AS3524 datasheet(86/124 Pages) AMSCO

86 / 124 page

AS3524 C21 / C22

austriamicrosystems

Data Sheet, Confidential

www.austriamicrosystems.com

Revision 1.11

- 124

Table 64 UART Clock divider lower byte register

Name

Base

Default

UART_DLO_REG

AS3525_UART_BASE

0xC8110000

Clock divider lower byte register

Offset: 0x00

DLS set to 1

This register holds the clock divider value (decimal) which is used to derive the baud

clock. To achieve a desired baud rate, the baud clock should be 16-times higher then

the baud rate. To derive this clock the ratio of the system clock and the required baud

clock should be calculated and the value should be programmed into the clock divider

lower byte and higher byte registers (UART_DLO_REG and UART_DHI_REG).

Clock divider value = (input frequency) / (baud rate x 16)

Bit

Bit Name

Default

Access

Bit Description

7:0

UART_DLO_REG

00000000

This register holds the lower byte of the decimal divisor value

to calculate baud clock.

Table 65 UART Clock divider higher byte register

Name

Base

Default

UART_DHI_REG

AS3525_UART_BASE

0xC8110000

Clock divider higher byte register

Offset: 0x04

DLS set to 1

This register holds the higher byte of the decimal divisor value to calculate baud clock.

Bit

Bit Name

Default

Access

Bit Description

7:0

UART_DHI_REG

00000000

This register holds the higher byte of the decimal divisor value

to calculate baud clock.

Table 66 UART Interrupt enable register

Name

Base

Default

UART_INTEN_REG

AS3525_UART_BASE

0xC8110000

Interrupt enable register

Offset: 0x04

DLS set to 0

This register will enable the three types of interrupts. Setting the bits of this register to

logic 1 enables the selected interrupt.

Bit

Bit Name

Default

Access

Bit Description

7:3

Reserved

00000

These bits are reserved for future use.

lnStatusEn

This bit enables the “rxLineStatus” interrupt.

txDataEmptyEn

This bit enables the “txDataEmpty” interrupt.

rxDataRdyEn

This bit enables the “rxDataRdy” interrupt.

AS3524 Datasheet(PDF) 86 Page - ams AG

AS3524 Datasheet(HTML) 86 Page - ams AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL