MDEV-868-PRC datasheet(37/55 Pages) LINX

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NVCYCLE - Non-Volatile Refresh Cycles

Non-Volatile Address = 0xC4-0xC5

These read-only non-volatile registers contain the number of lifetime

refresh cycles performed for the non-volatile memory. The minimum lifetime

refreshes is 2,000 refresh cycles. Beyond this the refreshes may not be

complete and the module’s operation can become unpredictable.

Between 8 and 150 non-volatile write operations can be made before

a refresh cycle is necessary. Writing the registers from lowest to highest

address maximizes the number of write operations per refresh cycle.

It is recommended to write the desired default values to non-volatile

memory and use the volatile registers for values that change frequently.

These registers show the total number of refresh cycles that have occurred.

This gives an indication of the remaining life expectancy of the memory.

Figure 66 shows the Non-Volatile Refresh Cycles registers.

HumPRCTM Series Non-Volatile Refresh Cycles Registers

Name

Non-Volatile

Address

Description

NVCYCLE1

0xC4

MSB of the number of refresh cycles

NVCYCLE0

0xC5

LSB of the number of refresh cycles

Figure 66: HumPRCTM Series Non-Volatile Refresh Cycles Registers

LSTATUS - Output Line Status

Volatile Address = 0xC6

This register contains the logic states of the HumPROTM indicator lines.

Many of these status lines are not connected to an external line in the

HumPRCTM Series, but this register shows their logical state. Please see the

HumPROTM Series Data guide for a full description of these lines.

Each bit in the byte that is returned by the read represents the logic state

of one of the output indicator lines. Figure 68 shows which line each bit

represents.

Figure 67: HumPRCTM Series Transceiver Output Line Status Command and Response

HumPRCTM Series Output Line Status

Read Command

Read Response

Header

Size

Escape

Address

ACK

Address

Value

0xFF

0x03

0xFE

0x46

0x06

0xC6

LSTATUS

HumPRCTM Series Output Line Status LSTATUS Values

LSTATUS Bit

Line Status

EX – Exception, 1 = exception has occurred

PA_EN – PA Enable, 1 = the transmitter is active

LNA_EN – LNA Enable, 1 = the receiver is active

CTS – Clear To Send, 1 = incoming data buffer near full

MODE_IND – Mode Indicator, 1 = RF data transfer is active (TX or RX)

BE – Buffer Empty, 1 = UART buffer is empty

Reserved

Figure 68: HumPRCTM Series Output Line Status LSTATUS Values

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