eKK6111
RF Keyboard Decorder
4 Pin Assignment
U1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
TCC
VDD
NC
VSS
/INT
/RESET
OSCI
OSCO
DATAO
CLKO
DATAI
CLKI
RxLED
SCROLL
NUMS
CAPS
NC
RFI
CHS
RFM
CS
DO/ID0
DI/ID1
SK/ID2
ER
NC
MS
CONN
eKK6111
5 Pin Descriptions
Symbol
I/O
Function
Connect with data pin of RF receiver module connection
Switch DIP for Device ID bit 0 or connect with DO pin of EEPROM
Switch DIP for Device ID bit 1 or connect with DI pin of EEPROM
Switch DIP for Device ID bit 2 or connect with SK pin of EEPROM
Connect with CS pin of EEPROM
P50
I
P60
I
P61
I / O
P62
I / O
O
I
P63
P64
Connect with push bottom
P70
O
O
O
O
I
Caps Lock Indicator
P71
NUM Lock Indicator
P72
Scroll Lock Indicator
P73
RF data receive Indicator
P74
CLOCK line for IBM communication, internal pull high
DATA line for IBM communication, internal pull high
CLOCK line for IBM communication, internal open-drain
DATA line for IBM communication, internal open-drain
Connect with 4.00MHz resonator oscillation
CLOCK Output
P75
I
P76
O
O
I
P77
OSCI
OSCO
VDD
VSS
O
I
+5V Power supply
I
Ground
6 Function Descriptions
6.1 Decoder Buffer
The decoder will buffer 16 bytes in first-in-first-out order when the system is able to
read scan codes from RF receiver module. The response codes and repeated codes
will not be buffered. If receives a multiple-byte sequence, the entire sequence must fit
into the buffer or the key data is discarded and a buffer-overrun condition occurs.
2 •
Product Specification (V1.0) 11.15.2002
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
