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PCF5083 データシート(PDF) 97 Page - NXP Semiconductors |
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PCF5083 データシート(HTML) 97 Page - NXP Semiconductors |
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97 / 136 page  1996 Oct 29 97 Philips Semiconductors Objective specification GSM signal processing IC PCF5083 9.4.4.5 Initialization messages for Handover mode Table 75 shows how a handover from TCH/FS to another TCH/FS has to be processed. ‘fnH’ is the first frame transmitted on the new TCH/FS in Handover mode (handover access burst transmitted in uplink). ‘fnS’ is the first frame processed in normal mode on the new TCH/FS (normal burst in up link). Table 75 Initialization procedures for handover mode Notes 1. Procedures to be started via EXEC_PROC in TDMA frame FN (TCH/FS normal mode). 2. t1s =FNs divided by 26 × 51; t2s =FNs modulo 26; t3s =FNs modulo 51. 3. The parameter nb determines the number of normal bursts to be written into the modulator output FIFO in the initialization frame. It depends on the frame number of the 1st processed frame in accordance with Table 71. fn PROCEDURES(1) NW RX TX MX . procedure calls for TCH/FS in normal mode; the correct value for NW must be looked-up in Table 70. ‘...’ 149 156 80 .. .... . procedure calls for TCH/FS in normal mode; the correct value for NW must be looked-up in Table 70. ‘...’ 149 156 80 . − 0 149 156 80 fnH − 2 CP_start_TCHFS (enc_flag, dec_flag, t1s, t2s, t3s, kc[4], nb); notes 2 and 3 MP_exec_reset (MOD_OUT_FIFO); DB_write_register(11, 0x0100, 1); set IO1 = 1 21 000 fnH − 1 procedure calls for TCH/FS in handover mode; the correct value for NWmust be looked-up in Table 70. ‘...’ 0 0 0 fnH procedure calls for TCH/FS in handover mode; the correct value for NW must be looked-up in Table 70. ‘...’ 149 156 80 . procedure calls for TCH/FS in handover mode; the correct value for NW must be looked-up in Table 70. ‘...’ 149 156 80 fns − 2 procedure calls for TCH/FS in handover mode BB_normal_burst (SCRATCH_BUFF,SCRATCH_BUFF, tsc, nb)MP_write_normal_bursts (SCRATCH_BUFF, nb); note 3 29 149 156 80 fns − 1 procedure calls for TCH/FS in normal mode; the correct value for NW must be looked-up in Table 70. ‘...’ 149 156 80 fns procedure calls for TCH/FS in normal mode; the correct value for NW must be looked-up in Table 70. ‘...’ 149 156 80 |
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