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.
24
23
22
21
20
19
18
17
NC
INM_DRV
NC
1
2
3
4
5
6
7
8
NC
NC
NC
INM_DRV
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
INP_DRV
NC
INP_DRV
NC
RBIAS
NC
RBIAS
NC
PWRDWN#
AVDD
NC
NC
PWRDWN#
AVDD
AVDD
OUTP_DRV
AVSS
AVDD
OUTP_DRV
AVSS
OUTM_DRV
AVSS
OUTM_DRV
AVSS
16-pin TSSOP
32-pin TQFP
DSL015_007
Figure 7. 20441 Pinout Diagrams
Table 6. 20441 Pin Signals by Group
Description Comment
Pin Name
I/O
Pin Number(s)
16 SSOP 32 TQFP
INP_DRV
I
Positive transmit output of the AFE
Negative transmit output of the AFE
Positive output of the line driver
Analog input
Analog input
Analog output
15
2
23
2
INM_DRV
I
OUTP_DRV
O
10
18
I
I
max=244mA (16 SSOP)
max=280mA (32 SSOP)
OUTM_DRV
PWRDWN#
O
Negative output of the line driver
Analog output
7
7
I
I
max=244mA (16 SSOP)
max=280mA (32 TQFP)
I
I
Power down control
(0 = power down)
Digital input (3V level)
5
4
5
4
RBIAS
POWER
AVDD
Current setting external resistor
Tied to 125kΩ resistor (+1%)
Analog supply (+5V)
Analog ground
Imax=273.2mA (16 SSOP)
6, 11
8, 9
6, 19
8, 17
I
max=309.2mA (32 TQFP)
Imax=273.2mA (16 SSOP)
max=309.2mA (32 TQFP)
AVSS
I
Doc. No. 100394B
October 19, 1999
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