DS_1x22_017
73M1822/73M1922 Data Sheet
9.3 Signal Control Functions
Table 39: Signal Control Functions
Function
Mnemonic Location
Register
Type Description
WO Transmit Boost
TXBST
DAA
0x14[7]
0x14[6:5]
0x14[3]
Used in conjunction with DAA to manage transmit level. If set to 1,
Transmit signal is increased by 6 dB. See Section 9.3.1.
WO DAA Tx Gain
Used in conjunction with TXBST to manage transmit level. See
Section 9.3.1.
RXBST
W
Received Boost
If set to 1, Receive signal is increased by 20 dB.
Default is 0.
RXG
0x14[1:0]
0x16[7]
WO Receive Gain
Sets the receive path gain/attenuation. See Table 41.
TXEN
WO Transmit Path Enable
1 = Enable Transmit Path.
0 = Disable Transmit Path. (Default)
RXEN
0x16[6]
WO Receive Path Enable
1 = Enable Receive Path.
0 = Disable Receive Path. (Default)
9.3.1 Transmit and Receive Level Control
On the transmit side, 0 dBm transmit programming at the MAFE interface results in ~0 dBm on the line. On
the receive side, 0 dBm receive signal on the line results in ~0 dBm at the MAFE interface.
On the transmit side there are three bits to adjust the transmit level: TXBST (Register 0x14[7]), DAA(1:0)
(Register 0x14[6:5]).
Table 40: Transmit Gain Control
TXBST DAA1 DAA0 Gain, nom. Units
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
+2.0
0.0
dB
dB
dB
dB
dB
dB
dB
dB
-4.0
-8.0
+8.0
+6.0
+2.0
-2.0
Rev. 1.6
55
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
