ZL49010/11, ZL49020/21, ZL49030/31
Pin Description (continued)
Pin #
4903xDD
16
4903xDC
15
4902x
7
4901x
7
Name
ESt
(ZL490x0)
Data Sheet
Description
Early Steering Output.
A logic high on ESt indicates that
a DTMF signal is present. ESt is at logic low in
powerdown state.
Delayed Steering Output.
A logic high on DStD
indicates that a valid DTMF digit has been detected. DStD
is at logic low in powerdown state.
Positive Power Supply (5 V Typ.)
Performance of the
device can be optimized by minimizing noise on the
supply rails. Decoupling capacitors across V
DD
and V
SS
are therefore recommended.
No Connection.
Pin is unconnected internally.
DStD
(ZL490x1)
18
18
8
8
V
DD
1,2,5,9,
10,11,12,
15,17,19,20
4
1,5,7,8,
10, 12,
14,16,
17
3
-
-
NC
-
2
PWDN
Power Down Input.
A logic high on this pin will power
down the device to reduce power consumption. This pin
is pulled down internally and can be left open if not used.
ACK pin should be at logic ’0’ to power down device.
Device
Type
ZL49010
ZL49011
ZL49020
ZL49021
ZL49030
ZL49031
8 Pin
x
x
x
x
18 Pin
20 Pin
PWDN
x
x
2 Pin
OSC
Ext
CLK
x
x
ESt
x
DStD
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Table 1 - Summary of ZL490x0/1 Product Family
Change Summary
The following table summarizes the changes from the July 2006 issue.
Page
2
2
Item
Figure 2
Pin Description
Description
Added ordering codes to Pin Connection diagram.
Added 20 pin description to the table.
3
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
