ADNK-7633 Avago Technologies US Inc., ADNK-7633 Datasheet - Page 21

• Manufacturer Part Number: ADNK-7633
• Description: A7630 Reference Design Kit
• Manufacturer: Avago Technologies US Inc.
• Type: Transceiver, Bluetooth 2.1+EDRr

Specifications of ADNK-7633

• Frequency: 2.4GHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Z-Wheel
ADNS-7630 can support both mechanical and optical
Z-wheel design. Selection of Mechanical or Optical
Z-Wheel interface can be set from EEPROM Z_Selection
register (0x0137). The Z-Wheel reporting format which
determines the vertical scroll resolution can be configured
to Z/2 or Z/4 format when using different sensitivity optical
Z-Wheel via EEPROM Z_Configuration register (0x0138).
For mechanical Z-Wheel, Z/2 format is widely used as
most of the commonly available mechanical Z-Wheel
encoders come with low sensitivity. Optical Z-Wheel
can utilize either the Z/2 or Z/4 format according to the
desired sensitivity. Z_Negate (0x0139) enables correct
Z-Wheel orientation in case ZA and ZB are swapped.
For mechanical Z-Wheel design, only ZA and ZB pins are
connected to the physical mechanical encoder. ZLED
pins should be floated (No Connect). For optical Z-Wheel
design, connect all ZA, ZB and ZLED pins appropriately to
the physical optical encoder system.
The direction of the Z-Wheel (positive or negative) based
upon the Z-Wheel’s quadrature output is shown in the
state diagram below. State is shown in the form ZB ZA.
Z-Wheel counts are reported only for transitions with + or
- signs.
Tilt-Wheel
ADNS-7630 can support Tilt Wheel function via TW1
and TW2 pins by activating it through EEPROM register
Tilt_Wheel_Enabled (0x0114). For applications without
Tilt-Wheel, TW1 (GPIO3) and TW2 (GPIO4) pins can be con-
figured as LED GPIO via the same register above.
Disclaimer: All designers and manufacturers of final product with tilt
wheel enabled must assure that they have all necessary intellectual
property rights.
Figure 15. State Diagram for Z-Wheel
21
10
No Count
Out Here

+
00
11
+
No Count
Out Here

01
Connect Button
It is a must to have a “Connect” button in a Bluetooth
mouse design to enable end users to initiate pairing/
unpairing with any Bluetooth host. Connect_Button_
Press_Duration register (0x00a4-0x00a5) allows mouse
manufacturers to define duration needed for the “Con-
nect” button to be held for a valid button pressed.
Connect “Connect” button to CONNECT pin (pin 13) for
this feature.
Discover LED Indicator
It is highly recommended for mouse manufacturers to
include a discover LED indicator in a Bluetooth mouse
design as it enables end users to know if the mouse has
entered discoverable mode successfully. See registers
0x0115-0x0119 to enable/disable discover LED support,
to assign GPIO pin to be used, to define GPIO state to turn
on the discover LED as well as the LED’s duty cycle.
Connect the physical discover LED to LED0 (GPIO5) pin or
LED1 (GPIO6) pin for this feature.
Battery LED Indicator
It is highly recommended for mouse manufacturers to
include a battery LED indicator in a Bluetooth mouse
design as it alerts end users when the battery power is
running low, and also to remind end users to change the
batteries. See registers 0x011a-0x011e, 0x0238-0x23d and
0x248 for the following configuration:
• enable/disable battery LED support
• assign GPIO pin to be used
• define GPIO state to turn on the battery LED, the LED’s
• define whether the LED is disabled before connection
Connect the physical battery LED to LED0 (GPIO5) pin or
LED1 (GPIO6) pin for this feature.
Figure 16. Timing Diagram for Z/2 and Z/4 settings
Resolution
Z-Wheel
duty cycle, the blink/rest duration, active sniff modes
and total duration
is established.
Z/2
Z/4
Z Count
Z Count
Signal
ZB
ZB
ZA
ZA
Timing Diagram
+1
+1
+1
+1
+1
+1
0
-1
-1
-1
-1
-1
-1