sc16c852sviet NXP Semiconductors, sc16c852sviet Datasheet - Page 13

• Manufacturer Part Number: sc16c852sviet
• Description: 1.8 V Dual Uart, 20 Mbit/s Max. With 128-byte Fifos, Infrared Irda , And Xscale Vlio Bus Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SC16C852SV_1
Product data sheet
However, the user can also select 4 , 8 sampling rates (see
Rate
Programming the baud rate generator registers CLKPRES, DLM (MSB) and DLL (LSB)
provides a user capability for selecting the desired final baud rate. The example in
shows the selectable baud rate table available when using a 1.8432 MHz external clock
input with MCR[7] is 0, SAMPR[1:0] = 00b and CLKPRES = 0x00.
Table 6.
Output
baud rate
(bit/s)
50
75
110
150
300
600
1200
2400
3600
4800
7200
9600
Fig 5.
Fig 6.
(SAMPR)”) to operate at four times or two times faster than 16 sampling rate.
Crystal oscillator connection
If f
XTAL2 pin should be left unconnected when an external clock is used.
External clock connection
Baud rate generator programming table using a 1.8432 MHz clock with
MCR[7] = 0, SAMPR[1:0] = 00b and CLKPRE[3:0] = 0
XTAL1
Output
16 clock divisor
(decimal)
2304
1536
1047
768
384
192
96
48
32
24
16
12
Dual UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface
frequency is greater than 50 MHz, then a DC blocking capacitor is required.
Rev. 01 — 23 September 2008
XTAL1
1.8432 MHz
C1
22 pF
X1
f
XTAL1
XTAL2
Output
16 clock divisor
(hexadecimal)
900
600
417
300
180
C0
60
30
20
18
10
0C
C2
33 pF
100 pF
XTAL1
XTAL1
XTAL2
002aac630
1.8432 MHz
C1
22 pF
DLM
program value
(hexadecimal)
09
06
04
03
01
00
00
00
00
00
00
00
X1
XTAL2
002aaa870
SC16C852SV
Section 7.20 “Sampling
1.5 k
C2
47 pF
© NXP B.V. 2008. All rights reserved.
DLL
program value
(hexadecimal)
00
00
17
00
80
C0
60
30
20
18
10
0C
Table 6
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