Preliminary Information
Pin Description (continued)
Pin #
16
Name
STB/F0i
Description
MT9196
Data Strobe/Frame Pulse (Input).
For SSI mode this input determines the 8 bit timeslot
used by the device for both transmit and receive data. This active high signal has a
repetition rate of 8 kHz. Standard frame pulse definitions apply in ST-BUS mode. CMOS
level compatible input.
17
CLOCKin
Clock Input.
The clock provided to this input is used by the internal phone functions. In ST-
BUS mode this is the C4i input. In SSI synchronous mode, this is the Bit Clock input. In
SSI-asynchronous mode this is an asynchronous 4 MHz Master Clock input.
XSTL2
V
DD
Crystal Input (4.096 MHz).
Used in conjunction with the CLOCKin pin to provide the master
clock signal via external crystal.
Positive Power Supply (Input).
Nominally 5 volts.
18
19
20
21
22
23
24
25
26
27
28
HSPKR-
Inverting Handset Speaker (Output).
Output to the handset speaker (balanced).
HSPKR+
Non-Inverting Handset Speaker (Output).
Output to the handset speaker (balanced).
SPKR-
SPKR+
Inverting Speaker (Output).
Output to the speakerphone speaker (balanced).
Non-Inverting Speaker (Output).
Output to the speakerphone speaker (balanced).
V
SS
SPKR
Power Supply Rail for Speaker Driver.
Nominally 0 Volts.
AUX
out
AUX
in
MIC+
V
SSA
Auxiliary Port (Output).
Access point to the D/A (analog) signals of the receive path as
well as to the various analog inputs.
Auxiliary Port (Input).
An analog signal may be fed to the filter/codec transmit section and
various loopback paths via this pin. No external anti-aliasing is required.
Non-inverting on-hook answer back Microphone (Input).
Microphone amplifier non-
inverting input pin.
Analog Ground (Input).
Nominally 0 V.
7-129
MITEL [ MITEL NETWORKS CORPORATION ]
