Electronic Components Datasheet Search |
|
SCC2681 Datasheet(PDF) 21 Page - NXP Semiconductors |
|
|
SCC2681 Datasheet(HTML) 21 Page - NXP Semiconductors |
21 / 29 page Philips Semiconductors Product data SCC2681 Dual asynchronous receiver/transmitter (DUART) 2004 Apr 06 21 Table 5. Baud Rates Extended Normal BRG BRG Extended Rates CSR[7:4] ACR[7] = 0 ACR[7] = 1 ACR[7] = 0 ACR[7] = 1 0000 50 75 4,800 7,200 0001 110 110 880 880 0010 134.5 134.5 1,076 1,076 0011 200 150 19.2 k 14.4 k 0100 300 300 28.8 k 28.8 k 0101 600 600 57.6 k 57.6 k 0110 1,200 1,200 115.2 k 115.2 k 0111 1,050 2,000 1,050 2,000 1000 2,400 2,400 57.6 k 57.6 k 1001 4,800 4,800 4,800 4,800 1010 7,200 1,800 57.6 k 14.4 k 1011 9,600 9,600 9,600 9,600 1100 38.4 k 19.2 k 38.4 k 19.2 k 1101 Timer Timer Timer Timer 1110 I/O2 – 16 × I/O2 – 16 × I/O2 – 16 × I/O2 – 16 × 1111 I/O2 – 1 × I/O2 – 1 × I/O2 – 1 × I/O2 – 1 × NOTE: Each read on address H‘2’ will toggle the baud rate test mode. When in the BRG test mode, the baud rates change as shown to the left. This change affects all receivers and transmitters on the DUART. See “Extended baud rates for SCN2681, SCN68681, SCC2691, SCC2692, SCC68692 and SCC2698B” in application notes elsewhere in this publication. The test mode at address H‘A’ changes all transmitters and receivers to the 1 × mode and connects the output ports to some internal nodes. Receiver Reset in the Normal Mode (Receiver Enabled) Reset can be accomplished easily by issuing a receiver software or hardware reset followed by a receiver enable. All receiver data, status and programming will be preserved and available before reset. The reset will NOT affect the programming. Receiver Reset in the Wake-Up Mode (MR1[4:3] = 11) Reset can also be accomplished easily by first exiting the wake-up mode (MR1[4:3] = 00 or 01 or 10), then issuing a receiver software or hardware reset followed by a wake-up re-entry (MR1[4:3] = 11). All receiver data, status and programming will be preserved and available before reset. The reset will NOT affect other programming. The reason for this is the receiver is partially enabled when the parity bits are at ‘11’. Thus the receiver disable and reset is bypassed by the partial enabling of the receiver. SD00097 |
Similar Part No. - SCC2681 |
|
Similar Description - SCC2681 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |