AMIS-53000 Datasheet, PDF (25/99 Pages) AMI SEMICONDUCTOR – Frequency Agile Transceiver

AMIS-53000 Frequency Agile Transceiver
Data Sheet
Figure 16: 3-Wire Serial Data Interface
5.9 System Clock
The system clock can provide a clock to the external host controller. The clock can be divided down from the 24MHz crystal frequency
of the AMIS-53000. When a design desires to use the system clock as the clock to an external host/controller, the system clock can be
output under the following:
• Will be output in RX or TX, unless the output is off in general options B (Bit 1:0).
• The output will start back up in idle mode after a packet is received.
• The output will start back up in housekeeping if wake up external host/controller is enabled in housekeeping configuration
(Bit 6).
Table 10: System Clock Control
Mode
Control
Bits
0X0D General Options B 1:0
RX
TX
Standby
2:1
General Options A
0
Idle
Idle Config
4:3
Outputs
Frequency: 12, 6, 3MHz or off
Comments
POR state: standby, idle, RX, TX
Output in standby
Clock cycles before stop
5.10 Power and Grounds
The AMIS-53000 has four different power inputs and two different grounds. This allows the design of the AMIS-53000 in an application
to separate RF power from the analog and digital power. The same applies to the grounds, where a separate ground plane for the RF
grounds can reduce the amount of noise induced into the sensitive RF circuits.
AMI Semiconductor – Aug. 05, Rev. 1.0
25
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