mt9094apr1 Zarlink Semiconductor, mt9094apr1 Datasheet - Page 3

• Manufacturer Part Number: mt9094apr1
• Description: Fully Featured Digital Telephone Circuit With Embedded Dsp For Tone Generation And Hands Free Operation
• Manufacturer: Zarlink Semiconductor

NOTES:
Intel and MCS-51 are registered trademarks of Intel Corporation, Santa Clara, CA, USA.
Overview
The Functional Block Diagram of Figure 1 depicts the main operations performed within the DPhone-II. Each of
these functional blocks will be described in the sections to follow. This overview will describe some of the end-user
features which may be implemented as a direct result of the level of integration found within the DPhone-II.
Pin Description (continued)
22-33
Pin #
19,
13
14
15
16
17
18
20
21
34
35
36
37
38
39
40
41
42
43
44
HSPKR+ Non-Inverting Handset Speaker (Output). Output to the handset speaker (balanced).
HSPKR- Inverting Handset Speaker (Output). Output to the handset speaker (balanced).
DATA 2 Serial Data Transmit. In an alternate mode of operation, this pin is used for data transmit from MT9094.
DATA 1 Bidirectional Serial Data. Port for microprocessor serial data transfer compatible with MCS-51 standard
S1-S12 Segment Drivers (Output). 12 independently controlled, two level, LCD segment drivers. An in-phase
SPKR+ Non-Inverting Speaker (Output). Output to the speakerphone speaker (balanced).
SPKR-
Name
SCLK
SPKR
MIC+
MIC-
V
V
V
WD
V
NC
CS
BP
M-
IC
SSD
SSA
DD
SS
Serial Port Synchronous Clock (Input). Data clock for MCS-51 compatible microport. TTL level
compatible.
In the default mode, serial data transmit and receive are performed on the DATA 1 pin and DATA 2 is tri-
stated.
(default mode). In an alternate mode of operation, this pin becomes the data receive pin only and data
transmit is performed on the DATA 2 pin. Input level TTL compatible.
Chip Select (Input). This input signal is used to select the device for microport data transfers. Active
low. (TTL level compatible.)
Watchdog (Output). Watchdog timer output. Active high.
Internal Connection. Tie externally to V
No Connection. No internal connection to these pins.
Digital Ground. Nominally 0 volts.
signal, with respect to the BP pin, produces a non-energized LCD segment. An out-of-phase signal, with
respect to the BP pin, energizes its respective LCD segment.
Backplane Drive (Output). A two-level output voltage for biasing an LCD backplane.
Positive Power Supply (Input). Nominally 5 volts.
Inverting Speaker (Output). Output to the speakerphone speaker (balanced).
Power Supply Rail for Analog Output Drivers. Nominally 0 Volts.
Inverting Handsfree Microphone (Input). Handsfree microphone amplifier inverting input pin.
Non-inverting Handsfree Microphone (Input). Handsfree microphone amplifier non-inverting input
pin.
Analog Ground. Nominally 0 V.
Inverting Microphone (Input). Inverting input to microphone amplifier from the handset microphone.
Zarlink Semiconductor Inc.
MT9094
3
SS
for normal operation.
Description
Data Sheet