TNETV1644ZDU6 datasheet(236/306 Pages) TI1

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6.11.2 UART Electrical Data/Timing

Start

Bit

DataBits

UTXDx

DataBits

Bit

Start

URXDx

TMS320DM6437

Digital Media Processor

SPRS345D – NOVEMBER 2006 – REVISED JUNE 2008

www.ti.com

Table 6-50. Timing Requirements for UARTx Receive(1) (see Figure 6-28)

-7/-6/-5/-4

-L/-Q6/-Q5/-Q4

NO.

UNIT

MIN

MAX

tw(URXDB)

Pulse duration, receive data bit (URXDx) [15/30/100 pF]

0.96U

1.05U

tw(URXSB)

Pulse duration, receive start bit [15/30/100 pF]

0.96U

1.05U

(1)

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

Table 6-51. Switching Characteristics Over Recommended Operating Conditions for UARTx Transmit(1)

(see Figure 6-28)

-7/-6/-5/-4

-L/-Q6/-Q5/-Q4

NO.

PARAMETER

UNIT

MIN

MAX

f(baud)

Maximum programmable baud rate

128

kHz

tw(UTXDB)

Pulse duration, transmit data bit (UTXDx) [15/30/100 pF]

U - 2

U + 2

tw(UTXSB)

Pulse duration, transmit start bit [15/30/100 pF]

U - 2

U + 2

(1)

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

Figure 6-28. UART Transmit/Receive Timing

236

Peripheral Information and Electrical Specifications

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