MC44S803EP FREESCALE [Freescale Semiconductor, Inc], MC44S803EP Datasheet - Page 24

• Manufacturer Part Number: MC44S803EP
• Description: Low Power CMOS Broadband Tuner
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

REGULATOR TEST DATA REGISTER (REGTEST)
regulator voltages to reference voltages. A low voltage and
high voltage test can be run. The type of test is determined by
the Reg Test Low bit in the Test register. When Reg Test
Low is High the low voltage test is run. When Reg Test Low
is Low the high voltage test is run. In addition, to run either
VCO TEST REGISTER (VCOTEST)
including: first and second VCO tuning ranges and, first and
second LO lock status.
MC44S803
24
MSB
MSB
Reserved Buf1
RH1
D19
The regulator comparator test compares the internal
The VCO test shows the results of various VCO tests
D19
D18
RL1
D18
VCO Test Bits
RH2
D17
CP1
D17
D16
RL2
Synth1 Reserved Buf2
D16
D15
LD1
D14
LD2
Table 33. Regulator Test Register Field Description
D15
MSB
LSB
Regulator Test Bits
D13
Figure 26. Regulator Test Register Format
D14
Figure 27. VCO Test Register Format
D12
Bit #
0-6
10
11
12
13
14
15
16
17
18
19
7
8
9
D13
CP2
D11
Reserved
1.8 V Regulator
Low Noise Amp
Reserved
Reserved
Reserved
Synthesizer 2
Charge Pump 2
VCO Buffer 2
Reserved
Synthesizer 1
Charge Pump 1
VCO Buffer 1
Reserved
Synth2 Quad Reserved
D12
D10
Circuit
D11
D9
test the Reg Test En bit in the Test register needs to be set
high. In normal operation, when this test isn’t being run,
program the Reg Test En bit to 0. A failure of a Low test
indicates the voltage is too low. For the low test, a 1 indicates
correct operation. Similarly, a High test failure indicates the
voltage is too high, but a 0 indicates correct operation.
D10
D8
D9
D7
Bit Name
Reserved
LNA
D8
Synth2
Synth1
BUF2
BUF1
1.8 V
LNA
CP2
CP1
D6
1.8V
D7
D5
D6
D4
D5
Freescale Semiconductor
D3
D4
D3
D2
D2
D1
D1
LSB
LSB
D0
D0