EM2420 ETC [List of Unclassifed Manufacturers], EM2420 Datasheet - Page 73
![no-image](/images/no-image-200.jpg)
EM2420
Manufacturer Part Number
EM2420
Description
2.4 GHz IEEE 802.15.4 / ZigBee RF Transceiver
Manufacturer
ETC [List of Unclassifed Manufacturers]
Datasheet
1.EM2420.pdf
(89 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
EM2420
Manufacturer:
EMBER
Quantity:
20 000
- Current page: 73 of 89
- Download datasheet (2Mb)
SECCTRL1 (0x1A) - Security Control Register
15
14:8
7
6:0
BATTMON (0x1B) – Battery Monitor Control register
15:7
6
5
4:0
Ember Part Number: 120-0049-000C
Bit
Bit
Field Name
-
SEC_TXL
-
SEC_RXL
Field Name
-
BATT_OK
BATTMON_EN
BATTMON_VOLTAGE
[4:0]
Reset
0
0
0
0
Reset
0
0
0
0
EM2420 Datasheet
R/W
W0
R/W
W0
R/W
R/W
W0
R
R/W
R/W
Description
Reserved, write as 0
Multi-purpose length byte for TX in-line security operations:
CTR : Number of cleartext bytes between length byte and the
CBC/MAC : Number of cleartext bytes between length byte and
CCM : l(a), defining the number of bytes to be authenticated but
Stand-alone : SEC_TXL has no effect
Reserved, write as 0
Multi-purpose length byte for RX in-line security operations:
CTR : Number of cleartext bytes between length byte and the
CBC/MAC : Number of cleartext bytes between length byte and
CCM : l(a), defining the number of bytes to be authenticated but
Stand-alone : SEC_RXL has no effect
Description
Reserved, write as 0
Battery monitor comparator output, read only. BATT_OK is valid
5 us after BATTMON_EN has been asserted and
BATTMON_VOLTAGE has been programmed.
0 : Power supply < Toggle Voltage
1 : Power supply > Toggle Voltage
Battery monitor enable
0 : Battery monitor is disabled
1 : Battery monitor is enabled
Battery monitor toggle voltage. The toggle voltage is given by:
V
toggle
=
first byte to be encrypted
the first byte to be authenticated
not encrypted
first byte to be decrypted
the first byte to be authenticated
not decrypted
. 1
25
V
⋅
72
−
BATTMON_VO
27
EM2420
LTAGE
Page 73 of 89
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