參數(shù)資料
型號(hào)： MC13xx
廠商： Motorola, Inc.
英文描述： CONVERTER, DC/DC, 1O/P, 5W, 3.3V; Power rating:5W; DC/DC Converter O/P type:Single; Voltage, input max:36V; Voltage, input min:9V; Voltage, output:3.3V; Depth, external:10.2mm; Length / Height, external:31.8mm; Width, RoHS Compliant: Yes
中文描述： 通用窄帶調(diào)頻接收器集成電路
文件頁(yè)數(shù)： 45/68頁(yè)
文件大?。?/td> 1316K
代理商： MC13XX
MC13110A/B MC13111A/B
45
MOTOROLA ANALOG IC DEVICE DATA
Data Registers
Figure 109 shows the data latch registers and addresses
which are used to select each of each registers. Latch bits to
the left (MSB) are loaded into the shift register first. The LSB
bit must always be the last bit loaded into the shift register.
Bits proceeding the register must be “0’s” as shown.
Power–Up Defaults for Data Registers
When the IC is first powered up, all latch registers are
initialized to a defined state. The device is initially placed in the
Rx mode with all mutes active. The reference counter is set to
generate a 5.0 kHz reference frequency from a 10.24 MHz
crystal. The switched capacitor filter clock counter is set
properly for operation with a 10.24 MHz crystal. The Tx and Rx
counter registers are set for USA handset channel frequency,
number 21 (Channel 6 for previous FCC 10 Channel Band).
Figure 110 shows the initial power–up states for all latch
registers.
6. (00000110)
SCF Clock Dividers Latch
(MC13111A/B only)
0
6–b Switched
Capacitor Filter
Clock Counter Latch
4–b Voltage
Reference Adjust
MSB
LSB
MSB
LSB
3–b Low Battery
Detect Threshold Select
0
0
Figure 109. Microprocessor Interface Data Latch Registers
14–b Tx Counter
MSB
LSB
1. (00000001)
2. (00000010)
3. (00000011)
4. (00000100)
5. (00000101)
6. (00000110)
Latch Address
Tx Counter Latch
Rx Counter Latch
Reference Counter Latch
Mode Control Latch
Gain Control Latch
SCF Clock Dividers Latch
(MC13110A/B only)
12–b Reference Counter
MSB
LSB
U.K.
BS
Select
Stdby
Mode
4–b Vol Control
Rx
Mode
Tx
Mute
Rx
Mute
SP
Mute
5–b Tx Gain Control
5–b Rx Gain Control
5–b CD Threshold Control
U.K.
HS
Select
0
ALC
Disable
MPU
Clk 2
Limiter
Disable
Clk
Disable
0
0
0
0
0
6–b Switched
Capacitor Filter
Clock Counter Latch
4–b Voltage
Reference Adjust
MSB
LSB
MSB
LSB
MSB
LSB
MSB
LSB
MSB
LSB
MSB
LSB
0
MPU
Clk 1
MPU
Clk 0
3–b Low Battery
Detect Threshold Select
14–b Rx Counter
MSB
LSB
0
IP3
Increase
Tx Sbl
Bypass
7. (00000111)
Auxillary Latch
0
0
0
0
0
0
0
0
0
3–b Test Mode
4–b 1st LO Capacitor Selection
Rx Sbl
Bypass
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