Z0221524ASGR50A5 Zilog, Z0221524ASGR50A5 Datasheet - Page 41

• 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

Setting the Highest Line Rate
PS001907-0904
Modifier
@
!
;
S37 Value
0
1
2
3
4
5
6
Carrier
V.23
Bell 202, Bell 202T 1200/150 bps. Refer to the Communication Standard Options (B)
V.21, Bell 103
V.22, Bell 212A
V.22bis
Table 4. Dial Modifiers (Continued)
The connect rate can be selected by S-register S37. The following connect rates
are supported.
Table 5. S37 Register Connect Rates
Function
Wait for quiet answer. The @ modifier causes the modem to listen for silence before
continuing. The modem waits up to the length of specified time in S-register S7. If
enough (configurable by country) silence is not detected within the time period specified
in S-register S7, the modem hangs up and returns the NO ANSWER result code. If
enough silence is detected, the modem continues processing the other characters in the
dial string.
Timed break recall (Hookflash). An exclamation point (!) causes the modem to hang
up the telephone line for the length of time specified in S-register S29, then take the
telephone line off-hook again. This modifier is frequently used to access a PBX’s call
transfer function.
Return to COMMAND state after dialing. A semicolon (;) instructs the modem to return
to COMMAND state after dialing without breaking the telephone line connection and
without handshaking with the other modem. The semicolon may only be used when
calling a voice mail system that permits tones to transmit numbers when a connection is
established.
Single Chip Modem with Integrated Controller, Data Pump, and AFE
Data Rate
The Data Rate of the Last AT Command
1200/75 bps. Refer to the Communication Standard Options (B)
command for a description.
When ON-LINE, the modem recognizes the Escape Sequence (+++)
and modem commands only at 1200 bps.
command for a description.
When ON-LINE, the modem recognizes the Escape Sequence (+++)
and modem commands only at 1200 bps.
300 bps. Refer to the Communication Standard Options (B)
command for a description.
Reserved
1200 bps. Refer to the Communication Standard Options (B)
command for a description.
2400 bps
Setting the Highest Line Rate
Z02215
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