Getac Technology Corporation RX10RFID Manual De Usuario
SLOS743K – AUGUST 2011 – REVISED APRIL 2014
6.3.3
Power Modes
The chip has several power states, which are controlled by two input pins (EN and EN2) and several bits
in the chip status control register (0x00) (see
in the chip status control register (0x00) (see
and
).
Table 6-3. 3.3-V Operation Power Modes
(1)
Chip
Regulator
Typical
Status
SYS_CLK
Typical
Control
SYS_CLK
Power
Mode
EN2
EN
Control
Transmitter
Receiver
(13.56
V
DD_X
Current
Register
(60 kHz)
Out
Register
MHz)
(mA)
(0x0B)
(dBm)
(0x00)
Power Down
0
0
XX
XX
OFF
OFF
OFF
OFF
OFF
<0.001
-
Sleep Mode
1
0
XX
XX
OFF
OFF
OFF
ON
ON
0.120
-
Standby Mode at
X
1
80
00
OFF
OFF
ON
X
ON
2
-
+3.3 VDC
Mode 1 at +3.3 VDC
X
1
00
00
OFF
OFF
ON
X
ON
3
-
Mode 2 at +3.3 VDC
X
1
02
00
OFF
ON
ON
X
ON
9
-
Mode 3 (Half Power) at
X
1
30
07
ON
ON
ON
X
ON
53
14.5
+3.3 VDC
Mode 4 (Full Power) at
X
1
20
07
ON
ON
ON
X
ON
67
17
+3.3 VDC
(1)
X = Don't care
Table 6-4. 5-V Operation Power Modes
(1)
Chip
Regulator
Typical
Status
SYS_CLK
Typical
Control
SYS_CLK
Power
Mode
EN2
EN
Control
Transmitter
Receiver
(13.56
V
DD_X
Current
Register
(60 kHz)
Out
Register
MHz)
(mA)
(0x0B)
(dBm)
(0x00)
Power Down
0
0
XX
XX
OFF
OFF
OFF
OFF
OFF
<0.001
-
Sleep Mode
1
0
XX
XX
OFF
OFF
OFF
ON
ON
0.120
-
Standby Mode at
X
1
81
07
OFF
OFF
ON
X
ON
3
-
+5 VDC
Mode 1 at +5 VDC
X
1
01
07
OFF
OFF
ON
X
ON
5
-
Mode 2 at +5 VDC
X
1
03
07
OFF
ON
ON
X
ON
10.5
-
Mode 3 (Half Power) at
X
1
31
07
ON
ON
ON
X
ON
70
20
+5 VDC
Mode 4 (Full Power) at
X
1
21
07
ON
ON
ON
X
ON
130
23
+5 VDC
(1)
X = Don't care
and
show the configuration for the different power modes when using a 3.3-V or 5-V
system supply, respectively. The main reader enable signal is pin EN. When EN is set high, all of the
reader regulators are enabled, the 13.56-MHz oscillator is running and the SYS_CLK (output clock for
external micro controller) is also available.
reader regulators are enabled, the 13.56-MHz oscillator is running and the SYS_CLK (output clock for
external micro controller) is also available.
The input pin EN2 has two functions:
•
A direct connection from EN2 to V
IN
to ensure the availability of the regulated supply V
DD_X
and an
auxiliary clock signal (60 kHz, SYS_CLK) for an external MCU. This mode (EN = 0, EN2 = 1) is
intended for systems in which the MCU is also being supplied by the reader supply regulator (V
intended for systems in which the MCU is also being supplied by the reader supply regulator (V
DD_X
)
and the MCU clock is supplied by the SYS_CLK output of the reader. This allows the MCU supply and
clock to be available during sleep mode.
clock to be available during sleep mode.
•
EN2 enables the start-up of the reader system from complete power down (EN = 0, EN2 = 0). In this
case the EN input is being controlled by the MCU (or other system device) that is without supply
voltage during complete power down (thus unable to control the EN input). A rising edge applied to the
EN2 input (which has an approximately 1-V threshold level) starts the reader supply system and 13.56-
MHz oscillator (identical to condition EN = 1).
case the EN input is being controlled by the MCU (or other system device) that is without supply
voltage during complete power down (thus unable to control the EN input). A rising edge applied to the
EN2 input (which has an approximately 1-V threshold level) starts the reader supply system and 13.56-
MHz oscillator (identical to condition EN = 1).
Copyright © 2011–2014, Texas Instruments Incorporated
Detailed Description
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