zic2410 California Eastern Laboratories, zic2410 Datasheet - Page 73

• Manufacturer Part Number: zic2410
• Description: Single-chip Solution, Compliant With Zigbee
• Manufacturer: California Eastern Laboratories

RXRFPD (RF RX PATH POWER-DOWN REGISTER, 0x2204)
This register is used to power down circuits related to reception in RF block.
Bit
0
7
6
5
4
3
Rev A
BBAMP
LNAPD
RMIXB
Name
CPPU
RMIXP
UFPD
PD
D
Charge Pump Power-up. Controls the power-up state of the CP circuit.
In the power-up state, the CP circuit is enabled. When the CPPU field is
set to ‘0’, the CP circuit is in a power-up state. See CPPD above for truth
table.
Low Noise Amplifier Power-down. With the LNAPU field, controls the
power-down state of the LNA circuit. In the power-down state, the LNA
circuit is disabled and draws no current. When the LNAPU field is set to
‘1’ and the LNAPD field is set to’0’, the LNA circuit is in the power-down
state. The following table shows the LNA circuit state based on the
values of the LNAPD and LNAPU fields.
RX Mixer Power-down. With the RMIXPU field, controls power-down
state of the RX Mixer circuit. In the power-down state, the RX Mixer
circuit is disabled and draws no current. When the RMIXPU field is set
to ‘1’ and the RMIXPD field is set to’0’, the RX Mixer circuit is in the
power-down state. The following table shows the RX Mixer circuit state
based on the values of the RMIXPD and RMIXPU fields.
Base-band Analog Amplifier Power-down. With the BBAMPPU field,
controls the power-down state of the Base-band Analog Amplifier
(BBAMP) circuit. In the power-down state, the BBAMP circuit is disabled
and draws no current. When the BBAMPPU field is set to ‘1’ and the
BBAMPPD field is set to’0’, the BBAMP circuit is in the power-down
state. The following table shows the BBAMP circuit state based on the
values of the BBAMPPD and BBAMPPU fields.
RF RX Mixer Buffer Power-down. With the RMIXBUFPU field, controls
the power-down state of the RX Mixer Buffer circuit. In the power-down
state, the RX Mixer Buffer circuit is disabled and draws no current.
When the RMIXBUFPU field is set to ‘1’ and the RMIXBUFPD field is set
to’0’, the RX Mixer Buffer circuit is in a power-down state. The following
table shows the RX Mixer Buffer circuit state based on the values of the
RMIXBUFPD and RMIXBUFPU fields.
Reserved and should be fixed to ‘0’.
BBAMPPD
RMIXBUFPD
LNAPD
RMIXPD
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
LNAPU
BBAMPPU
1
0
1
0
RMIXPU
RMIXBUFPU
Document No. 0005-05-07-00-000
1
0
1
0
1
0
1
0
ZIC2410 Datasheet
1
0
1
0
Controlled by the modem block
Always power-up state.
Always power-down state
Always power-up state.
Descriptions
Controlled by the modem block
Always power-up state.
Always power-down state
Always power-up state
Controlled by the modem block
Always power-up state.
Always power-down state
Always power-up state
Controlled by the modem block
Always power-up state.
Always power-down state
Always power-up state.
RX Mixer Buffer state
LNA state
RX Mixer state
BBAMP state
Page 73 of 119
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
Value
1
0
0
0
0
0