SC16C650BIBS PHILIPS [NXP Semiconductors], SC16C650BIBS Datasheet - Page 30

• Manufacturer Part Number: SC16C650BIBS
• Description: 5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 14451
Product data
Table 22:
Table 23:
[1]
Bit
5
4
3:0
Cont-3
0
1
0
1
X
X
X
1
0
1
When using a software flow control the Xon/Xoff characters cannot be used for data transfer.
Symbol
EFR[5]
EFR[4]
EFR[3:0] Cont-3:0 Tx, Rx control. Logic 0 or cleared is the default condition.
Cont-2
0
0
1
1
X
X
X
0
1
1
Enhanced Feature Register bits description
Software flow control functions
Rev. 03 — 10 December 2004
Description
Special Character Detect.
Enhanced function control bit. The content of IER[7:4], ISR[5:4], FCR[5:4],
and MCR[7:5] can be modified and latched. After modifying any bits in the
enhanced registers, EFR[4] can be set to a logic 0 to latch the new values.
This feature prevents existing software from altering or overwriting the
SC16C650B enhanced functions.
Combinations of software flow control can be selected by programming
these bits. See
Cont-1
X
X
X
X
0
1
0
1
1
1
Logic 0 = Special character detect disabled (normal default condition).
Logic 1 = Special character detect enabled. The SC16C650B compares
each incoming receive character with Xoff2 data. If a match exists, the
received data will be transferred to FIFO and ISR[4] will be set to
indicate detection of special character. Bit-0 in the X-registers
corresponds with the LSB bit for the receive character. When this feature
is enabled, the normal software flow control must be disabled (EFR[3:0]
must be set to a logic 0).
Logic 0 = Disable (normal default condition).
Logic 1 = Enable.
Cont-0
X
X
X
X
0
0
1
1
1
1
UART with 32-byte FIFOs and IrDA encoder/decoder
Table
TX, RX software flow controls
No transmit flow control
Transmit Xon1/Xoff1
Transmit Xon2/Xoff2
Transmit Xon1 and Xon2/Xoff1 and Xoff2
No receive flow control
Receiver compares Xon1/Xoff1
Receiver compares Xon2/Xoff2
Transmit Xon1/Xoff1
Receiver compares Xon1 and Xon2, Xoff1 and Xoff2
Transmit Xon2/Xoff2
Receiver compares Xon1 and Xon2/Xoff1 and Xoff2
Transmit Xon1 and Xon2/Xoff1 and Xoff2
Receiver compares Xon1 and Xon2/Xoff1 and Xoff2
23.
[1]
…continued
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
SC16C650B
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