HE84G763B Datasheet, PDF (48/60 Pages) King blillion Electronics Co.,Ltd. – 8-BIT MICRO-CONTROLLER

KING BILLION ELECTRONICS CO., LTD
駿億電子股份有限公司
HE84G763B
HE80004 Series
EX_PT[7:0]
Data
Bus
Buffer
ADS_N
XRD_N
XWR_N
MCLK
MCU
I/F
CTRL
LOGIC
RESET
Trans Hoding Reg
Line Control Reg
Div Latch (MS)
Div Latch (LS)
Trans Shift Reg
SOUT
TRANSMIT
MACHINE
“Transmitter
control signal"
TRANSMITTER
TIMING
AND
CONTROL
“Transmitter
status"
BAUD-RATE
GENERATOR
BrgClk
Line Status Reg
Interrupt Id Reg
Interrupt En Reg
“Receive status"
“Receiver
control signal"
Rec Buffer Reg
RECEIVE
TIMING
AND
CONTROL
RECEIVE
MACHINE
Interrupt
Arbitrator
INTR
Rec Shift Reg
SIN
21.1. Interface Registers
Addressable extension register used to interface with MCU
Address
00H
01H
02H
03H
04H
05H
06H
Name
RBR
THR
IEIR
LCR
BRL
BRH
LSR
0
BRGE
0
Function
UART RECEIVER BUFFER
UART TRANSMITTER HOLDING REGISTER
RLSI THRI RBRI
0
ID2
ID1
SB
SP
EPS PEN STB WLS1
UART LSB of Baud Rate Register
UART MSB of Baud Rate Register
TEMT THRE BI
FE
PE
OE
IEIR: Interrupt enable/disable identification register.
LCR: Line control register.
LSR: Line status register.
ID0
WLS0
DR
Mode RESET
R 0000 0000
R/W 0000 0000
R/W 0000 0000
R/W 0000 0000
R/W 0000 0000
R/W 0000 0000
R 0110 0000
21.2.Baud Rate Configuration Register
The BRH and BRL registers hold the upper and lower bytes of 16 bit baud rate divisor and which are
readable/writable. The baud rate of UART is calculated as following:
June 1, 2004
48
V0.92
This specification is subject to change without notice. Please contact sales person for the latest version before use.