Rf Control Register; Table 16-35 Rf Control Register Description - Motorola DragonBall MC9328MX1 Reference Manual

Bluetooth Accelerator (BTA)

16.5.4.8 RF Control Register

The write-only RF Control Register controls various radio parameters such as the operation of the Joint
Detect module, tri-stating of the BT2 pin, and operation of the RSSI. Reading address 0x0021605C returns
the RF Status Register (see section 16.5.4.9). The RF Control Register bits are explained in Table 16-35.
RF_CONTROL
BIT 31 30 29
TYPE r r r
0 0 0
RESET
BIT 15 14 13
RSSIOR BIST XPOL
TYPE w w w
0 0 0
RESET
Name
Reserved
Bits 31–16
RSSIOR
Bit 15
BIST
Bit 14
XPOL
Bit 13
TX_TRI_EN
Bit 12
CLE
Bit 11
DIV
Bit 10
SEL
Bit 9
16-50
RF Control Register
28 27 26 25 24
r r r r r
0 0 0 0 0
12 11 10 9 8
TX_TRI PEAK
CLE DIV SEL
_EN _HLD
w w w w w
1 0 0 0 0
Table 16-35. RF Control Register Description
Description
Reserved—These bits are reserved and should read 0.
RSSI Override—Selects normal RSSI mode, or
whether the RSSI value is controlled by writing to
the PWM Received Signal Strength Indicator
Register (ARM Control) and displayed on BT8.
This bit must be set for this device.
BIST Mode—Sets the JD/MLSE module in normal
or BIST mode.
Rx/Tx Polarity—Changes the polarity of the
RxData and TxData signals to the radio.
Tri-State Enable—Enables/Disables the tri-state
mode of the BT2 pin when not transmitting data.
Closed Loop Enable—Enables the closed loop
for PLL.
Antenna Diversity Selection—Selects the
antenna.
Selection—Selects the operation (either diversity
selection or oscillator enable) of BT7 pin.
MC9328MX1 Reference Manual
23 22 21
r r r
0 0 0
0x0000
7 6 5
RSSI PWM_
BT5_OE BT1_CONT
_EN TX_EN
w w w
0 0 0
0x1005
0 = Normal RSSI functionality
1 = ARM controlled PWM
0 = Normal
1 = BIST mode
0 = Normal
1 = Inverted
0 = Disable tri-state when not
1 = Enable tri-state when not
0 = Tx (open loop)
1 = Rx (closed loop)
0 = Antenna 0
1 = Antenna 1
0 = Oscillator enable operation
1 = Diversity selection
Addr
0x0021605C
20 19 18 17 16
r r r r
0 0 0 0
4 3 2 1
BT11_ DELAY
AUTO_ _HOP
SPIKE _STROBE
w w w w
0 0 1 0
Settings
transmitting data
transmitting data
MOTOROLA
r
0
0
w
1