CC2400 Chipcon AS, CC2400 Datasheet - Page 43

• Manufacturer Part Number: CC2400
• Description: 2.4 GHz RF Transceiver
• Manufacturer: Chipcon AS

Interfacing an External LNA or PA
CC2400
and GIO6, which can be used to control
an external LNA or PA. The functionality of
these pins are controlled through the
IOCFG register.
PA_EN,
signals
General Purpose / Test Output Control Pins
The two digital output pins, GIO1 and
GIO6, can be used as two general control
signals
IOCFG.GIO1_CFG[5:0]
IOCFG.GIO6_CFG[5:0].
GIO1_CFG = 61 sets the pin low, and
GIO1_CFG = 62 sets the pin high.
Chipcon AS
GIO1_CFG /
GIO6_CFG
[decimal]
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
26
27
28
29
30
31
has two digital output pins, GIO1
can
PA_EN_N,
SmartRF
by
Signal
LOCK_N
Reserved
Reserved
PA_EN
PA_EN_N
SYNC_RECEIVED
PKT
Reserved
Reserved
Reserved
CARRIER_SENSE_N
CRC_OK
AGC_EN
FS_PD
RX_PD
TX_PD
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PKT_ACTIVE
MDM_TX_DIN
MDM_TX_DCLK
MDM_RX_DOUT
MDM_RX_DCLK
MDM_RX_BIT_RAW
Reserved
MDM_BACKEND_EN
MDM_DEC_OVRFLW
AGC_CHANGE
be
®
multiplexed
CC2400 PRELIMINARY Datasheet (rev. 1.1), 2003-10-02
RX_PD,
writing
to
TX_PD
and
the
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
to
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
Carrier sense output (RSSI above threshold)
Description
Indicates when the PLL is in lock and device is ready for
RX/TX. Active low.
Reserved
Reserved
Active high PA enable signal
Active low PA enable signal
Set if a valid sync word has been received since last
time RX was turned on
Packet status signal See Figure 18
Reserved
Reserved
Reserved
CRC check OK after last byte read from FIFO
AGC enable signal
Frequency synthesiser power down
RX power down
TX power down
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Packet reception active
The TX data sent to modem
The TX clock used by modem
The RX data received by modem
The RX clock recovered by modem
The un-synchronized RX data received by modem
Reserved
The Backend enable signal used by modem in RX
Modem decimation overflow
Signal that toggles whenever AGC changes gain.
SmartRF
GIO1/GIO6 pin and used for controlling
the PA / LNA and T/R switch.
These two pins can also be used as two
general control signals, see Table 9.
This feature can be used to save I/O pins
on the microcontroller when the other
functions associated with these pins are
not used.
These two pins can also be used as a test
pin to monitor a lot of internal signals. This
is summarized in Table 9.
®
CC2400
Page 43 of 73