參數(shù)資料
型號(hào): NS16C2752TVA
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類(lèi): 微控制器/微處理器
英文描述: Dual UART with 16-byte/64-byte FIFOs and up to 5 Mbit/s Data Rate
中文描述: 2 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁(yè)數(shù): 11/43頁(yè)
文件大小: 881K
代理商: NS16C2752TVA
6.0 Register Set
(Continued)
TABLE 2. NS16C2552 Register Summary
(Continued)
Reg
Addr
A2-A0
RD/
WR
BIT 7
BIT 6
BIT 5
BIT 4
Baud Rate Generator Divisor
DLL
DLL
Bit 4
Bit 3
X
X
DLM
DLM
Bit 4
Bit 3
X
X
Rsrvd
Rsrvd RXRDY
BIT 3
BIT 2
BIT 1
BIT 0
Comment
DLL
0x0
Default
DLM
0x1
Default
AFR
R/W
DLL
Bit 7
X
DLM
Bit 7
X
Rsrvd
DLL
Bit 6
X
DLM
Bit 6
X
Rsrvd
DLL
Bit 5
X
DLM
Bit 5
X
Rsrvd
DLL
Bit 2
X
DLM
Bit 2
X
DLL
Bit 1
X
DLM
Bit 1
X
DLL
Bit 0
X
DLM
Bit 0
X
Con-
current
WR
0
DREV
Bit 0
LCR[7] = 1
LCR ! 0xBF
R/W
R/W
BAUDOUT
0x2
Default
DREV
0x0
Bit 7
0
ID
Bit 7
Bit 6
0
ID
Bit 6
Bit 5
0
ID
Bit 5
Bit 4
0
ID
Bit 4
Bit 3
0
DREV
Bit 3
Sel
0
DREV
Bit 2
Sel
0
DREV
Bit 1
R
LCR[7] = 1
LCR != 0xBF
DLL = 0x00
DLM = 0x00
Enhanced Registers
IER[7:4]
IIR[5:4]
FCR[5:4]
MCR[7:5]
Bit 3
0
0
XON1
XON1
Bit 4
Bit 3
0
0
XON2
XON2
Bit 4
Bit 3
0
0
XOFF1
XOFF1 XOFF1
Bit 4
Bit 3
0
0
XOFF2
XOFF2 XOFF2
Bit 4
Bit 3
0
0
EFR
0x2
R/W
Auto
CTS
Ena
Auto
RTS
Ena
Special
Char
Sel
SW
Flow
Control
SW
Flow
Control
Bit 2
0
XON1
Bit 2
0
XON2
Bit 2
0
SW Flow
Control Bit 1
SW
Flow
Control
Bit 0
0
XON1
Bit 0
0
XON2
Bit 0
0
XOFF1
Bit 0
0
XOFF2
Bit 0
0
LCR = 0xBF
Default
XON1
0x4
Default
XON2
0x5
Default
XOFF1
0x6
Default
XOFF2
0x7
Default
0
0
0
0
R/W
XON1
Bit 7
0
XON2
Bit 7
0
XOFF1
Bit 7
0
XOFF2
Bit 7
0
XON1
Bit 6
0
XON2
Bit 6
0
XOFF1 XOFF1
Bit 6
0
XOFF2 XOFF2
Bit 6
0
XON1
Bit 5
0
XON2
Bit 5
0
XON1
Bit 1
0
XON2
Bit 1
0
XOFF1
Bit 1
0
XOFF2
Bit 1
0
R/W
R/W
Bit 5
0
Bit 2
0
R/W
Bit 5
0
Bit 2
0
Legend
Bit
Name
Default
Value
The Nomenclature of register descriptions:
Register name, address, register bit, and value example:
FCR 0x2.7:6 = 2’b11 - bits 6 and 7 of FCR are both 1.
Alternative description: FCR[7:6] = 2’b11.
‘b - binary number.
‘h - hex number.
0xNN - hex number.
n’bN - n is the number of bits; N is the bit value. Example
8’b01010111 = 8’h57 = 0x57.
6.1 RECEIVE BUFFER REGISTER (RBR)
The receiver section contains an 8-bit Receive Shift Register
(RSR) and a 16 (or 64)-byte FIFO that can be accessed
through Receive Buffer Register (RBR).
N
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