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| 型號： | SC16C2550B |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs |
| 中文描述： | 5伏，3.3伏和2.5伏兆5雙UART /秒（最大），16字節(jié)的FIFO |
| 文件頁數(shù)： | 15/42頁 |
| 文件大?。?/td> | 200K |
| 代理商： | SC16C2550B |
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Philips Semiconductors
SC16C2550B
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs
Product data
Rev. 02 — 14 December 2004
15 of 42
9397 750 14449
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
7.
Register descriptions
Table 7
details the assigned bit functions for the SC16C2550B internal registers. The
assigned bit functions are more fully defined in
Section 7.1
through
Section 7.10
.
[1]
[2]
[3]
The value shown in represents the register’s initialized HEX value; X = n/a.
Accessible only when LCR[7] is logic 0.
Baud rate registers accessible only when LCR[7] is logic 1.
7.1 Transmit (THR) and Receive (RHR) Holding Registers
The serial transmitter section consists of an 8-bit Transmit Hold Register (THR) and
Transmit Shift Register (TSR). The status of the THR is provided in the Line Status
Register (LSR). Writing to the THR transfers the contents of the data bus (D7-D0) to
the TSR and UART via the THR, providing that the THR is empty. The THR empty
flag in the LSR register will be set to a logic 1 when the transmitter is empty or when
data is transferred to the TSR. Note that a write operation can be performed when the
THR empty flag is set (logic 0 = at least one byte in FIFO/THR, logic 1 = FIFO/THR
empty).
Table 7:
A2
General Register Set
[2]
0
0
0
0
0
0
0
0
1
SC16C2550B internal registers
A0
Register Default
[1]
A1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RHR
THR
IER
XX
XX
00
bit 7
bit 7
0
bit 6
bit 6
0
bit 5
bit 5
0
bit 4
bit 4
0
bit 3
bit 3
modem
status
interrupt
bit 2
bit 2
receive
line
status
interrupt
XMIT
FIFO
reset
INT
priority
bit 1
stop bits
bit 1
bit 1
transmit
holding
register
interrupt
RCVR
FIFO
reset
INT
priority
bit 0
word
length
bit 1
RTS
bit 0
bit 0
receive
holding
register
0
1
0
FCR
00
RCVR
trigger
(MSB)
FIFOs
enabled
RCVR
trigger
(LSB)
FIFOs
enabled
reserved
0
reserved
0
DMA
mode
select
INT
priority
bit 2
parity
enable
FIFOs
enable
0
1
0
ISR
01
0
0
INT
status
0
1
1
LCR
00
divisor
latch
enable
0
set break set parity even
parity
word
length
bit 0
DTR
1
0
0
MCR
00
0
0
loop back OP2/INT
enable
framing
error
(OP1)
1
0
1
LSR
60
FIFO
data
error
CD
bit 7
THR and
TSR
empty
RI
bit 6
THR
empty
break
interrupt
parity
error
overrun
error
receive
data
ready
CTS
bit 0
1
1
Special Register Set
[3]
0
0
0
0
0
1
1
1
0
1
MSR
SPR
X0
FF
DSR
bit 5
CTS
bit 4
CD
bit 3
RI
bit 2
DSR
bit 1
DLL
DLM
XX
XX
bit 7
bit 15
bit 6
bit 14
bit 5
bit 13
bit 4
bit 12
bit 3
bit 11
bit 2
bit 10
bit 1
bit 9
bit 0
bit 8
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SC16C2550B_07 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs |
| SC16C2550BIA44 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C2550BIA44,512 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C2550BIA44,518 | 功能描述:UART 接口集成電路 2CH. UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C2550BIA44,518-CUT TAPE | 制造商:NXP 功能描述:SC16C2550B 5 V 3.3 V and 2.5 V Dual UART 5 Mbit/s w/ 16-byte FIFOs - PLCC44 |
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