MC68MH360ZP33L Freescale Semiconductor, MC68MH360ZP33L Datasheet - Page 362

• Manufacturer Part Number: MC68MH360ZP33L
• Description: IC MPU 32BIT QUICC 357-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360ZP33L

• Processor Type: M683xx 32-Bit
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 357-PBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

IDMA Channels
DE—Destination Access Bus Error
DA—Done Asserted During Transfer
Data Length
Source Buffer Pointer
Destination Buffer Pointer
7.6.4.2.3 IDMA Commands (INIT_IDMA). This command causes the RISC controller to
reinitialize its IDMA internal state to the condition it had after a system reset. The IDMA BD
pointer is reinitialized to the top of BD ring. When in the auto buffer and buffer chaining
modes, the IDMA can be reset by setting the RST bit in the CMR and issuing the INIT_IDMA
command. The INIT_IDMA command should only be executed in conjunction with the set-
ting of the RST bit in the CMR.
7.6.4.3 STARTING THE IDMA. Once the channel has been initialized with all parameters
required for a transfer operation, it is started by setting the STR bit in the CMR. After the
channel has been started, any register that describes the current operation may be read but
not modified (SAPR, DAPR, FCR, or BCR).
Once STR has been set, the channel is active and either accepts operand transfer requests
in external mode or generates requests automatically in internal mode. When the first valid
external request is recognized, the IDMA arbitrates for the bus. The DREQx input is ignored
until STR is set.
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The buffer was closed due to a bus error on the destination access. An interrupt (BED)
will be generated, regardless of the I-bit. The RISC will clear the V-bit of this BD.
The buffer was closed due to the assertion of DONEx. An interrupt (DONE) will be gener-
ated, regardless of the I-bit. The RISC will clear the V-bit of this BD.
The data length is the number of bytes that the IDMA should transfer from/to this BD’s
data buffer. The data length should be programmed to a value greater than zero.
The source buffer pointer contains the address of the associated source data buffer. The
buffer may reside in either internal or external memory.
The destination buffer pointer contains the address of the associated destination data
buffer. The buffer may reside in either internal or external memory.
In single address mode when the source is a device, this field is
ignored. In dual address mode when the source is a device, this
field should contain the device address.
In single address mode when the destination is a device, this
field is ignored. In dual address mode when the destination is a
device, this field should contain the device address.
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
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