AM1707 datasheet(158/198 Pages) TI

158 / 198 page

Start

Bit

Data Bits

UART_TXDn

UART_RXDn

Data Bits

Bit

Start

AM1707

SPRS637A – FEBRUARY 2010 – REVISED APRIL 2010

www.ti.com

6.25.2 UART Electrical Data/Timing

Table 6-92. Timing Requirements for UARTx Receive(1) (see Figure 6-65)

No.

PARAMETER

MIN

MAX

UNIT

tw(URXDB)

Pulse duration, receive data bit (RXDn)

0.96U

1.05U

tw(URXSB)

Pulse duration, receive start bit

0.96U

1.05U

(1)

U = UART baud time = 1/programmed baud rate.

Table 6-93. Switching Characteristics Over Recommended Operating Conditions for UARTx Transmit(1)

(see Figure 6-65)

No.

PARAMETER

MIN

MAX

UNIT

f(baud)

Maximum programmable baud rate

D/E (2) (3)

MBaud(4)

tw(UTXDB)

Pulse duration, transmit data bit (TXDn)

U - 2

U + 2

tw(UTXSB)

Pulse duration, transmit start bit

U - 2

U + 2

(1)

U = UART baud time = 1/programmed baud rate.

(2)

D = UART input clock in MHz. The UART(s) input clock source is PLL0_SYSCLK2.

(3)

E = UART divisor x UART sampling rate. The UART divisor is set through the UART divisor latch registers (DLL and DLH). The UART

sampling rate is set through the over-sampling mode select bit (OSM_SEL) of the UART mode definition register (MDR).

(4)

Baud rate is not indicative of data rate. Actual data rate will be limited by system factors such as EDMA loading, EMIF loading, system

frequency, etc.

Figure 6-65. UART Transmit/Receive Timing

158

Peripheral Information and Electrical Specifications

Submit Documentation Feedback

Product Folder Link(s): AM1707

AM1707 Datasheet(PDF) 158 Page - Texas Instruments

AM1707 Datasheet(HTML) 158 Page - Texas Instruments

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