6.6.5 Memory Stick
GL827 USB 2.0 Single Slot Card Reader Controller
Figure 6.4 - MemoryStick Parallel Transfer Operation Timing
Memory Stick Frequency Mode
Parameter
Description
FSCLK
SCLK frequency
Mode
Typ
Unit
0
1.5M
1
6M
Hz
2
15M
3
20M
Remark
AC Characteristics of Memory Stick Interface (CLOAD = 30 pF)
PARAMETER
DESCRIPTION
FSCLK =
1.5 MHZ
FSCLK =
6 MHZ
tSCLKc
tSCLKwh
tSCLKwl
SCLK Cycle
SCLK H pulse length
(min)
SCLK L pulse length (min)
666.6
323.3
323.3
166.6
73.3
73.3
tSCLKr
SCLK rise time (min)
5
5
tSCLKr
SCLK rise time (max)
10
10
tSCLKf
SCLK Fall time (min)
5
5
tSCLKf
SCLK Fall time (max)
10
10
tBSsu
BS setup time (min)
5
5
tBSh
BS hold time (min)
5
5
FSCLK =
15 MHZ
66.6
23.3
FSCLK =
20 MHZ
50.0
15
UNIT
ns
ns
23.3
15
ns
5
5
ns
10
10
ns
5
5
ns
10
10
ns
5
5
ns
5
5
ns
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