MT88E46ASR Zarlink, MT88E46ASR Datasheet - Page 20

• Manufacturer Part Number: MT88E46ASR
• Description: Caller ID CMOS 3.58MHz 3.3V/5V 20-Pin SOIC T/R
• Manufacturer: Zarlink

Specifications of MT88E46ASR

• Package: 20SOIC
• Telecommunication Standards Supported: Bellcore GR-30-CORE|SR-TSV-002476|TIA/EIA-716|TIA/EIA-777
• Fabrication Technology: CMOS
• Maximum Data Rate: 1.212 KBd
• Typical Operating Supply Voltage: 3.3|5 V
• Typical Supply Current: 4.3 mA
• Minimum Operating Temperature: -40 °C
• Maximum Operating Temperature: 85 °C
• Operating Frequency: 3.58 MHz

MT88E46
Notes:
This on-hook case application is included because a CIDCW CPE must also be capable of receiving on-hook data transmission (with ringing) from
the central office.
1) PWDN and FSKen are internal signals decoded from CB0/1/2.
2) The CPE designer may choose to enable the MT88E46 only after the end of ringing to conserve power in a battery operated CPE. CD is not
3) The microcontroller in the CPE powers down the MT88E46 after CD has become inactive.
4) The microcontroller times out if CD is not activated.
5) The DR/DET output pin is the DR signal when FSK is selected.
20
Figure 16 - Application Timing: Bellcore On-Hook Data Transmission Associated with Ringing, e.g. Calling
activated by ringing.
OSC2
(Note 1)
TIP/RING
(Note 1)
FSKen
CD
DR
DCLK
DATA
PWDN
(Note 5)
1st Ring
Note 2
A
t
PU
B
Ch. seizure
Number Delivery, Calling Name Delivery
..101010..
C
t
CP
Mark
D
Data
Data
E
t
CA
F
Note 3 Note 2
t
A = 2sec typical
B = 250-500ms
C = 250ms
D = 150ms
E = feature specific
Max C+D+E = 2.9 to 3.7sec
F ≥ 200ms
PD
2nd Ring
Note 4
Data Sheet