CXD1968AR
AUTORCV_2
Read/Write
RESET: 0x18
Default R/W
Offset Address: 0x77
Bit
7
Name
ACTIVATE
Description
When set, this bit will activate the auto-recovery
functionality.
0
R/W
Used to differentiate between channel scanning (setup
mode) and channel zapping (user mode).
When set to “1”, this specifies the scanning mode.
When cleared to “0”, this specifies zapping mode.
6
SCANNING
0
R/W
The delay specified here will be used as the waiting time
before advancing the auto-recovery state machine to the
demodulator acquisition state.
00: 7ms delay
5:4 XMS_TUNER_WAIT
01
R/W
01: 49ms delay
10: 119ms delay
11: 147ms delay
This value specifies the maximum delay required to
achieve a TPS-data locked indication once the tuner is
settled, (2K mode ONLY, using 7ms increments).
Timeouts for the 8K mode are calculated automatically by
the CXD1968AR using this 2K timeout value, as shown
below.
2K mode → Maximum AGC lock time + 235 symbols →
47ms + 65.8ms
3:0 DEMOD_TIMEOUT_2K
1000
R/W
Timeout value for “demod_timeout_2k” = 66/7ms ≅ 9.
TPS_demod_timeout for 8K =
AGC_lock time + [demod_timeout_2K × 4]
The recommended value for the “demod_timeout_2k”
register is 9h (1001’b).
Note) The table below describes the receiver mode of operation with respect to the values contained in the
coreactive bit (0x00, bit5) and the activate AR bit (0x77 bit7).
Coreactive
AR active
Description
0
0
1
0
1
0
Chip idle (as in the CXD1973Q/CXD1976R)
Auto-recovery state machine active
Ordinary/Default manual mode active (as in the CXD1973Q/CXD1976R)
User has programed core active as well as setting AR active. Auto-
recovery will take over control, but this is not a recommended mode of use.
1
1
CSF_MISC
Offset Address: 0x78
Bit Name
7:1 Reserved
CSF_ENABLE
Read/Write
RESET: 0x01
Default R/W
Description
TBD
If set, channel selection filter enabled.
0
1
R/W
R/W
0
- 79 -
SONY [ SONY CORPORATION ]
