TLFD600 Datasheet, PDF (29/37 Pages) Texas Instruments – ADSL CODEC WITH INTEGRATED LINE DRIVER AND RECEIVER

TLFD600
ADSL CODEC WITH INTEGRATED LINE DRIVER AND RECEIVER
SLAS280B – MAY 2000 – REVISED NOVEMBER 2000
PROGRAMMING INFORMATION
INPUTS
MODESEL PIN
(PIN 10)
TOGMOD BIT
(FMR[0])
0
0
0
1
1
0
1
1
Table 12. Mode Selection Table
OUTPUT
RESULTANT
MODE
Full rate
G.lite
G.lite
Full rate
COMMENTS
RX analog and digital LPF at 1104 kHz
RX analog and digital LPF at 552 kHz
RX analog and digital LPF at 552 kHz
RX analog and digital LPF at 1104 kHz
AUXGPRC – auxiliary amplifier and GPR direction control register
Address: 01011b
D7
D6
Reserved
Reserved
Contents at reset: 00001100b
D5
D4
D3
Reserved
Reserved
GPIOC[1]
D2
GPIOC[0]
D1
AMP1EN
BIT NAME
Reserved
Reserved
Reserved
Reserved
GPIOC[1]
GPIOC[1]
GPIOC[0]
GPIOC[0]
AMP1EN
AMP2EN
Table 13. AUXGPRC Control Table
D7 D6 D5 D4 D3 D2 D1 D0
1
Reserved bit
DESCRIPTION
1
Reserved bit
1
Reserved bit
1
Reserved bit
0
Configure pin GPIO1 as output
1
Configure pin GPIO1 as input
0
Configure pin GPIO0 as output
1
Configure pin GPIO0 as input
0
Enable on-chip auxiliary amplifier 1
0 Enable on-chip auxiliary amplifier 2
NCO_DEF – numerically controlled oscillator default value register
Address: 01100b
Contents at reset: 01000000b (64 decimal)
D7
D6
D5
D4
D3
D2
Reserved
NCODEF[6]
NCODEF[5]
NCODEF[4]
NCODEF[3]
NCODEF[2]
NOTE 9: NCO_DEF register should never be written to. It always holds the default value of 64.
D1
NCODEF[1]
D0
AMP2EN
D0
NCODEF[0]
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