SC16C850SVIBS-S NXP Semiconductors, SC16C850SVIBS-S Datasheet - Page 16

• Manufacturer Part Number: SC16C850SVIBS-S
• Manufacturer: NXP Semiconductors

Specifications of SC16C850SVIBS-S

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Philips Semiconductors
9397 750 11618
Product data
6.6.1 Single DMA transfers (DMA mode 0/FIFO disable)
6.6 DMA operation
There are two modes of DMA operation, DMA mode 0 or DMA mode 1, selected by
FCR[3].
In DMA mode 0 or FIFO disable (FCR[0] = 0) DMA occurs in single character
transfers. In DMA mode 1, multi-character (or block) DMA transfers are managed to
relieve the processor for longer periods of time.
Figure 10
Transmitter:
after one character has been loaded into it.
Receiver:
becomes inactive when the receiver is empty.
Fig 10. TXRDY and RXRDY in DMA mode 0/FIFO disable.
wrptr
wrptr
shows TXRDY and RXRDY in DMA mode 0/FIFO disable.
RXRDY is active when there is at least one character in the FIFO. It
When empty, the TXRDY signal becomes active. TXRDY will go inactive
FIFO EMPTY
TX
Rev. 04 — 19 June 2003
AT LEAST ONE
LOCATION FILLED
TXRDY
TXRDY
rdptr
rdptr
Quad UART with 64-byte FIFO
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
FIFO EMPTY
RX
SC16C754
AT LEAST ONE
LOCATION FILLED
RXRDY
RXRDY
002aaa232
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