name:         PCD3311
function:     DTMF/modem/tone generator
package:      DIP14,14
manufacturer: Philips

       +--()--+
  osci | 1  14| Vdd
  osco | 2  13| Vss
  mode | 3  12| d4
    d5 | 4  11| d3
strobe | 5  10| d2
  tone | 6   9| d1(sda)
    a0 | 7   8| d0(scl)
       +------+


This pinout came from the Chipdir:
http://www.chipdir.org/