參數(shù)資料
型號: PCF5083
廠商: NXP Semiconductors N.V.
英文描述: STEEL COVER
中文描述: GSM信號處理IC
文件頁數(shù): 65/136頁
文件大小: 602K
代理商: PCF5083
1996 Oct 29
65
Philips Semiconductors
Objective specification
GSM signal processing IC
PCF5083
9.3.1
P
ROCEDURE DESCRIPTION
In this section all baseband procedures offered by the DSP are listed in alphabetical order. The following naming
conventions are used throughout the description:
Value: this is a 16-bit integer parameter (call by value) or return value (e.g. training sequence code, dtx flag)
Value [SIZE]: this is an array consisting of SIZE 16-bit words. The array is transmitted word by word between the
System Controller and the DSP (e.g. FACCH msg[12])
Parameter names ending with buff_id identify a buffer in the DSP data RAM where input or output data of the
procedure is stored.
Table 58
Procedure description
DESCRIPTION
ID
PARAMETERS
RETURN
VALUES
BB_access_burst
Burst building of a random access burst in accordance with
“GSM Rec. 05.02” The burst information bits must be located in
SCRATCH_BUFF. The result is returned in SCRATCH_BUFF.
BB_normal_burst
1
Burst building of n_bursts normal bursts in accordance with
“GSM Rec. 05.02” The burst information bits must be located in the buffer
determined by info_buff_id. The result is returned in buffer burst_buff_id.
‘tsc’ is the training sequence code (range: 0 to 7)
CI_decrypt
(note 1)
2
info_buff_id
burst_buff_id
tsc
n_bursts
Decryption of the CMI values of n_bursts bursts stored in buffer
cmi_buff_id.
Note that n_bursts may be in the range from 1 to 4. If n_bursts is set to 4,
cmi_buff_id
must not
be any other than TCH_CMI_BUFF or
CCH_CMI_BUFF
3
cmi_buff_id
n_bursts
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