GM6535
GM6535
60 MHz Universal Programmable
Dual PLL Frequency synthesizer
GENERAL DESCRIPTIONS
The GM6535 is a dual phase 鈥?locked loop
(PLL) frequency synthesizer especially designed for
CT-1 cordless phone applications worldwide. This
frequency synthesizer is also for any products with
frequency operation at 60 MHz or below.
The device features fully programmable
receive, transmit, reference, and auxiliary reference
counters accessed through an MCU serial interface,
this feature allows this device to operate in any CT-
1 cordless phone application.
The device consists of two independent phase
detectors for transmit and receive loops. A common
reference oscillator, driving two independent
reference frequency counters, provides independent
reference frequencies for transmit and receive loops.
The auxiliary reference counter allows the
user to select an additional reference frequency for
receive and transmit loops if required.
FEATURES
鈥?Operating Voltage Range: 2.5 to 5.5 V
鈥?Operating Temperature Range:-40 to +75隆
脡
鈥?Operating Power Consumption:3.0mA@2.5V
鈥?Maximum Operating Frequency:
60MHz@200mV
p-p
, V
DD
=2.5V
鈥?3 or 4 Pins Used for serial MCU Interface
鈥?Power Saving Mode Controlled by MCU
鈥?Lock Detect Signal
鈥?On-Chip Reference Oscillator Supports External
Crystals to 16.0 MHz
鈥?Reference Frequency Counter Division Range: 16 to
4095
鈥?Auxiliary Reference Frequency Counter Division
Range: 16 to 16,383
鈥?Transmit Counter Division Range:16 to 65,535
鈥?Receive Counter Division Range: 16 to 65,53
PIN CONFIGURATION
CLK
AD in
D in
ENB
MCUCLK
Vss
OSC
out
OSC
i
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LD
Tx PD
OUT
f
in-T
TxPS/f
Tx
VDD
RxPS/f
Rx
RxPD
o
f
in-R
CLK
AD in
D in
ENB
MCUCLK
Vss
OSC
out
OSC
i
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LD
Tx PD
OUT
f
in-T
TxPS/f
Tx
VDD
RxPS/f
Rx
RxPD
o
f
in-R
16DIP
16 SOP (150Mil)
ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to v
ss
)
Ranting
Symbol
V
DD
DC Supply Voltage
V
in
Input Voltage, all Inputs
I
in
, I
out
DC Current Drain Per Pin
I
DD
, I
SS
DC Current Drain V
DD
or V
SS
Pins
T
stg
Storage Temperature Range
1
Value
-0.5 to +6.0
-0.5 to V
DD
+0.5
10
30
-65 to + 150
Unit
V
V
mA
mA
隆 脡