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5
QQ
Pin Function (1/2)
3 7 63 1515 0
Pin
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TE
17
L 13942296513
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
www
33
34
35
.
5
http://www.xiaoyu163.com
Functional
Name
Grouping
EEPROM
System
PD
Power
Management
CLKIN
System
GND
Ground
CLKOUT
System
TESTN
TEST
RESETN
System
VCC
Power
VOLUP
System
VOLDOWN
System
CHANNELSCAN
System
RFSCANMODE
System
GND
Ground
READY
System
IDRX
System
ERROROUT
System
READYI/ERRORI
System
GND
Ground
PCLKOUT
System
GND
Ground
RVKEY1
Forward
Link
RVKEY2
Forward
Link
RVKEY3
Forward
Link
RVKEY4
Forward
Link
VCC
Power
EDO
Serial
EEPROM
EDI
Serial
EEPROM
ESK
Serial
EEPROM
ECS
Serial
EEPROM
GND
Ground
RFIN
Front-End
RESERVED
System
PLL_LE
Front-End
x
PLL_CLK
ao
Front-End
y
PLL_DATA
Front-End
i
http://www.xiaoyu163.com
6
8
IO Type
Input
Indicate the usage of a external
serial EEPROM,
1 => serial EEPROM is present
0 => serial EEPROM is absent, use
system default settings upon power
up
Input
Power Down pin
Input
24.576MHz crystal pad input
NA
Ground
Output
24.576MHz crystal pad output
Input
Test Mode Select
Input
Master reset ñ Active Low
NA
3.3 V
Input
Push button Digital Volume Up pin
Input
Push button Digital Volume Down
pin
Input
Push button Channel AutoScan pin
Output
RF Scan Mode Status Output
NA
Ground
Output
Chip ready status signal (active
high) ñ Open Drain
Input
Push button ID Receive mode
Output
System Error signal Output
Q Q
Output
Configurable READYN or ERRORN
3
6 7
1 3
signal
NA
Ground
Output
Programmable Clock Output
NA
Ground
Output
Received Forward Virtual Key 1
Output
Received Forward Virtual Key 2
Output
Received Forward Virtual Key 3
Output
Received Forward Virtual Key 4
NA
3.3 V
Input
Serial Data Output from Serial
EEPROM
Output
Serial Data Input to Serial EEPROM
Output
Serial Clock Input to Serial
EEPROM
Output
Chip Select to Serial EEPROM
(active low)
NA
Ground
Input
RF Front End Digital Output
Input
Must be tied to GND
Output
RF Module PLL Latch Enable
u163
Output
RF Module PLL Clock
Output
RF Module PLL Data
.
XW-HTD640
6
7
2 9
9 4
2 8
Description
1 5
0 5
8
2 9
9 4
m
co
7
8
9 9
A
B
C
2 8
9 9
D
E
F
71
8
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