HFA3860 Datasheet, PDF (11/40 Pages) Intersil Corporation – 11 Mbps Direct Sequence Spread Spectrum Baseband Processor

HFA3860
TABLE 5. TEST MODES (Continued)
MODE DESCRIPTION TEST_CLK
TEST (7:0)
10 Bit Sync Accum Sample CLK Bit Sync Accum (7:0)
(0Ah) Lo Rate
11 Reserved
Reserved Factory Test Only
12 A/D Cal Test
Mode
A/D Cal CLK A/DCal, ED, A/DCal
Disable, ADCal (4:0)
13 Correlator I High Sample CLK Correlator I (8:1)
Rate
14 Correlator Q High Sample CLK Correlator Q (8:1)
Rate
15 Chip Error
0
Accumulator
Chip Error Accum
(14:7)
16 NCO Test Hi
Rate
Sample CLK NCO Accum (19:12)
17 Freq Test Hi Rate Sample CLK Lag Accum (18:11)
18 Carrier Phase
Error Hi Rate
Sample CLK Carrier Phase Error
(6,6:0)
19 Reserved
Sample CLK Factory Test Only
20 Reserved
Sample CLK Factory Test Only
21 I_A/D, Q_A/D
Sample CLK 0,0,I_A/D (2:0),Q_A/D
(2:0)
22 Reserved
Reserved Factory Test Only
23 Reserved
Reserved Factory Test Only
24 Reserved
Reserved Factory Test Only
25 A/D Cal Accum A/D Cal
Lo
Accum (8)
A/D Cal Accum (7:0)
26 A/D Cal Accum A/D Cal
A/D Cal Accum (16:9)
Hi
Accum (17)
27 Freq Accum Lo Freq Accum Freq Accum (14:7)
(15)
28 Reserved
Reserved Factory Test Only
29 SQ2 Monitor Hi Pulse After SQ2 (15:8)
SQ Valid
30-31 Reserved
Reserved Factory Test Only
MODE
SLEEP
RX_PE
Inactive
TX_PE
Inactive
STANDBY Inactive Inactive
TX
Inactive
Active
RX
Active
Inactive
NO CLOCK
I_CC Standby
TABLE 6. POWER DOWN MODES
RESET AT 44MHz
DEVICE STATE
Active
4mA
Both transmit and receive functions disabled. Device in sleep mode. Control
Interface is still active. Register values are maintained. Device will return to its
active state within 10µs plus settling time of AC coupling capacitors (about
5ms).
Inactive
11mA
Both transmit and receive operations disabled. Device will resume its
operational state within 1µs of RX_PE or TX_PE going active.
Inactive
15mA
Receiver operations disabled. Receiver will return in its operational state
within 1µs of RX_PE going active.
Inactive
24mA Transmitter operations disabled. Transmitter will return to its operational state
within 2 MCLKs of TX_PE going active.
Active
300µA All inputs at V_CC or GND.
4-11