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參數資料
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: 51/136頁
文件大小: 602K
代理商: PCF5083
1996 Oct 29
51
Philips Semiconductors
Objective specification
GSM signal processing IC
PCF5083
9.1.5.2
Format of downlink data frames
The downlink data frame format is described in Table 40. Each word consists of four fields; these are described in
Table 37.
Table 37
Field descriptions
Table 38
Classification of the 16-bit samples
Table 39
Valid values for FID
Note
1.
Binary value; X = don’t care.
FIELD
DESCRIPTION
DATA
Depending on the contents of the CMD field (see Table 38), this field contains a data byte belonging to a
user or a control data block or auxiliary control information for the terminal adaptor.
This field classifies the 16-bit samples as described in the Table 38.
Synchronization signal for external (test) equipment. Marks the 20 ms speech frames. Each falling edge of
SYNC marks the beginning of a new output speech frame and with a constant offset due to internal
module processing time the rising edge of SYNC marks a new input speech frame. As soon as audio
output data are available this bit always reflects the internal speech frame timing independently of other
processing tasks of the DSP.
This field may be used by external devices to distinguish between audio and data frames. The INFO field
of word#2 contains the so called frame identification (FID); see Table 39.
CMD
SYNC
INFO
CMD FIELD
DESCRIPTION
7
6
5
4
3
0
0
0
0
0
0
0
1
1
0
The data field contains a valid data byte belonging to either a user or a control data block.
The data field contains auxiliary control information that may be used by the terminal
adaptor for synchronization purposes.
Indicates that the data field contains invalid data, which should be ignored.
Reserved for future expansion. Not used by the DSP.
1
1
1
1
1
Other combinations
FID
(1)
FRAME TYPE
00
01
1X
audio frame
data frame
reserved
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相關代理商/技術參數
參數描述
PCF5083H/001/F2 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GSM signal processing IC
PCF5083H/5V2/F3 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GSM signal processing IC
PCF5083H/F2 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GSM signal processing IC
PCF51AC128ACFUE 功能描述:32位微控制器 - MCU 32 Bit 128K FLASH 32K RAM CAN EN RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數據總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數據 RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT
PCF51AC128ACLKE 功能描述:32位微控制器 - MCU 32 Bit 128K FLASH 32K RAM CAN EN RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數據總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數據 RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT
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