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SI3010-F-FS

V.22BIS ISOMODEM® WITH INTEGRATED GLOBAL DAA

Silicon Laboratories 

Si2401

Table 6. Switching Characteristics

(VD = 3.0 to 3.6 V, TA = 0 to 70 °C for F-Grade)

Parameter

Symbol

Min

Typ

Max

Baud Rate Accuracy

–1

—

1

CTS ↓ Active to Start Bit↓

RESET Pulse Width

RESET ↑ to TXD ↓

tcsb

10

—

—

trl

1

—

—

trs

3

—

—

Note: All timing is referenced to the 50% level of the waveform. Input test levels are VIH = 2.0 V, VIL = 0.8 V

Unit

%

ns

ms

ms

Receive Timing

RXD

8-Bit Data

Start

D0

D1

D2

D3

D4

Mode (Default)

RXD

9-Bit Data

Start

D0

D1

D2

D3

D4

Mode

TXD

Transmit Timing

8-Bit Data

Start

D0

D1

D2

D3

D4

Mode (Default)

TXD

9-Bit Data

Start

D0

D1

D2

D3

D4

Mode

D5

D6

D5

D6

D5

D6

D5

D6

D7 Stop

D7

D8 Stop

D7 Stop

D7

D8 Stop

tcsb

tsbc

CTS

RESET

trl

TXD

trs

Note: Baud rates (programmed through register SE0) are as follows: 300,1200, 2400, 9600, 19200,

38400, 115200, and 307200 Hz.

Figure 2. Asynchronous UART Serial Interface Timing Diagram

Rev. 1.0

9

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