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| 型號： | TLV320AD11A |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | Codec |
| 英文描述： | 3.3 V INTEGRATED ADSL OVER POTS CODEC |
| 中文描述： | 3.3伏集成ADSL POTS和編解碼器 |
| 文件頁數(shù)： | 14/28頁 |
| 文件大小： | 412K |
| 代理商： | TLV320AD11A |
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TLV320AD11A
3.3 V INTEGRATED ADSL OVER POTS CODEC
SLWS087B – JUNE 1999 – REVISED MARCH 2000
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
register programming (continued)
SCR7 – miscellaneous control register 1
Address:0111b
Contents at reset: 00000000b
D7
D6
D5
D4
D3
D2
D1
D0
REGISTER
VALUE (HEX)
DESCRIPTION
–
–
–
–
–
–
–
1
Bypass TX DHPF (25.875 kHz)
–
–
–
–
–
–
1
–
S/W power-down RX channel
–
–
–
–
–
1
–
–
S/W power-down TX channel
–
–
–
–
1
–
–
–
Analog loop-back (TX channel) (see Note 4)
–
–
–
1
–
–
–
–
Digital loop-back (TX and EC channel) (see Note 5)
–
–
1
–
–
–
–
–
TX parallel interface (read back) test mode enable (see Note 6)
–
1
–
–
–
–
–
–
EC channel power down
1
–
–
–
–
–
–
–
EC analog loop-back
NOTES:
4. Analog loop-back: Analog output pins (TXP/TXM or ECP/ECM) are internally connected to RXP/RXM.
5. Digital loop-back: RX digital output buffer (16-bit word) is internally connected to the TX/EC digital input buffer.
6. The input digital data is read back from RX output buffer without going through DAC converter.
SCR8 – EC PAA control register
Address: 1000b
Contents at reset: 00000000b
SCR8 shares the same format with SCR1. Check with SCR1 for detail
SCR9 – RX offset control register[7:0]
Address:1001b
Contents at reset: 00000000b
SCR10 – RX offset control register [15:8]
Address:1010b
Contents at reset: 00000000b
These two registers are concatenated to form a 16-bit word in 2s complement data format. The 16-bit word is
used to adjust RX channel dc offset error. It adds to the 16-bit data from the RX digital filter before the data goes
to the RX output buffer.
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