MT8960/61/62/63/64/65/66/67
ISO
2
-CMOS
MT8960/61/64/65
CSTi
DSTi
C2i
DSTo
VDD
F1i
CA
SD3
SD2
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
GNDD
VRef
GNDA
VR
ANUL
VX
VEE
SD0
SD1
CSTi
DSTi
C2i
DSTo
VDD
SD5
SD4
F1i
CA
SD3
MT8962/63/66/67
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
GNDD
VRef
GNDA
VR
ANUL
VX
VEE
SD0
SD1
SD2
18 PIN CERDIP/PDIP
20 PIN PDIP/SOIC
Figure 2 - Pin Connections
Pin Description
Pin Name
CSTi
Description
Control ST-BUS In
is a TTL-compatible digital input used to control the function of the filter/codec.
Three modes of operation may be effected by applying to this input a logic high (V
DD
), logic low
(GNDD), or an 8-bit serial word, depending on the logic states of CA and F1i.
Functions controlled are: powerdown, filter gain adjust, loopback, chip testing, SD outputs.
Data ST-BUS In
accepts the incoming 8-bit PCM word. Input is TTL-compatible.
Clock Input
is a TTL-compatible 2.048 MHz clock.
Data ST-BUS Out
is a three-state digital output driving the PCM bus with the outgoing 8-bit PCM
word.
Positive power Supply
(+5V).
Synchronization Input
is an active low digital input enabling (in conjunction with CA) the PCM input,
PCM output and digital control input. It is internally sampled on every positive edge of the clock, C2i,
and provides frame and channel synchronization.
Control Address
is a three-level digital input which enables PCM input and output and determines
into which control register (A or B) the serial data, presented to CSTi, is stored.
System Drive Output
is an open drain output of an N-channel transistor which has its source tied to
GNDA. Inactive state is open circuit.
System Drive Outputs
are open drain outputs of N-channel transistors which have their source tied
to GNDD. Inactive state is open circuit.
System Drive Outputs
are “Totempole“ CMOS outputs switching between GNDD and V
DD
. Inactive
state is logic low.
Negative power supply
(-5V).
Voice Transmit
is the analog input to the transmit filter.
Auto Null
is used to integrate an internal auto-null signal. A 0.1µF capacitor must be connected
between this pin and GNDA.
Voice Receive
is the analog output of the receive filter.
Analog ground
(0V).
Voltage Reference
input to D to A converter.
Digital ground
(0V).
DSTi
C2i
DSTo
V
DD
F1i
CA
SD3
SD4-5
SD0-2
V
EE
V
X
ANUL
V
R
GNDA
V
Ref
GNDD
6-20
MITEL [ MITEL NETWORKS CORPORATION ]
