EM92600/1A
DUAL PLL FOR 46/49 MHZ CORDLESS PHONE
FUNCTIONAL BLOCK DIAGRAM
XTAL0
V
DD
V
SS
V
DD
XTAL1
V
DD
LD
PDT
Lock
detector
phase
detector
Phase
detector
PDR
Reference
counter
divide by 2048
5K
TIF
14 bits divide by N
Transmit counter
b13-b0
14 bits divide by N
receive counter
b27-b14
RIF
ROM 32*28
& decoder logic
SB
D3 D2 D1 D0 MODE
EM92600A block diagram
XTAL0
V
DD
V
SS
V
DD
XTAL1
V
DD
LD
PDT
Lock
detector
phase
detector
Phase
detector
PDR
Reference
counter
divide by 2048
5K
TIF
14 bits divide by N
Transmit counter
b13-b0
14 bits divide by N
receive counter
b27-b14
RIF
ROM 32*28
& decoder logic
4 bits
latch
4 bits
S/R
SB MODE
EN
CLK DI
EM92601A block diagram
PIN DESCRIPTIONS
Symbol
XTALO
MODE
SB
Pin No.
O
I
I
Function
This ouput generates reference frequency when it is connected to pin 16 with
external OSC of which frequency is 10.240MHz
Base/remote changing. Internal pull down.
V
DD
=base,V
SS
=remote.
The standby pin is uses to save power when no transmit. Internal pull down.
High: transmit and receive active
Low: receive acts only
The signal derived from the reference oscillator. 5KHz output.
4.23.1995
2
5K
O
* This specification are subject to be changed without notice.
EMC [ ELAN MICROELECTRONICS CORP ]
