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| 型號： | TCM4400EGGM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT |
| 中文描述： | 的GSM / DCS的基帶和語音的A / D和D / A射頻接口電路 |
| 文件頁數(shù)： | 22/64頁 |
| 文件大小： | 888K |
| 代理商： | TCM4400EGGM |
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TCM4400E
GSM/DCS BASEBAND AND VOICE A/D
AND D/A RF INTERFACE CIRCUIT
SLWS082A – JULY 1999 – REVISED MARCH 2000
22
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
microcontroller serial interface timing considerations
Figure 3 shows the timing diagram for the microcontroller serial interface.
The microcontroller serial interface is designed to be compliant with 8-bit standard synchronous serial ports.
The microcontroller operates on 16-bit words; this interface consists of four pins.
UCLK:
A clock provided by the microcontroller to control access to baseband, voiceband, and auxiliary
functions registers
UDR:
An input terminal to control read and write access to baseband, voiceband, and auxiliary functions
registers
UDX:
An output terminal to transmit data from read access of baseband, voiceband, and auxiliary
functions registers
USEL:
An input terminal to enable read and write access to baseband, voiceband, and auxiliary functions
registers through the microcontroller interface
tsu10
th10
tc
tsu11
th10
tv2
th11
th9
tv1
th12
Hi-Z
Hi-Z
USEL
UCLK
UDR
UDX
Figure 3. Microcontroller Serial Interface Timing Waveforms
(Mode Rising Edge Without Delay)
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