28-12
MB86R02 ‘Jade-D’ Hardware Manual V1.64
28.6.9 Line status register (URTxLSR)
Address
ch0
:
FFF 14h
ch1
:
FFF 14h
ch2
:
FFF 14h
ch3
:
FFF 14h
ch4
:
FFF 14h
ch5
:
FFF 14h
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Name
(Reserved)
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Initial value
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
(Reserved)
ERRF TEMT THRE
BI
FE
PE
OE
DR
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Initial
valu
e
X
X
X
X
X
X
X
X
0
1
1
0
0
0
0
0
Bit No.
Bit name
Function
31:8
Unused
Reserved bit
7
ERRF
Error in RCVR FIFO (error in reception FIFO)
This bit is set even 1 error of parity, flaming, or break detection is in reception
FIFO.
If data including error (except the one set ERRF flag) is not in reception FIFO at
reading LSR register, this is reset.
6
TEMT
Transmitter Empty (transmission shift register empty)
When both Transmission shift register and Transmission FIFO register become
empty, TEMT is set to "1".
5
THRE
Transmitter FIFO Register Empty (transmission register empty)
When Transmission FIFO register is empty and ready to accept new data, THRE
is set to "1".
This bit is cleared at sending data to Transmission shift register.
4
BI
Break Interrupt (break reception)
This bit is set when SIN is held in "0" more than transmission time (start bit + data
bit + stop bit.) BI is reset by CPU reading this register.
3
FE
Framing Error (flaming error)
This bit is set when reception data does not have valid stop bit. FE is reset by
CPU reading this register.
2
PE
Parity Error (parity error)
This bit is set when reception data does not have valid parity bit.
PE is reset by CPU reading this register.
1
OE
Overrun Error (overrunning error)
This bit is set when reception FIFO is full and receives the next reception data.
OE is reset by CPU reading this register.
0
DR
Data Ready (reception data existed)
This bit shows 1 byte or more of data is in FIFO.
This bit is set when data is in FIFO and reset after reading all data in FIFO.
* Bit7:0 = 60h, after reset
Summary of Contents for MB86R02
Page 24: ...MB86R02 Jade D Hardware Manual V1 64 ...
Page 76: ...3 2 MB86R02 Jade D Hardware Manual V1 64 Figure 3 1 Memory map 1 ...
Page 77: ...3 3 MB86R02 Jade D Hardware Manual V1 64 Figure 3 2 Memory map 2 ...
Page 167: ...8 8 MB86R02 Jade D Hardware Manual V1 64 ...
Page 214: ...11 7 MB86R02 Jade D Hardware Manual V1 64 15 16 cycles initial value ...
Page 497: ...18 139 MB86R02 Jade D Hardware Manual V1 64 VSYNC is output 1 dot clock faster than HSYNC ...
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Page 680: ......
Page 682: ...22 2 MB86R02 Jade D Hardware Manual V1 00 FUJITSU PROPRIETARY AND CONFIDENTIAL ...
Page 811: ...29 24 MB86R02 Jade D Hardware Manual V1 64 ...