ST70136B STMICROELECTRONICS [STMicroelectronics], ST70136B Datasheet - Page 11

• Manufacturer Part Number: ST70136B
• Description: CPE ADSL ANALOG FRONT END
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

4.7.1.3 - Special Features Configuration
This register is located at the address “010” and is used to configure different blocks.
Table 4 : Adsl Configuration (address [b2:b0]=”010”)
4.7.1.4 - VCXO Control
Table 5 : VCXO DAC Value (address [b2:b0]=”011”)
4.7.1.5 - Test Only Registers
They are presently located at address “100” to “101”.
4.7.1.6 - Tone Detection Threshold Setting Register
Table 6 : Tone Detection Threshold Setting Register (address [b2:b0]=”110”)
4.7.1.7 - Status Register & tone detector
This register can be used in the case of read / write registers.
Table 7 : Status & Tone Detector Register (address [b2:b0]=”111”)
Note: 1. R/W_clear: bit is resetted to 0 by writing 0.
Reserved
VCO-DAC
Other
FVCXO
DAC value
Others
Threshold Level
Reserved
Receiver Clip indicator
Transceiver Clip indicator
Sleeping Mode
Tone Detector
Debug Mode
Software Reset
Reserved
Name
Name
Name
Name
14.13
14..7
Pos.
pos.
11.4
6..3
12
3
14..5
Pos.
Pos.
8..3
4.3
14
13
12
11
10
9
Type
type
R/W
R/W
R/W
R/W
R/W
R/W
R/W_clear
R/W_clear
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0000
Def.
def.
80H
0..0
00
1
0
1
Reserved
Enable the VCO DAC
Reserved
Filtered VCXO output
8 bits for VCO DAC.
Reserved
1000000000 Set the threshold of the tone detector
Def.
0..0
0
0
0
0
0
0
Def.
00
1: Receive Clipping occurred
1: Transmit Clipping occurred
0: disable tone detector in power down
1: enable tone detector in power down
Tone detector frequency setting
0: standard ADSL (tone 40)
1: ADSL over ISDN (tone 72)
When in normal mode “0” the CTRLOUT pin is in HIZ
and don’t care for R/W and the control access register
are always writing operation whatever on R/W pin.
When in debug mode “1” the CTRLOUT and R/W pins
are operating as defined in pin description chapter.
When set all registers are set to their default value
Reserved
Reserved
Description
Description
1: enabled
0: disabled
1 : filtered
0 : not filtered
0...0 = min. current
1...1 = max current.
Description
Description
ST70136
11/24