参数资料
型号: EM250-RCM-R
厂商: Silicon Laboratories Inc
文件页数: 5/124页
文件大小: 0K
描述: EM250 RCM BOARD
标准包装: 12
类型: 收发器,802.15.4/Zigbee
频率: 2.4GHz
适用于相关产品: EM250
其它名称: 636-1023
EM250
Table 1. Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
Signal
VDD_24MHZ
VDD_VCO
RF_P
RF_N
VDD_RF
RF_TX_ALT_P
RF_TX_ALT_N
VDD_IF
BIAS_R
VDD_PADSA
TX_ACTIVE
Direction
Power
Power
I/O
I/O
Power
O
O
Power
I
Power
O
Description
1.8V high-frequency oscillator supply; should be connected to VREG_OUT
1.8V VCO supply; should be connected to VREG_OUT
Differential (with RF_N) receiver input/transmitter output
Differential (with RF_P) receiver input/transmitter output
1.8V RF supply (LNA and PA); should be connected to VREG_OUT
Differential (with RF_TX_ALT_N) transmitter output (optional)
Differential (with RF_TX_ALT_P) transmitter output (optional)
1.8V IF supply (mixers and filters); should be connected to VREG_OUT
Bias setting resistor
Analog pad supply (1.8V); should be connected to VREG_OUT
Logic-level control for external RX/TX switch
The EM250 baseband controls TX_ACTIVE and drives it high (1.8V) when in TX mode.
(Refer to Table 6 and section 4.2.2.)
12
13
14
VDD_PADSA
nRESET
OSC32B
Power
I
I/O
Analog pad supply (1.8V); should be connected to VREG_OUT
Active low chip reset (internal pull-up)
32.768kHz crystal oscillator. This pin should be left open when using external clock on
OSC32A or when using the internal RC Oscillator
15
16
17
18
19
OSC32A
VREG_OUT
VDD_PADS
VDD_CORE
GPIO11
I/O
Power
Power
Power
I/O
32.768kHz crystal oscillator or digital clock input. This pin can be left open when using
the internal RC Oscillator.
Regulator output (1.8V)
Pads supply (2.1-3.6V)
1.8V digital core supply; should be connected to VREG_OUT
Digital I/O
Enable GPIO11 with GPIO_CFG[7:4]
nCTS
MCLK
TMR2IA.1
I
O
I
UART CTS handshake of Serial Controller SC1
Enable SC1-4A with GPIO_CFG[7:4] , select UART with SC1_MODE
SPI master clock of Serial Controller SC1
Enable SC1-3M with GPIO_CFG[7:4] , select SPI with SC1_MODE , enable master with
SC1_SPICFG[4]
Capture Input A of Timer 2
Enable CAP2-0 with GPIO_CFG[7:4]
20
GPIO12
I/O
Digital I/O
Enable GPIO12 with GPIO_CFG[7:4]
nRTS
TMR2IB.1
O
I
UART RTS handshake of Serial Controller SC1
Enable SC1-4A with GPIO_CFG[7:4] , select UART with SC1_MODE
Capture Input B for Timer 2
Enable CAP2-0 with GPIO_CFG[7:4]
21
GPIO0
I/O
Digital I/O
Enable GPIO0 with GPIO_CFG[7:4]
Page 5
120-0082-000V Rev 1.1
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