- 您現(xiàn)在的位置：買賣IC網 > PDF目錄24832 > 935270053529 (NXP SEMICONDUCTORS) 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQCC44 PDF資料下載
參數資料
| 型號： | 935270053529 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQCC44 |
| 封裝： | PLASTIC, MS-018, SOT-187-2, LCC-44 |
| 文件頁數： | 4/48頁 |
| 文件大小： | 657K |
| 代理商： | 935270053529 |
第1頁第2頁第3頁當前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
Philips Semiconductors
SC16C750
Universal Asynchronous Receiver/Transmitter (UART) with 64-byte FIFO
Product data
Rev. 03 — 14 March 2003
12 of 45
9397 750 11203
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
6.5 Programmable baud rate generator
The SC16C750 supports high speed modem technologies that have increased input
data rates by employing data compression schemes. For example, a 33.6 kbit/s
modem that employs data compression may require a 115.2 kbit/s input data rate.
A 128.0 kbit/s ISDN modem that supports data compression may need an input
data rate of 460.8 kbit/s.
A single baud rate generator is provided for the transmitter and receiver, allowing
independent TX/RX channel control. The programmable Baud Rate Generator is
capable of accepting an input clock up to 48 MHz, as required for supporting a
3 Mbits/s data rate. The SC16C750 can be congured for internal or external clock
operation. For internal clock oscillator operation, an industry standard microprocessor
crystal (parallel resonant/22-33 pF load) is connected externally between the XTAL1
and XTAL2 pins (see Figure 4). Alternatively, an external clock can be connected to
the XTAL1 pin to clock the internal baud rate generator for standard or custom rates
(see Table 5).
The generator divides the input 16
× clock by any divisor from 1 to 216 1. The
SC16C750 divides the basic crystal or external clock by 16. The frequency of the
BAUDOUT output pin is exactly 16
× (16 times) of the selected baud rate
(BAUDOUT = 16 Baud Rate). Customized baud rates can be achieved by selecting
the proper divisor values for the MSB and LSB sections of baud rate generator.
Programming the Baud Rate Generator registers DLM (MSB) and DLL (LSB)
provides a user capability for selecting the desired nal baud rate. The example in
Table 5 shows selectable baud rates when using a 1.8432 MHz crystal.
For custom baud rates, the divisor value can be calculated using the following
equation:
(1)
Fig 4.
Crystal oscillator connection.
002aaa169
X1
1.8432 MHz
C1
68 pF
C2
68 pF
XT
AL1
XT
AL2
Divisor (in decimal)
XTAL1 clock frequency
serial data rate
16
×
-----------------------------------------------------------
=
相關PDF資料 |
PDF描述 |
|---|---|
| 935270053512 | 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQCC44 |
| 935270053518 | 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQCC44 |
| 935270054157 | 1 CHANNEL(S), 3M bps, SERIAL COMM CONTROLLER, PQFP64 |
| 08051C103JA74A | General Specifications |
| 935270056529 | 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQCC68 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 935270713557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC CHP |
| 935270792551 | 制造商:NXP Semiconductors 功能描述:IC BUFF DVR TRI-ST 16BIT 56VFBGA |
| 935270792557 | 制造商:NXP Semiconductors 功能描述:IC BUFF DVR TRI-ST 16BIT 56VFBGA |
| 935270793551 | 制造商:NXP Semiconductors 功能描述:IC BUS TRCVR 3-ST 16BIT 56VFBGA |
| 935270793557 | 制造商:NXP Semiconductors 功能描述:IC BUS TRCVR 3-ST 16BIT 56VFBGA |
發(fā)布緊急采購，3分鐘左右您將得到回復。