Справочник Пользователя для AeroComm Corporation 4424200
3/23/2006
9
3.2 E
LECTRICAL
S
PECIFICATIONS
Table 2 – DC Input Voltage Characteristics
Pin
Type
Name
High Min.
High Max.
Low Min.
Low Max.
Unit
3 I
RXD 0.2Vcc+0.9
Vcc+0.5 -0.5 0.2Vcc-0.1
V
8 I
RTS 0.2Vcc+0.9
Vcc+0.5 -0.5 0.2Vcc-0.1
V
12 I 9600_Baud 0.2Vcc+0.9
Vcc+0.5 -0.5 0.2Vcc-0.1
V
14 I
WR_ENA
0.7Vcc Vcc+1 -0.3
0.5 V
15 I UP_RESET 0.7Vcc Vcc+0.5 -0.5 0.2Vcc-0.1
V
17 I Command/Data
0.2Vcc+0.9
Vcc+0.5 -0.5 0.2Vcc-0.1
V
Table 3 – DC Output Voltage Characteristics
Pin
Type
Name
High Min.
Low Max.
Unit
2
O
TXD
Vcc-0.7 @ -30μA
0.4 @ 1.6mA
V
6
O
Hop Frame
Vcc-0.7 @ -30μA
0.4 @ 1.6mA
V
7
O
CTS
Vcc-0.7 @ -30μA
0.4 @ 1.6mA
V
12
O
Packet Frame
Vcc-0.7 @ -30μA
0.4 @ 1.6mA
V
13
O
RSSI
See Figure 1
See Figure 1
V
20
O
IN_RANGE
Vcc-0.7 @ -30μA
0.4 @ 1.6mA
V
3.3 S
YSTEM
T
IMING
Care should be taken when selecting transceiver architecture as it can have serious effects on data
rates, latency timings, and Overall System Throughput. The importance of these three characteristics
will vary from system to system and should be a strong consideration when designing the system.
rates, latency timings, and Overall System Throughput. The importance of these three characteristics
will vary from system to system and should be a strong consideration when designing the system.
3.3.1 Serial Interface Data Rate
The Serial Interface Data Rate is programmable by the Host. This is the rate the Host and transceiver
communicate over the serial bus. Possible values range from 110 bps to 288,000 bps. The only
supported mode is asynchronous – 8-bit, No Parity, 1 Start Bit, and 1 Stop Bit
communicate over the serial bus. Possible values range from 110 bps to 288,000 bps. The only
supported mode is asynchronous – 8-bit, No Parity, 1 Start Bit, and 1 Stop Bit
.