MT88E45BS1 Zarlink, MT88E45BS1 Datasheet - Page 23

• Manufacturer Part Number: MT88E45BS1
• Description: Caller ID CMOS 3.58MHz 3.3V 20-Pin SOIC Tube
• Manufacturer: Zarlink

Specifications of MT88E45BS1

• Package: 20SOIC
• Telecommunication Standards Supported: ANSI/TIA/EIA-716|ETSI/ETS 300 778-1|GR-30|SIN227|SIN242|SR-TSV-002476|TIA/EIA-777
• Fabrication Technology: CMOS
• Maximum Data Rate: 1212 Bd
• Typical Operating Supply Voltage: 3.3 V
• Typical Supply Current: 2.8 mA
• Minimum Operating Temperature: -40 °C
• Maximum Operating Temperature: 85 °C
• Operating Frequency: 3.58 MHz

MT88E45
Notes:
This on-hook case application is included because a CIDCW (off-hook) CPE should also be capable of receiving on-hook data
transmission (with ringing) from the end office.
1) PWDN and FSKen are internal signals decoded from CB0/1/2.
2) The CPE designer may choose to enable the MT88E45 only after the end of ringing to conserve power in a battery operated CPE.
3) The microcontroller in the CPE powers down the MT88E45 after CD has become inactive.
4) The microcontroller times out if CD is not activated.
5) This signal represents the mode of the DR/STD pin.
22
Figure 15 - Application Timing for Bellcore On-hook Data Transmission Associated with Ringing,
CD is not activated by ringing.
OSC2
FSKen
Note 1
TIP/RING
PWDN
Note 1
CD
DR
DCLK
DATA
Note 5
1st Ring
Note 2
A
t
PU
B
Ch. seizure
..101010..
C
t
CP
Mark
e.g., CID
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
PD
2nd Ring
Advance Information
200ms
Note 4