CX74001(2000) 查看數據表（PDF） - Conexant Systems
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CX74001 Datasheet PDF : 16 Pages
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Rx ASIC
Table 2. Mode Control Select Signal Switching
SLEEP
CELL/
FM
AMPS
PCS
CHAIN
0
X
X
OFF (Note 1)
1
0
0
ON
1
0
1
1
1
X
Key: 0 = Low, OFF
1 = High, ON
X = Do not care
Notes: 1. All blocks except VCO, which is independently controlled by VCO_ON in this state.
CELL CDMA
CHAIN
OFF (Note 1)
ON
CX74001
PCS CDMA
CHAIN
OFF (Note 1)
ON
VCO_ON
1
1
X
X
Key: 0 = Low, OFF
1 = High, ON
X = Do not care
SLEEP
X
X
1
1
Table 3. VCO_ON Control (SIF = 0)
CELL/
PCS
0
1
0
1
CELLULAR VCO
ON
ON
PCS VCO
ON
ON
SIF
0
0
0
1
1
1
Key: 0 = Low, OFF
1 = High, ON
X = Do not care
CELL/
PCS
0
0
1
0
0
1
Table 4. SIF Control – Single IF (SLEEP = 1)
FM
VGA INPUT
AMPS
CDMA
PCS
0
ON
1
ON
X
ON
0
ON
1
ON
X
ON
VCO1
CELL
ON
ON
ON
VCO2
PCS
ON
ON
ON
101134A
Conexant - Preliminary
7
October 20, 2000
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