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SI4720-B20

BROADCAST FM RADIO TRANSCEIVER FOR PORTABLE APPLICATIONS

Silicon Laboratories 

Si4720/21-B20

Table 11. Digital Audio Interface Characteristics (Transmit)

(VDD = 2.7 to 5.5 V, VIO = 1.5 to 3.6 V, TA = –20 to 85 °C)

Parameter

Symbol Test Condition Min

Typ

Max

Unit

DCLK pulse width high

DCLK pulse width low

DFS set-up time to DCLK rising edge

DFS hold time from DCLK rising edge

DIN set-up time from DCLK rising edge

DIN hold time from DCLK rising edge

DCLK, DFS, DIN, Rise/Fall time

DCLK Tx Frequency1,2

tDCH

tDCL

tSU:DFS

tHD:DFS

tSU:DIN

tHD:DIN

tR

tF

10

—

—

ns

10

—

—

ns

5

—

—

ns

5

—

—

ns

5

—

—

ns

5

—

—

ns

—

—

10

ns

1.0

—

40.0

MHz

Notes:

1. Guaranteed by characterization.

2. The DCLK frequency may be set below the minimum specification if DIGITAL_INPUT_SAMPLE_RATE is first set to 0

(disable).

DCLK

tR

tF

DFS

tHD:DFS

tSU:DFS

DIN

tSU:DIN

tHD:DIN

Figure 9. Digital Audio Interface Timing Parameters, I2S Mode

Rev. 1.0

17

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