Datasheet

RDA Microelectronics, Inc. RDA5807M FM Tuner V1.1
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in
part without prior written permission of RDA.
Page 7 of 22
5 Serial Interface
5.1 I
2
Table 5-1 I
C Interface Timing
2
(VDD = 3 V, T
C Interface Timing Characteristics
A
= 25 °C, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITION MIN TYP MAX UNIT
SCLK Frequency
f
scl
0 - 400 KHz
SCLK High Time
t
high
0.6 - -
µs
SCLK Low Time
t
low
1.3 - -
µs
Setup Time for START Condition
t
su:sta
0.6 - -
µs
Hold Time for START Condition
t
hd:sta
0.6 - -
µs
Setup Time for STOP Condition
t
su:sto
0.6 - -
µs
SDIO Input to SCLK↑ Setup t
su:dat
100 - - ns
SDIO Input to SCLK↓ Hold t
hd:dat
0 - 900 ns
STOP to START Time
t
buf
1.3 - -
µs
SDIO Output Fall Time
t
f:out
20+0.1C -
b
250 ns
SDIO Input, SCLK Rise/Fall Time
t
r:in /
t
f:in
20+0.1C -
b
300 ns
Input Spike Suppression
t
sp
- - 50 ns
SCLK, SDIO Capacitive Loading
C
b
- - 50 pF
Digital Input Pin Capacitance 5 pF
SCLK
SDIO
1-7 8 9
1-7 8
9
1-7 8 9
START
ACK
data high byteACKr/waddress
data low byte ACK STOP
tsu:sta
thd:sta
tsp
START
tsu:sto
tbuf
t
su:dat
t
hd:dat
Figure 5-1. I
2
C Interface Write Timing Diagram
SCLK
SDIO
1-7 8 9
1-7 8
9
1-7 8 9
START
ACK
data high byteACKr/waddress
data low byte NACK STOP
tsp
START
t
buf
t
su:sta thd:sta
tsu:dat
thd:dat tsu:sto
Figure 5-2. I
2
C Interface Read Timing Diagram