SC28L92 Philips Semiconductors, SC28L92 Datasheet - Page 26

• Manufacturer Part Number: SC28L92
• Description: 3.3V-5.0V Dual Universal Asynchronous Receiver/Transmitter DUART
• Manufacturer: Philips Semiconductors

The receiver clock is always a 16X clock except for CSRA[7:4] = 1111.
Philips Semiconductors
CSR CLOCK SELECT REGISTER
Table 5.
NOTE:
CSRA[3:0]—Channel A Transmitter Clock Select
This field selects the baud rate clock for the Channel A transmitter.
The field definition is as shown in Table 5, except as follows:
The transmitter clock is always a 16X clock except for
CSR[3:0] = 1111.
2000 Jan 21
CSRA[7:4]
3.3V–5.0V Dual Universal Asynchronous
Receiver/Transmitter (DUART)
CSRA/B
Addr
0x01
0x09
0000
0001
0010
0100
0101
1000
1001
1010
0011
0110
0111
1011
1100
1101
1110
1111
Baud rate (base on a 3.6864MHz crystal clock)
IP3–16X
1110
ACR[7] = 0
IP4–16X
IP4–1X
MR0[0] = 0 (Normal Mode)
134.5
1,200
1,050
2,400
4,800
7,200
9,600
38.4K
Timer
200
300
600
110
50
CSRA[3:0]
RECEIVER CLOCK SELECT
See Text and table 5
ACR[7] = 1
CSR (7:4)
IP4–16X
IP4–1X
134.5
1,200
2,000
2,400
4,800
1,800
9,600
19.2K
Timer
110
150
300
600
75
IP3–1X
1111
ACR[7] = 0
MR0[0] = 1 (Extended Mode I)
IP4–16X
230.4K
IP4–1X
14.4K
28.8K
57.6K
Timer
134.5
1,050
7,200
1200
1800
3600
7200
300
110
26
CSRB—Channel B Clock Select Register
CSRB[7:4]—Channel B Receiver Clock Select
This field selects the baud rate clock for the Channel B receiver. The
field definition is as shown in Table 5, except as follows:
The receiver clock is always a 16X clock except for
CSRB[7:4] = 1111.
CSRB[3:0]—Channel B Transmitter Clock Select
This field selects the baud rate clock for the Channel B transmitter.
The field definition is as shown in Table 5, except as follows:
The transmitter clock is always a 16X clock except for
CSRB[3:0] = 1111.
ACR[7] = 1
IP4–16X
IP4–1X
115.2K
14.4K
28.8K
57.6K
134.5
7,200
2,000
1,800
Timer
1800
3600
IP5–1X
450
110
900
IP6–1X
1110
1110
TRANSMITTER CLOCK SELECT
See Text and table 5
CSRB[7:4]
CSRB[3:0]
ACR[7] = 0
MR0[2] = 1 (Extended Mode II)
CSR (3:0)
IP4–16X
IP4–1X
115.2K
19.2K
28.8K
57.6K
57.6K
57.6K
38.4K
4,800
1,076
1,050
4,800
9,600
Timer
880
IP5–16X
IP6–16X
Product specification
1111
1111
SC28L92
ACR[7] = 1
IP4–16X
IP4–1X
115.2K
14.4K
28.8K
57.6K
57.6K
14.4K
19.2K
7,200
1,076
2,000
4,800
9,600
Timer
880