MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 463
MCBSTM32EXL
Manufacturer Part Number
MCBSTM32EXL
Description
BOARD EVALUATION FOR STM32F103ZE
Manufacturer
Keil
Specifications of MCBSTM32EXL
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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RM0008
Note:
Note:
Figure 186. Command path state machine (CPSM)
When the Wait state is entered, the command timer starts running. If the timeout is reached
before the CPSM moves to the Receive state, the timeout flag is set and the Idle state is
entered.
The command timeout has a fixed value of 64 SDIO_CK clock periods.
If the interrupt bit is set in the command register, the timer is disabled and the CPSM waits
for an interrupt request from one of the cards. If a pending bit is set in the command register,
the CPSM enters the Pend state, and waits for a CmdPend signal from the data path
subunit. When CmdPend is detected, the CPSM moves to the Send state. This enables the
data counter to trigger the stop command transmission.
The CPSM remains in the Idle state for at least eight SDIO_CK periods to meet the
N
the minimum delay between the host command and the card response.
RC
timing constraints.
Last Data
Pend
CPSM Enabled and
pending command
Send
Enabled and
command start
CPSM
disabled
N
Wait for response
CC
Response Received in CE-ATA mode and
no interrupt and wait for CE-ATA
Command Completion signal disabled
On reset
CPSM disabled or
no response
is the minimum delay between two host commands, and
Doc ID 13902 Rev 9
Idle
CPSM Disabled or
command timeout
Secure digital input/output interface (SDIO)
CE-ATA Command
Completion signal
received or
CPSM disabled or
Command CRC failed
Wait
Response received or
disabled or command
CRC failed
Response
started
Wait_CPL
Receive
Response Received in CE-ATA
mode and no interrupt and
wait for CE-ATA Command
Completion signal enabled
ai14806b
N
CC
463/995
N
RC
and
is
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