TLFD500 Datasheet, PDF (17/38 Pages) Texas Instruments – 3.3 V INTEGRATED G.LITE ANALOG FRONT END

TLFD500PN
3.3 V INTEGRATED G.LITE ANALOG FRONT END
SLAS207B – JUNE 1999 – REVISED MAY 2000
Table 4. PCR-RX1 Gain (Continued)
D7 D6 D5 D4 D3 D2 D1 D0 HEX VALUE
BIT NAME
–
–
1
0
0
0
1
1
0x23
RXPGA3[5:0]
–
–
1
0
0
1
0
0
0x24
–
–
1
0
0
1
0
1
0x25
–
–
1
0
0
1
1
0
0x26
–
–
1
0
0
1
1
1
0x27
–
–
1
0
1
0
0
0
0x28
–
–
1
0
1
0
0
1
0x29
–
–
1
0
1
0
1
0
0x2A
–
–
1
0
1
0
1
1
0x2B
–
–
1
0
1
1
0
0
0x2C
–
–
1
0
1
1
0
1
0x2D
–
–
1
0
1
1
1
0
0x2E
–
–
1
0
1
1
1
1
0x2F
–
–
1
1
0
0
0
0
0x30
–
–
1
1
0
0
0
1
0x31
–
–
1
1
0
0
1
0
0x32
–
–
1
1
0
0
1
1
0x33
–
–
1
1
0
1
0
0
0x34
–
–
1
1
0
1
0
1
0x35
–
–
1
1
0
1
1
0
0x36
–
–
1
1
0
1
1
1
0x37
–
–
1
1
1
0
0
0
0x38
–
–
1
1
1
0
0
1
0x39
–
–
1
1
1
0
1
0
0x3A
–
–
1
1
1
0
1
1
0x3B
–
–
1
1
1
1
0
0
0x3C
–
–
1
1
1
1
0
1
0x3D
–
–
1
1
1
1
1
0
0x3E
–
–
1
1
1
1
1
1
0x3F
NOTE 2: The formula to convert bit value to RXPGA3 gain in dB is
RXPGA3 gain (in dB) = RXPGA3[5:0] (in decimal) x 0.25dB
Similarly one can compute the RXPGA3 [5:0] bit combination needed, given the gain in dB.
DESCRIPTION
8.75dB
9.00dB
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
INVALID
CAUTION:
Performance of the codec for invalid combination of bits is not guaranteed and such
combinations should not be used. The user should make no assumption that the code bits
will saturate to a maximum or minimum value or wrap around to a valid combination.
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