Register 15-Test Mode Register - Analog Devices ADF7021-V Manual

REGISTER 15—TEST MODE REGISTER
ANALOG_TEST_
COx CAL_OVERRIDE
0 AUTO CAL
1 OVERRIDE GAIN
2 OVERRIDE BW
3 OVERRIDE BW AND GAIN
RD1 REG1_PD
0 NORMAL
1 POWER-DOWN
FH1
0
1
AMx ANALOG_TEST_MODES
0 BAND GAP VOLTAGE
1 40µA CURRENT FROM REG4
2 FILTER I CHANNEL: STAGE 1
3 FILTER I CHANNEL: STAGE 2
4 FILTER I CHANNEL: STAGE 1
5 FILTER Q CHANNEL: STAGE 1
6 FILTER Q CHANNEL: STAGE 2
7 FILTER Q CHANNEL: STAGE 1
8 ADC REFERENCE VOLTAGE
9 BIAS CURRENT FROM RSSI 5µA
10 FILTER COARSE CAL OSCILLATOR OUTPUT
11 ANALOG RSSI I CHANNE L
12 OFFSET LOOP +VE FBACK V (I CH)
13
SUMMED OUTPUT OF RSSI RECTIFIER+
14 SUMMED OUTPUT OF RSSI RECTIFIER–
15 BIAS CURRENT FROM BB FILTER
PMx PLL_TEST_MODES
0 NORMAL OPERATION
1 R DIV
2 N DIV
3 RCNTR/2 ON MUXOUT
4 NCNTR/2 ON MUXOUT
5 ACNTR TO MUXOUT
6 PFD PUMP UP TO MUXOUT
7 PFD PUMP DNTO MUXOUT
8 S DATA TO MUXOUT (OR SREAD)
9 ANALOG LOCK DETECT ON MUXOUT
10 END OF COARSE CAL ON MUXOUT
11 END OF FINE CAL ON MUXOUT
12
FORCE NEW PRESCALER CONFIG
FOR ALL N
13 TEST MUX SELECTS DATA
14 LOCK DETECT PRECISION
15 RESERVED
•
Analog RSSI can be viewed on the TEST_A pin by setting
ANALOG_TEST_MODES (Bits[DB27:DB24]) to 11.
•
Tx_TEST_MODES can be used to enable modulation test.
PLL_TEST_
MODES MODES
FORCE_LD_HIGH
NORMAL
FORCE
CMx CLK_MUX ON CLKOUT PIN
0 NORMAL, NO OUTPUT
1 DEMOD CLK
2
CDR CLK
3
SEQ CLK
4
BB OFFSET CLK
Σ-Δ CLK
5
6
ADC CLK
7
TxRxCLK
Figure 77. Register 15—Test Mode Register Map
Σ-Δ_TEST_
PFD/CP_
CLK_MUX MODES
TEST_MODES
PCx PFD/CP_TEST_MODES
0 DEFAULT, NO BLEED
1 (+VE) CONSTANT BLEED
2 (–VE) CONSTANT BLEED
3 (–VE) PULSED BLEED
4 (–VE) PULSE BLD, DELAY UP
5 CP PUMP UP
6 CP TRISTATE
7 CP PUMP DN
Σ-Δ_TEST_MODES
SDx
DEFAULT, 3RD-ORDER Σ-Δ, NO DITHER
0
1ST-ORDER Σ-Δ
1
2ND-ORDER Σ-Δ
2
3 DITHER TO FIRST STAGE
4 DITHER TO SECOND STAGE
5 DITHERTO THIRD STAGE
6 DITHER × 8
7 DITHER × 32
TMx Tx_TEST_MODES
0
NORMAL OPERATION
1
Tx CARRIER ONLY
f
2 Tx +
DEV
f
3 Tx –
DEV
4
Tx "1010" PATTERN
5
Tx PN9 DATA SEQUENCE
6 Tx SWD PATTERN REPEATEDLY
•
The CDR block can be bypassed by setting Rx_TEST_
MODES to 4, 5, or 6, depending on the demodulator used.
Rev. 0 | Page 59 of 60
Tx_TEST_ Rx_TEST_
MODES MODES
TONE ONLY
TONE ONLY
RTx Rx_TEST_MODES
0 NORMAL
1 SCLK, SDATA I,Q
2 REVERSE I,Q
3 I,Q TO TxRxCLK, TxRxDATA
3FSK SLICER ON TxRxDATA
4
CORRELATOR SLICER ON TxRxDATA
5
6 LINEAR SLICER ON TxRxDATA
7 SDATA TO CDR
8 ADDITIONAL FILTERING ON I,Q
9 ENABLE REG 14 DEMOD PARAMETERS
10 POWER DOWN DDT AND ED IN T/4 MODE
11 ENVELOPE DETECTOR WATCHDOG DISABLED
12 RESERVED
13 PROHIBIT CAL ACTIVE
14 FORCE CAL ACTIVE
15 ENABLE DEMOD DURING CAL
ADF7021-V
ADDRESS
BITS