HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 631
HD6417618
Manufacturer Part Number
HD6417618
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417618.pdf
(646 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
HD6417618RBGN100V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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Item
1. Auto-refreshing
14.3.7 Serial Status Register
(SCFSR)
Main Revisions and Additions in this Edition
Page Revision (See Manual for Details)
175
341
Amended
set so as to satisfy the SDRAM refreshing cycle time
(tRC). A Tpw cycle is inserted between the Tp cycle
and Trr cycle when the setting of bits WTRP1 and
WTRP0 in CSnWCR is longer than or equal to one
cycle.
Amended
Mode
5
Description
Transmit FIFO Data Empty
Indicates that data has been transferred from the transmit FIFO
data register (SCFTDR) to the transmit shift register (SCTSR), the
quantity of data in SCFTDR has become less than the transmission
trigger number specified by the TTRG1 and TTRG0 bits in the FIFO
control register (SCFCR), and writing of transmit data to SCFTDR is
enabled.
0: The quantity of transmit data written to SCFTDR is greater than
[Clearing conditions]
•
•
1: The quantity of transmit data in SCFTDR is equal to or less than
[Setting conditions]
•
•
Note: *
maximum quantity of data that can be written when TDFE is 1 is "16
minus the specified transmission trigger number". If an attempt is
made to write additional data, the data is ignored. The quantity of
data in SCFTDR is indicated by the upper 8 bits of SCFDR.
:
the specified transmission trigger number
the specified transmission trigger number*
TDFE is cleared to 0 when data exceeding the specified
transmission trigger number is written to SCFTDR after 1 is
read from TDFE and then 0 is written
TDFE is cleared to 0 when DMAC write data exceeding the
specified transmission trigger number to SCFTDR
TDFE is set to 1 by a power-on reset
TDFE is set to 1 when the quantity of transmit data in
SCFTDR has become equal to or less than the specified
transmission trigger number as a result of transmission
Since SCFTDR is a 16-byte FIFO register, the
Rev. 6.00 Jun. 12, 2007 Page 599 of 610
REJ09B0131-0600
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