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參數(shù)資料
| 型號： | TCM4400EGGM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT |
| 中文描述： | 的GSM / DCS的基帶和語音的A / D和D / A射頻接口電路 |
| 文件頁數(shù)： | 60/64頁 |
| 文件大?。?/td> | 888K |
| 代理商： | TCM4400EGGM |
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TCM4400E
GSM/DCS BASEBAND AND VOICE A/D
AND D/A RF INTERFACE CIRCUIT
SLWS082A – JULY 1999 – REVISED MARCH 2000
60
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
baseband uplink register (address 24)
The baseband uplink register (BULCTL) is a 3-bit register (see Table 38) that permits mismatch compensation
in the RF transmit mixer, and 1 bit (OUTLEV) to set the differential output dynamic range (V
PP
) to 2 times V
ref
when OUTLEV = 0 or to 8/15 V
ref
when OUTLEV = 1. Gain mismatches of 0 dB, –0.25 dB, –0.5 dB, and –0.75
dB are permitted between the I and Q channel as shown in Table 39.
Table 38. Uplink Register BULCTL
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Table 39. BLKCTL Register
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R=0
RESERVD
RESERVD
RESERVD
RESERVD
RESERVD
RESERVD
OUTLEV
IQSEL
R/W
R/W
G1
R/W
G0
1
<–ACCESS TYPE
1
0
0
0
1/0
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R=0
R=0
R=0
R=0
R=0
R/W
0
0
0
0
0
0
0
0
0
0
<–VALUE AT RESET
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GAIN I
GAIN I
GAIN Q
GAIN Q
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0
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0
0
0 dB
–0.25 dB
–0.50 dB
0 dB
0 dB
0 dB
0
0
1
0
0
1
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power on status register (address 25)
The power-on status register is a 9 bit read-only register which displays the status power-on / power-down of
the functions having several power on/off controls. When the function is in power-on the corresponding bit is
at 1.
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PWONCTL: POWER-ON STATUS REGISTER
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ADDRESS: 25
R/W
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1
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相關(guān)代理商/技術(shù)參數(shù) |
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| TCM4400EPET | 制造商:Rochester Electronics LLC 功能描述:GSM CELL PHONE INTERFACE CHIP (VEGA) - Tape and Reel |
| TCM4400EPN | 制造商:Rochester Electronics LLC 功能描述:GSM CELL PHONE INTERFACE CHIP (VEGA-E) - Bulk |
| TCM4400EPNR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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