number of the RX_CHANNEL register)
Specification Index 1.01 Project No. RF-Products, Controller RTRM08 Transceiver Module Easw I 2 C Page 19 Development Production S. Schreiber 2007-08-24 Register Address Register Name Description of Register 0x23 RX_LN_CH24_31 Just as the RX_LN_CH0_7 register, but for channels 24 to 31. Initialization on Reset 7007 • Bit 0: Channel 24 (channel number of the RX_CHANNEL register); • Bit 1: Channel 25 (channel number of the RX_CHANNEL register); • Bit 2: Channel 26 (channel number of the RX_CHANNEL register); • Bit 3: Channel 27 (channel number of the RX_CHANNEL register); • Bit 4: Channel 28 (channel number of the RX_CHANNEL register); • Bit 5: Channel 29 (channel number of the RX_CHANNEL register); • Bit 6: Channel 30 (channel number of the RX_CHANNEL register); • Bit 7: Channel 31 (channel number of the RX_CHANNEL register) After a reset the transceiver module is in power down state, and the transceiver is switched off. The / REQ output is low. The RX_MODE register is set to the PWD_RST value. The I 2 C master can set the RX_MODE register to the PWD value; the / REQ output goes high then. The PWD_RST mode is intended to recognize an occurred reset (due to a malfunction or a power fail) by the asserted / REQ output. Receiving of Easywave Telegrams The RX_MODE register must be set to the RX_RQ value or the RX_PL value (Recevive Mode). If the RX_MODE register is RX_PL, the / REQ output is always inactive (high). If the RX_MODE register is set to RX_RQ, the / REQ output works as described in the next paragraphs. The transceiver module maintains learned telegrams. Each learned telegram is associated with a channel. There are 32 channels. A channel can store one learned Easywave telegram (the channel is used) or a channel stores not any learned Easywave telegram (the channel is unused). There is a bit mask in the RX_LN_CH0_7, RX_LN_CH8_15, RX_LN_CH16_23, and RX_LN_CH24_31 registers which indicates usage of each channel (a channel is used or unused). The transceiver module ignores a received Easywave telegram if it isn't equal to any of the learned Easywave telegrams. The / REQ output is high at first, the RX_TEL_CHANGED-bit in the RX_STATUS register is 0 (Figure 11). The module switches on its transceiver and tries receiving some Easywave telegrams. When the module receives an Easywave telegram, it does the following (Figure 11): • The / REQ output goes low, and the RX_TEL_CHANGED-bit in the RX_STATUS register is set to 1 upon one of the following conditions: • The module has started receiving an Easywave telegram which is a learned one (after a pause or after a preceding Easywave telegram). The RX_TEL_VALID-bit in the RX_STATUS register is set to 1; it indicates the begin of a new Easywave telegram. (For example the user has pushed a button of a transmitter.) The RX_CHANNEL register and the RX_BUTTON register contain the channel number (of the learned Easywave telegram) and the button number. The RX_USERDATA0
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Specification of RTRM08 Transceiver Module Easywave I2C - ELDAT

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