Z02215 Datasheet, PDF (13/74 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
7
Table 1. Pin Descriptions (Continued)
Symbol
RXI+
PLCC LQFP
Pin # Pin #
16 43
AV_DD
17
44
EE_DATA 18 1
EE_CLK 19 2
MUTE 20 3
RDET/ 21 4
LCS
V_DD
22 5
D_GND
23
6
LCS_CHK 24 7
CID
25 8
SHTREL 26 9
OH
27 10
D_GND
28
11
Function
Direction Description
Receive
Differential
Analog Output
Positive
Analog
Input
These are the analog inputs from the DAA.
Analog Power
Input/
Output
Output
I²C EEPROM Data.
I²C EEPROM Clock.
Speaker Mute Output
Control
Controls speaker muting.
Ring Detect Input
Input Line
Current Sense
Signals the presence of a ring signal on the
line.The LCS_CHK input is used to detect when
a parallel phone is off-hook before dialing or
when a parallel phone has been picked up while
connected. In either case when LCS goes Low,
the connection attempt is dropped with a NO
CARRIER message.
Digital Power Output
Digital Ground
Line Current
Sense
Output
This signal is used to enable the Line Current
Sense circuits in the DAA when checking for
parallel phone off-hook condition prior to taking
the phone line off-hook.
Caller ID Relay Output
This signal is used to turn on the Caller ID relay
in the DAA.
Pulse Dial
Shunt Relay
Output
Output
SHTREL works in conjunction with pulse dial
make/break. It offers extra-low resistance
across the tip and ring. When all relays are
closed, SHRTEL provides 100 Ohms (Low)
instead of 600 Ohms.
Off-Hook Relay Output
Output
This signal is used to turn on the off-hook relay
in the DAA.
Digital Ground
PS001907-0904
Pin Descriptions