ELAN EM92600CM, EM92601CP, EM92601CM, EM92600CP Datasheet
1
* This specification are subject to be changed without notice.
EM92600/1C
DUAL PLL FOR 45/48 MHZ CORDLESS PHONE
4.23.1995
EM92600/1C
DUAL PLL FOR 45/48 MHZ CORDLESS PHONE
GENERAL DESCRIPTION
The EM92600/1C series are developed for 45/48 MHz of 10 channels band frequency of cordless telephone
which is used in Mainland China. These devices are dual phase-locked loop frequency synthesizers contained
ROM counters for receive and transmit loops with two independent phase detect circuits. A common reference
oscillator and reference divider are share by the receive and transmit circuits.
Other features include a lock detect circuit for the transmit loop, illegal code default, a buffered oscillator output
for mixing purposes in the system, 5KHz tone output . The EM92601C is designed for easy MPU interface. It
provides the same features as the EM92600C , but accepts channel programming via a clocked, serial input
instead of parallel BCD inputs. The EM92600C is selected channels via machanical switches of parallel BCD
input.
FEATURES
• Include oscillation circuit with external X-TAL (10.240 MHz).
• Unlock detector.
• 5KHz output for guard tone.
• Standby mode for power saving.
• 2.5 to 5.5V supply range.
• Baseset/Handset changeable.
• Available in 16 pin DIP or SOP.
• SERIES
Part Number Package Channel Selection
EM92600CP DIP parallel
EM92600CM SOP parallel
EM92601CP DIP serial
EM92601CM SOP serial
PIN ASSIGNMENTS
EM92600C EM92601C
XTALO
MODE
SB
5K
D0
D1
D2
D3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XTALI
VDD
RIF
PDR
V
SS
PDT
LD
TIF
XTALO
MODE
SB
5K
DI
CLK
NC
EN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XTALI
VDD
RIF
PDR
V
SS
PDT
LD
TIF
* This specification are subject to be changed without notice.
EM92600/1C
DUAL PLL FOR 45/48 MHZ CORDLESS PHONE
2
4.23.1995
PIN DESCRIPTIONS
Symbol Pin No. Function
XTALO O This ouput generates reference frequency when it is connected to pin 16 with
external OSC of which frequency is 10.240MHz
MODE I Base/remote changing. Internal pull down.
V
DD
=base,VSS=remote.
SB I The standby pin is uses to save power when no transmit. Internal pull down.
High: transmit and receive active
Low: receive acts only
5K O The signal derived from the reference oscillator. 5KHz output.
FUNCTIONAL BLOCK DIAGRAM
EM92600C block diagram
EM92601C block diagram
XTAL0
V
DD
V
SS
5K
PDR
RIF
V
DD
Reference
counter
divide by 2048
Lock
detector
phase
detector
Phase
detector
14 bits divide by N
receive counter
b27-b14
MODE
D3
SB
ROM 32*28
& decoder logic
14 bits divide by N
Transmit counter
V
DD
XTAL1
LD
PDT
TIF
b13-b0
D2D1D0
XTAL0
V
DD
V
SS
5K
PDR
RIF
V
DD
Reference
counter
divide by 2048
Lock
detector
phase
detector
Phase
detector
14 bits divide by N
receive counter
b27-b14
MODE
DICLKEN
SB
ROM 32*28
& decoder logic
14 bits divide by N
Transmit counter
V
DD
XTAL1
LD
PDT
TIF
b13-b0
4 bits
latch
4 bits
S/R
Loading...