XW-HTD640
71
5
7
8
5
6
7
8
C
D
F
A
B
E
Pin
No
Name
Functional
Grouping
IO Type
Description
Pin Function (1/2)
1
EEPROM
System
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
2 PD Power
Management
Input
Power Down pin
3
CLKIN
System
Input
24.576MHz crystal pad input
4 GND Ground NA
Ground
5
CLKOUT
System
Output
24.576MHz crystal pad output
6
TESTN
TEST
Input
Test Mode Select
7
RESETN
System
Input
Master reset ñ Active Low
8 VCC Power NA
3.3
V
9
VOLUP
System
Input
Push button Digital Volume Up pin
10
VOLDOWN
System
Input
Push button Digital Volume Down
pin
11
CHANNELSCAN
System
Input
Push button Channel AutoScan pin
12
RFSCANMODE
System
Output
RF Scan Mode Status Output
13 GND Ground NA
Ground
14
READY
System
Output
Chip ready status signal (active
high) ñ Open Drain
15
IDRX
System
Input
Push button ID Receive mode
16
ERROROUT
System
Output
System Error signal Output
17 READYI/ERRORI
System
Output
Configurable
READYN
or
ERRORN
signal
18 GND Ground NA
Ground
19
PCLKOUT
System
Output
Programmable Clock Output
20 GND Ground NA
Ground
21 RVKEY1 Forward
Link
Output
Received Forward Virtual Key 1
22 RVKEY2 Forward
Link
Output
Received Forward Virtual Key 2
23 RVKEY3 Forward
Link
Output
Received Forward Virtual Key 3
24 RVKEY4 Forward
Link
Output
Received Forward Virtual Key 4
Power NA
3.3
V
Serial
EEPROM
Input
Serial Data Output from Serial
EEPROM
Serial
EEPROM
Output
Serial Data Input to Serial EEPROM
Serial
EEPROM
Output
Serial Clock Input to Serial
EEPROM
Serial
EEPROM
Output
Chip Select to Serial EEPROM
(active low)
30 GND Ground NA
Ground
31
RFIN
Front-End
Input
RF Front End Digital Output
32
RESERVED
System
Input
Must be tied to GND
33
PLL_LE
Front-End
Output
RF Module PLL Latch Enable
34
PLL_CLK
Front-End
Output
RF Module PLL Clock
35
PLL_DATA
Front-End
Output
RF Module PLL Data
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
