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PCF5083H/F2 数据表(PDF) 93 Page - NXP Semiconductors |
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PCF5083H/F2 数据表(HTML) 93 Page - NXP Semiconductors |
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93 / 136 page  1996 Oct 29 93 Philips Semiconductors Objective specification GSM signal processing IC PCF5083 Notes 1. CM_encoder_CCH is only called, if the current multiframe contains the 1st SACCH sub-block. 2. Dummy encryption to increment TDMA frame counters (skip Idle frame). 3. CM_decoder_CCH is only called, if the current multiframe contains the 4th SACCH sub-block. 4. If the BCCh identification of the neighbouring cells is not required in a certain idle frame, then up to 3 level measurements can be performed in that frame. 5. Dummy encryption to increment TDMA frame counter (skip idle frame). 6. Monitoring of a frequency correction burst from a neighbouring cell. 7. Decoding of a synchronization burst from a neighbouring cell. 23 start of FB monitoring CP_rx_normal_burst (TCH_CMI_BUFF4, tsc, agc_gain) FB_search_FCB_INT (n_int, threshold) FB_search_FCB( ) CP_rx_speech (dtx_flag, taf, test_mode) 22 149 156 80 23 continue FB monitoring CP_rx_normal_burst (TCH_CMI_BUFF4, tsc, agc_gain) FB_search_FCB( ) CP_rx_speech (dtx_flag, taf, test_mode) 17 149 156 80 23 decode SCh CP_rx_normal_burst (TCH_CMI_BUFF4, tsc, agc_gain) CP_rx_speech (dtx_flag, taf, test_mode) CP_rx_SCH( ) 17 149 156 80 23 level measurement CP_rx_normal_burst (TCH_CMI_BUFF4, tsc, agc_gain) CP_rxlev3 (agc_gain1, agc_gain2, agc_gain3); note 4 CP_rx_speech (dtx_flag, taf, test_mode) 20 149 156 80 24 CI_decrypt (SCRATCH_BUFF,1); note 5 0 149 156 1404(6) or 167(7) 25 CP_rx_normal_burst (TCH_CMI_BUFF1, tsc, agc_gain) CP_power_measure (agc_gain1) 17 80 or 0 80 or 0 80 or 0 FN MOD 26 PROCEDURES NW RX TX MX |
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