MC9328MX1CVM15 Freescale, MC9328MX1CVM15 Datasheet - Page 75

• Manufacturer Part Number: MC9328MX1CVM15
• Manufacturer: Freescale

Specifications of MC9328MX1CVM15

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

4.11
The Memory Stick protocol requires three interface signal line connections for data transfers: MS_BS,
MS_SDIO, and MS_SCLKO. Communication is always initiated by the MSHC and operates the bus in
either four-state or two-state access mode.
The MS_BS signal classifies data on the SDIO into one of four states (BS0, BS1, BS2, or BS3) according
to its attribute and transfer direction. BS0 is the INT transfer state, and during this state no packet
transmissions occur. During the BS1, BS2, and BS3 states, packet communications are executed. The BS1,
BS2, and BS3 states are regarded as one packet length and one communication transfer is always
completed within one packet length (in four-state access mode).
The Memory Stick usually operates in four state access mode and in BS1, BS2, and BS3 bus states. When
an error occurs during packet communication, the mode is shifted to two-state access mode, and the BS0
and BS1 bus states are automatically repeated to avoid a bus collision on the SDIO.
Freescale Semiconductor
DAT[2]
DAT[1]
For 4-bit
For 4-bit
CMD
Memory Stick Host Controller
S
S
Block Data
Block Data
******
E
E Z Z
Z Z L H
L L L L L L L L L L L L L L L L L L L L L H Z S
Figure 54. SDIO ReadWait Timing Diagram
P S T
MC9328MX1 Technical Data, Rev. 7
CMD52
CRC
E Z Z
Z
Functional Description and Application Information
S
Block Data
Block Data
******
E
E
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