CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 404
CS5535-UDCF
Manufacturer Part Number
CS5535-UDCF
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.CS5535-UDCF.pdf
(579 pages)
Specifications of CS5535-UDCF
Operating Temperature (min)
0C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
Available stocks
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Part Number
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Part Number:
CS5535-UDCF
Manufacturer:
AMD
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6.12.5.5 TX_FIFO Current Level Register (TXFLV)
I/O Offset
Type
Reset Value
TXFLV returns the number of bytes in the TX_FIFO.
6.12.5.6 RX_FIFO Current Level Register (RXFLV)
I/O Offset
Type
Reset Value
RXFLV returns the number of bytes in the RX_FIFO. It can be used for software debugging.
404
Bit
7:6
5:0
Bit
7:6
5:0
7
7
Name
RSVD
TFL[5:0]
Name
RSVD
RFL[5:0]
RSVD
RSVD
06h
RO
00h
07h
RO
00h
6
6
31506B
Description
Reserved. Returns 0.
Number of Bytes in TX_FIFO. These bits specify the number of bytes in the TX_FIFO.
Note:
Description
Reserved. Return 0s.
Number of Bytes in RX_FIFO. These bits specify the number of bytes in the RX_FIFO.
Note:
5
5
The contents of TXFLV and RXFLV are not frozen during CPU reads. Therefore,
invalid data could be returned if the CPU reads these registers during normal
transmitter and receiver operation. To obtain correct data, the software should
perform three consecutive reads and then take the data from the second read if
the first and second reads yield the same result. It can also be taken from the
third read if the first and second reads yield different results.
The contents of TXFLV and RXFLV are not frozen during CPU reads. Therefore,
invalid data could be returned if the CPU reads these registers during normal
transmitter and receiver operation. To obtain correct data, the software should
perform three consecutive reads and then take the data from the second read if
the first and second reads yield the same result. It can also be taken from the
third read if the first and second reads yield different results.
RXFLV Bit Descriptions
TXFLV Bit Descriptions
RXFLV Register Map
TXFLV Register Map
4
4
3
3
AMD Geode™ CS5535 Companion Device Data Book
RFL[5:0]
TFL[5:0]
2
2
UART and IR Port Register Descriptions
1
1
0
0
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