PRELIMINARY
CH224ATF
DAA
TIP 1
RING 2
64 SPKR
63 AGND
62 NC
61 VCC
~RESET 24
DGND 26
NC 27
DCDIND 29
RXIND 30
~DTRIND 31
TXIND 32
41 DGND
40 ~DTRTTL
39 ~DCOTTL
38 ~CTSTTL
37 ~DSRTTL
36 ~RITTL
35 ~TXDTTL
34 ~TXDTTL
33 NC
Notes: Pins 10-23, 25, 28, and 42-53 are not installed.
Figure 3. CH224ATF (Serial TTL Pinout)
©1999 Cermetek Microelectronics, Inc.
6
Document No. 607-0005 Rev.A (11/99)