Z0221524ASGR50A5 Zilog, Z0221524ASGR50A5 Datasheet - Page 13

• Manufacturer Part Number: Z0221524ASGR50A5
• Description: IC MODEM CONTROLLER 44-LQFP
• Manufacturer: Zilog

Specifications of Z0221524ASGR50A5

• Data Format: V.21, V.22, V.23, Bell 103, Bell 212A
• Baud Rates: 2.4k
• Interface: Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PS001907-0904
Symbol
RXI+
AV
EE_DATA 18
EE_CLK
MUTE
RDET/
LCS
V
D
LCS_CHK 24
CID
SHTREL
OH
D
DD
GND
GND
DD
PLCC
Pin #
16
17
19
20
21
22
23
25
26
27
28
Table 1. Pin Descriptions (Continued)
LQFP
Pin #
43
44
1
2
3
4
5
6
7
8
9
10
11
Single Chip Modem with Integrated Controller, Data Pump, and AFE
Function
Receive
Differential
Analog Output
Positive
Analog Power
Speaker Mute
Control
Ring Detect
Input Line
Current Sense
Digital Power
Digital Ground
Line Current
Sense
Caller ID Relay Output
Pulse Dial
Shunt Relay
Output
Off-Hook Relay
Output
Digital Ground
Analog
Input
Input/
Output
Output
Output
Input
Output
Output
Output
Output
Direction Description
These are the analog inputs from the DAA.
I
I
Controls speaker muting.
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.
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.
This signal is used to turn on the Caller ID relay
in the DAA.
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.
This signal is used to turn on the off-hook relay
in the DAA.
2
2
C EEPROM Data.
C EEPROM Clock.
Pin Descriptions
Z02215
7