eKM6611A/B
RF Mouse Tx Controller
Preliminary
GENERAL DESCRIPTOR
The eKM6611 is a transmitter (Tx) controller of RF mouse, which support the 3D, 5/3 buttons
RF mouse. And it's built-in the battery detect function. The eKM6611 is to match with RF Mouse
Rx controller for eKM6211 series (PS/2) or eKM6251 (USB+PS2).
FEATURE
Operating voltage range: 2.2V~5.5V
Available in temperature range: 0~70
Operating frequency: 4.00Mhz
Efficient encoding algorithm for RF data packets.
Device ID
Power-on is default ID.
Using the push button to random generate the 255 sets ID.
Support 2 different Z-axis type and mouse buttons
Mechanical-device type , 5 buttons (eKM6611A)
Photo-couple type, 3 buttons (eKM6611B)
Support 3 Operation Mode to saving power.
Operation mode
Standby mode
Sleep mode
To match with RF Mouse Rx controller :
eKM6211: PS/2 only
eKM6251: USB and PS/2
Package type: 16 pins DIP and SOP (300mil)
APPLICATION
3D, 5 buttons RF mouse Tx with mechanical Z-axis.
3D, 3 buttons RF Mouse Tx with photo Z-axis.
* This specification are subject to be changed without notice.
2002/12/10
1
eKM6611A/B
RF Mouse Tx Controller
Preliminary
Pin No. Symbol
I/O
Function
1
Y1
I
Y1/Z1 input pin
2
Y2
I
Y2/Z2 input pin
3 NC
- N.C.
4 /RESET
I Reset
pin
5 VSS
- Ground
pin
6 L
I L
buttons
7 R
I R
buttons
8 M
I M
buttons
9
S3
I/O
S3 control line,
10 TXD
O
RF data output
11 RFC
O
RF module control. High active
12 S1
I/O
S1 control output
13 S2
I/O
S2 control output
14 VDD
-
Voltage supply pin
15 OSCO
O
Output for crystal oscillator clock.
16 OSCI
I
External crystal input
17 X1
I
X1 input, Pre button
18 X2
I
X2 input, Next button
PIN ASSIGNMENT
U4
eKM6611
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
Y1/Z1
Y2/Z2
NC
/RESET
VSS
L/ID0
R/ID1
M/ID2
S3
X2/NEXT
X1/PRE
OSCI
OSCO
VDD
S2
S1
RFC
TXD
PIN DESCRIPTOR
FUNCTION DESCRIPTOR
There are two types of eKM6611 series : eKM6611A and eKM6611B. The Table 1.1
* This specification are subject to be changed without notice.
2002/12/10
2
eKM6611A/B
RF Mouse Tx Controller
Preliminary
summarizes the features of each type in eKM6611 series.
No.
Osc. Freq. Z axis type XY scan rate Buttons comment
eKM6611A 4.00Mhz
Mechanica
10.0KHz
5
eKM6611B 4.00Mhz
Photo
6.6KHz
3 2-diode z axis photo
1. Oscillator Frequency
The external oscillator frequency is 4.00MHz, it's have higher movement scan rate (up to
10KHz).
2. Device ID
When eKM6611 is power-on, it initial to default ID (0xFF), first. eKM6611 is using the
connect button to generate a random ID. After the button is pushed and released, the controller will
generate a new ID (from 0x01 to 0xFF) and transmit the new ID to the receiver consecutively at
least 10sec. Each power on time, the Device ID will set to 0xFF automatically. Only when the
conflict occurs, user is needs to set ID manually.
3. Z-axis type
The wheel of 3D mouse, which we used to call it Z-axis, it's detected by mechanical device or
photo-couples. eKM6611_A, and eKM6611_B is support the latter. The noise immunity of
photo-couples is better than the mechanical device. However, the photo-couples is more expensive.
4. Operation mode
The eKM6611 have three operation modes, that's Operating Mode, Standby Mode and Sleep
Mode. While the mouse is moving, the controller is working under the Operating Mode, sending the
data to RF module for transmitting. If the mouse stops over 0.5 seconds, the eKM6611 will enter
the Standby mode to reduce the consumption of power. Once the movement is detected or buttons
are pushed, the controller will return to Operating mode. After working under the Standby Mode for
an interval, it will enter Sleep Mode automatically. In Sleep Mode, the controller saves at least 95%
consumption of power in Operating Mode.
Test IC: eKM6611A
Oscillator: 4.00Mhz
Battery Voltage: 3.15V
with RF module without RF Module
Operating Mode:
10.2mA
6.7mA
Standby Mode
1.2mA
1.2mA
Sleep Mode
79A
78A
* This specification are subject to be changed without notice.
2002/12/10
3
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