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): 24/136頁
文件大?。?/td> 602K
代理商: PCF5083
1996 Oct 29
24
Philips Semiconductors
Objective specification
GSM signal processing IC
PCF5083
8.3.2.2
Transmitter Timing
The transmitter timing is shown in Table 10. The start and duration times are defined by loading the named registers.
Table 10
Transmitter Timing
Notes
1.
2.
3.
The timing advance is adjusted with the value of TXSTART_REG.
TXBURSTx_REG and TXKEYx_REG (x = 0 or 1) is selected with a flag in register MODEx_REG.
Therefore (N)PDBIAS will always be active at least 4
×
32 QB prior to PDTX1.
BURST TYPE
SIGNAL
START (QB)
(1)
DURATION (QB)
(2)
TX burst
TXON
BEN
(N)PDTX1,2
TXSTART_REG + 929 = (0 to 2047) + 929
TXSTART_REG + 928 = (0 to 2047) + 928
TXSTART_REG + 1024
PDRX1,2_REG
×
32 =
(0 to 2047) + 1024
(0 to 31)
×
32
TXSTART_REG + 1024
PDBIAS_REG
×
32 =
(0 to 2047) + 1024
(0 to 31)
×
32
TXLENGTHx_REG = (1 to 255)
to end of TXON + 16
to end of TXKEY + PDDELAY_REG
(1 to 63)
to end of
TXKEY + PDDELAY_REG + 32 (1 to 63)
(N)PDBIAS
or if PDBIAS_REG < PDTX1_REG + 4 (note 3):
TXSTART_REG + 1024
(PDTX1_REG + 4)
×
32
= (0 to 2047) + 1024
(0 to 31)
×
32
TXSTART_REG + 929 + KEYON1_REG =
(0 to 2047) + 929
+
(1 to 511)
×
32
TXSTART_REG + 929 + KEYON2_REG =
(0 to 2047) + 929
+
(1 to 511)
×
32
TXSTART_REG + 1024
PDSYN_REG
×
32 =
(0 to 2047) + 1024
(1 to 31)
×
32
TXKEY1
TXKEYx_REG = (1 to 1023)
TXKEY2
to end of TXKEYx + KEYOFF_REG
(1 to 63)
to end of TXKEYx + PDDELAY_REG
(1 to 63)
PDSYN
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