User's Manual

Laird MSD45N
Hardware Integration Guide, version 0.04
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10
Laird Technologies
Figure 1: SDIO Default Mode Timing
Note: Timing is based on CL 40 pF load on CMD and Data.
Table 4: SDIO Timing Requirements
Symbol
Parameter
Min.
Typ.
Max.
Unit
fPP
Frequency Data Transfer mode
0
-
50
MHz
tWL
Clock low time
7
-
-
ns
tWH
Clock high time
7
-
-
ns
tTLH
Clock rise time
-
-
10
ns
tTHL
Clock low time
-
-
10
ns
Inputs: CMD, DAT (referenced to CLK)
tISU
Input setup time
6
-
-
ns
tIH
Input hold time
2
-
-
ns
Outputs: CMD, DAT (referenced to CLK)
tODLY
Output delay time Data Transfer
mode
0
-
14
ns
PIN DEFINITIONS
Wi-Fi
Bluetooth
Wi-Fi/Bluetooth
Table 5: Pin Definitions
Pin
#
Name
I/O
Default
State
Ref.
Description
If Unused
1
GND
-
Ground
Must be
connected to
GND