HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 440
HD6417660
Manufacturer Part Number
HD6417660
Description
Renesas 32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417660.pdf
(846 pages)
- Current page: 440 of 846
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Rev. 1.00, 02/04, page 402 of 804
Bit
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Name
TFUA4
TFUA3
TFUA2
TFUA1
TFUA0
RFWM2
RFWM1
RFWM0
RFUA4
RFUA3
RFUA2
RFUA1
RFUA0
Initial
Value
1
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R
R
R
R
R
R/W
R/W
R/W
R
R
R
R
R
Description
Transmit FIFO Usable Area
Indicate the number of words that can be transferred by
the CPU or DMAC as B'00000 (full) to B'10000 (empty).
Receive FIFO Watermark
000: Issue a transfer request when 1 stage or more of the
001: Setting prohibited
010: Setting prohibited
011: Setting prohibited
100: Issue a transfer request when 4 or more stages of
101: Issue a transfer request when 8 or more stages of
110: Issue a transfer request when 12 or more stages of
111: Issue a transfer request when 16 stages of the
•
•
Receive FIFO Usable Area
Indicate the number of words that can be transferred by
the CPU or DMAC as B'00000 (empty) to B'10000 (full).
A transfer request to the receive FIFO is issued by the
RDREQE bit in SISTR.
The receive FIFO is always used as 16 stages of the
FIFO regardless of these bit settings.
receive FIFO are valid.
the receive FIFO are valid.
the receive FIFO are valid.
the receive FIFO are valid.
receive FIFO are valid.
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