UM0932 datasheet(26/43 Pages) STMICROELECTRONICS

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Host interface

UM0932

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DocID17385 Rev 3

Table 35. PHY_DataRequest: RequestData

Byte index

Bit index

Label

Description and available values

Custom / MIB

frequency

Selection of frequency to use between MIB and custom

frequency

0: TX frequency is the high or low frequency as in PHY_Config

(Table 54) MIB object

1: TX frequency is specified in bytes [1

 3] (TX frequency)

Frequency overwrite

Selection of PHY_Config MIB object overwrite (Table 54). This

field is taken into account if the Custom / MIB frequency” bit is

equal to “1” only.

0: TX frequency expressed in the following bytes (1 – 3) won't

overwrite the frequency in PHY_Config (Table 54) MIB object

1: TX frequency expressed in the following bytes (1 – 3)

overwrites frequency in PHY_Config (Table 54) MIB object

Frequency set

Selection of frequency in PHY_Config MIB object

0: TX frequency is the LowFrequency in PHY_Config MIB

object

1: TX frequency is the HighFrequency in PHY_Config MIB

object

Gain selector

Selection of TX gain for frame transmission

0: TX gain set as in PHY Config MIB object (TX Gain parameter

(Table 54))

1: TX gain is specified in the following TX gain byte (2 or 4)

4-6

Frame modulation

Modulation of the frame to be transmitted

0: B-PSK

1: Q-PSK

2: 8-PSK

3: B-FSK

4: B-PSK coded

5: Q-PSK coded

6: Reserved

7: B-PSK coded with Peak Noise Avoidance

Zero crossing

synchronization

0: transmission frame starts on any instant

1: transmission frame start after ZC delay value defined in PHY

Config MIB object (Table 54)

1 - 3

TX Frequency

Frequency value (in Hz) that the output signal is modulated

around, to be expressed if “Custom / MIB frequency” bit is

equal to “1” only.

4 (or 1)

0 – 4

TX Gain

TX gain [·] to be expressed if Gain Selector bit is equal to “1”

only.

5 – 7

Unused

 254

(or 1

 254,

 254)

Payload

Payload to be sent (up to 254 bytes)

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