Z02215 Datasheet, PDF (12/74 Pages) Zilog, Inc. – Single Chip Modem with Integrated Controller, Data Pump, and Analog Front End

Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
6
Symbol
RESET
V_DD
D_GND
XTAL
EXTAL
TEST
AV_DD
TXO+
TXO–
A_GND
V_REF
A_GND
CF1
CF2
RXI–
Table 1. Pin Descriptions
PLCC LQFP
Pin # Pin #
1
28
2
29
3
30
4
31
5
32
6
33
7
34
8
35
9
36
10 37
11 38
12 39
13 40
14 41
15 42
Function
Direction Description
Reset (Active Input,
low)
Output
The RESET signal sets the modem to a RESET
state.
Digital Power
Digital Ground
Crystal
(Time-based
Output)
Output
This pin connects a parallel-resonant crystal.
This pin is left open if an external clock is used
instead of a crystal.
Crystal
(Time-based
Output)
Input
This pin connects a parallel-resonant crystal.
An external clock can be input to the device on
this pin when a crystal is not used.
Input
This pin is a test pin that must be tied to digital
ground.
Analog Power
Transmit
Differential
Analog Output
Positive
Analog
Output
The TXO+ is capable of driving a 600W
resistive load over a leased line or public
switched telephone network via a Data Access
Arrangement (DAA).
Transmit
Differential
Analog Output
Negative
Analog
Output
The TXO+ is capable of driving a 600W
resistive load over a leased line or public
switched telephone network via a Data Access
Arrangement (DAA).
Analog Ground
Reference
Analog
Voltage active Output
High
An internally generated DC voltage.
Analog Ground
Integration
Analog
Capacitor PIN 1 Input
Connect an 82pF capacitor between CF2 and
CF1 to complete the internal feedback
integration filter for improved analog A/D
performance.
Integration
Analog
Capacitor PIN 2 Input
Connect an 82pF capacitor between CF2 and
CF1 to complete the internal feedback
integration filter for improved analog A/D
performance.
Receive
Differential
Analog Output
Negative
Analog
Input
These are the analog inputs from the DAA.
PS001907-0904
Pin Descriptions