參數(shù)資料
型號(hào): μPD30102
廠商: NEC Corp.
英文描述: 64-/32-BIT Microprocessor(64/32位微處理器)
中文描述: 64-/32-BIT微處理器(64/32位微處理器)
文件頁(yè)數(shù): 61/112頁(yè)
文件大?。?/td> 639K
代理商: ΜPD30102
μ
PD30102
61
Preliminary Data Sheet
15. SIU (SERIAL INTERFACE UNIT)
15.1 General
SIU is a serial interface that conforms to the RS-232C communication standard and is equipped with two one-
channel interfaces, one for transmission and one for reception.
SIU is functionally compatible with the NS16550, and supports a transfer rate up to 1.152-Mbps. This unit also has
an infrared communication function that corresponds to SIR.
Table 15-1. SIU Registers
Physical Address
LCR7
R/W
Symbol
Function
0x0C00 0000
0
R
W
SIURB
SIUTH
Receive buffer register (Read)
Transmission hold register (Write)
1
R/W
SIUDLL
Division ratio low-order byte register
0x0C00 0001
0
1
R/W
R/W
SIUIE
SIUDLM
Interrupt enable register
Division ratio high-order byte register
0x0C00 0002
R
W
SIUIID
SIUFC
Interrupt identification register (Read)
FIFO control register (Write)
0x0C00 0003
0x0C00 0004
R/W
R/W
SIULC
SIUMC
Line control register
Modem control register
0x0C00 0005
0x0C00 0006
R/W
R/W
SIULS
SIUMS
Line status register
Modem status register
0x0C00 0007
0x0C00 0008
R/W
R/W
SIUSC
SIUIRSEL
Scratch register
Serial communication select register
Remark
LCR7 is bit 7 of the SIULC register.
15.2 Configuration
Figure 15-1. SIU Configuration
CPU core
BCU
SIU
piad
piwrdata
Interrupt request signal (to ICU)
Internal
External
SIRDIN
IRDOUT
Infrared
module
RxD
TxD
RS-232C
connector
siuout
Control signal (to DCU)
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