HT82M75REW/HT82K75REW
Rev. 1.00
60
June 11, 2010
RF Transceiver Interrupt Configuration
The RF Transceiver issues a hardware interrupt at the internally connected interrupt signal line named INT to the MCU
host. There are two related registers that need to be set correctly. All the interrupts are masked (disabled) by default.
The interrupt mask should be removed by setting SREG0x32 in advance. The interrupt is by default sent to the MCU
host as a falling edge signal after mask removed. The polarity can be configured by LREG0x211. The interrupt status
can be read from SREG0x31 when it is triggered.
Registers associated with Interrupt Configuration
Addr.
File
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR
0x31
ISRSTS
r
WAKEIF
r
r
RXIF
r
r
TXNIF
0000 0000
0x32
INTMSK
r
WAKEMSK
r
r
RXMSK
r
r
TXNMSK
1111 1111
0x211
IRQCTRL
r
r
r
r
r
r
IRQPOL
r
0000 0000
RF Transceiver External Power Amplifier Configuration
To enable the Power Amplifier (P.A.), users can set LREG0x22F [2:0] value to 0x001B. This register setting integrates
the P.A. enable and the RF Switch Control (TX branch, RX branch) by utilizing GPIO0, GPIO1 and GPIO2. If the RF
Transceiver is in TX mode, the GPIO0 (external P.A. enable) and GPIO1 (TX branch enable) will be pulled HIGH, and
GPIO2 (RX branch enable) will be pulled LOW. If the RF Transceiver is in RX mode, the GPIO0 and GPIO1 will be
pulled LOW, and GPIO2 will be pulled HIGH. The status of GPIO pins are automatically changed corresponding to
TX/RX mode of the RF Transceiver.
·
TX mode: [GPIO0, GPIO1, GPIO2] = [HIGH, HIGH, LOW]
·
RX mode: [GPIO0, GPIO1, GPIO2] = [LOW, HIGH, HIGH]
Registers associated with External Power Amplifier Configuration
Addr.
File
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR
0x22F
TESTMODE
MSPI
r
r
r
r
TESTMODE2
TESTMODE1
TESTMODE0
0010 1000
RF Transceiver Turbo Mode Configuration
The RF Transceiver provides 1M bps Turbo mode to transmit and receive data at a higher data rate. Turbo mode pro-
vides an added capability for applications which require more bandwidth. The application circuits need not any modifi-
cation for Turbo mode.
To use the RF Transceiver in 250k and 1M bps, the following registers need to be configured as below.
Address
Mode
Addr.
Register
Name
Descriptions
Value (hex)
250k
1M
LREG
0x206
RFCTL6
RF optimized control
0x00
0xC0
LREG
0x207
RFCTL7
RF optimized control
0xE0
0xF0
SREG
0x38
BBREG0
Enable Normal/Turbo mode
0x80
0x81
SREG
0x2A
SOFTRST
Baseband Reset
0x02
Registers associated with External Power Amplifier Configuration
Addr.
File
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR
0x2A
SOFTRST
r
r
r
r
r
r
RSTBB
RSTMAC
0000 0000
0x38
BBREG0
r
r
r
r
r
r
r
TURBO
1000 0001
0x206
RFCTRL6
TXFBW1
TXFBW0
32MXCO1
32MXCO0
BATEN
r
r
r
1111 0000
0x207
RFCTRL7
r
r
r
RXFC2
r
r
r
r
0000 0000
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