参数资料
型号: MC9328MXLDVM15R2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 150 MHz, RISC PROCESSOR, PBGA256
封装: 14 X 14 MM, 1.30 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, MAPBGA-256
文件页数: 62/90页
文件大小: 1242K
代理商: MC9328MXLDVM15R2
Functional Description and Application Information
MC9328MXL Technical Data, Rev. 8
Freescale Semiconductor
65
Figure 49. SDIO ReadWait Timing Diagram
4.8
Memory Stick Host Controller
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.
DAT[1]
For 4-bit
DAT[2]
For 4-bit
CMD
******
P S T
E Z Z
******
CMD52
Z
CRC
E Z Z
S
Block Data
L L L L L L L L L L L L L L L L L L L L L H Z S
E
S
Block Data
E
Block Data
Z Z L H
E
S
Block Data
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
i.MXL
Product
Family
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