AR-11627 Datasheet, PDF (15/24 Pages) Conexant Systems, Inc – AccessRunner ADSL Modem Device Set for PCI Applications

Controller-less ADSL Modem Device Set for PCI Applications
AccessRunner
20441 ADSL Line Driver Hardware Pins and Signals
The pin assignments for the 20441 in both 16-pin TSSOP and 32-pin TQFP packages are shown in Figure 7 and
defined in Table 6.
NC
1
INM_DRV
2
NC
3
RBIAS
4
PWRDWN#
5
AVDD
6
OUTM_DRV
7
AVSS
8
16
NC
NC
1
15
INP_DRV
INM_DRV
2
14
NC
NC
3
13
NC
RBIAS
4
12
NC
PWRDWN#
5
11
AVDD
AVDD
6
10
OUTP_DRV
OUTM_DRV
7
9
AVSS
AVSS
8
24
NC
23
INP_DRV
22
NC
21
NC
20
NC
19
AVDD
18
OUTP_DRV
17
AVSS
Pin Name
INP_DRV
INM_DRV
OUTP_DRV
OUTM_DRV
PWRDWN#
RBIAS
POWER
AVDD
AVSS
16-pin TSSOP
32-pin TQFP
Figure 7. 20441 Pinout Diagrams
DSL015_007
Table 6. 20441 Pin Signals by Group
I/O
Description
I
Positive transmit output of the AFE
I
Negative transmit output of the AFE
O
Positive output of the line driver
O
Negative output of the line driver
I
Power down control
(0 = power down)
I
Current setting external resistor
Comment
Analog input
Analog input
Analog output
I_max=244mA (16 SSOP)
I_max=280mA (32 SSOP)
Analog output
I_max=244mA (16 SSOP)
I_max=280mA (32 TQFP)
Digital input (3V level)
Pin Number(s)
16 SSOP
32 TQFP
15
23
2
2
10
18
7
7
5
5
Tied to 125kΩ resistor (+1%) 4
4
Analog supply (+5V)
Analog ground
I_max=273.2mA (16 SSOP)
I_max=309.2mA (32 TQFP)
I_max=273.2mA (16 SSOP)
I_max=309.2mA (32 TQFP)
6, 11
8, 9
6, 19
8, 17
Doc. No. 100394B
Conexant
15
October 19, 1999
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