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Block Diagram
PIN Description
Pin No.
Symbol
Function Description
I / O
1
Fin1
RF input, channel 1.
I
2, 15
Vcc
Power supply.
Two pins are connected each other.
-
3
Charge pum p output, cha nnel 1. Charg e pu mp current is selecte d b y th e inp ut
serial data.
O
4, 13
GND
Ground. Two pins are connected.
-
5
LD
Output of lock detection. It is the open drain output.
O
6
Clock input.
7
DATA
Serial data input.
8
EN
Input of enable signal.
Serial data interface.
I
9
BO
Output of buffer amplifier. The local signal passes through the buffer amplifier.
O
10
Oscillator output.
O
11
PLL reference input.
Typically connected to a TCXO output.
I
12
Switchover terminal to contr ol time cons tant of loop filter . It is the open drain
output. When switched of
f, it
s normal output.
O
14
CP2
Charge pump output, channel 2.
O
16
Fin2
RF input, channel 2.
I
OSCO
OSCI
SW
CK
CP1
U GP214D
6-
55
Summary of Contents for MR HH475 FLT BT/EU
Page 11: ...WIRING DIAGRAM 11 ...
Page 12: ...PRINTED CIRCUIT BOARD Main PCB Top View VR2 VC1 12 ...
Page 13: ...PRINTED CIRCUIT BOARD Main PCB Bottom View L18 L20 13 ...
Page 14: ...PRINTED CIRCUIT BOARD Cradle Charger PCB View Top View Bottom View 14 ...
Page 16: ...EXPLODED VIEW for HH475 Main Part 16 ...
Page 17: ...EXPLODED VIEW for Battery and Antenna 17 ...
Page 54: ...U4 U5 324 NJM V 54 ...
Page 60: ...U401 HT1621 DICE 60 ...