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■ RSIZE1
The RSIZE1 register indicates the size of the latest data transferred at end point 1 (BULK OUT
end point). The address of the RSIZE0 register is 0006_0044
Figure 17.2-4 shows the RSIZE1 register.
Address:0006-0044
H
Table 17.2-7 lists the bits of the RSIZE1 register and their functions.
Table 17.2-7 Bits of the RSIZE1 Register
Bit name
RSIZE1[6:0]
The RSIZE1 register has two sides corresponding to the double-buffer configuration. The sides
of the RSIZE1 register are switched at the same time as buffer switching. The side of the
RSIZE1 register currently available for reading and writing by an application program corresponds
to the side of the FIFO register currently available for reading and writing.
The RSIZE1 bits are updated when the USB function macro program transmits an ACK signal.
Figure 17.2-14 RSIZE1 Register
15
14
13
12
11
10
Polarity
These bits indicate the size of the latest data
-
transferred at end point 1 (BULK OUT end point).
9
8
7
6
5
4
R
R
R
S
S
S
I
I
I
Z
Z
Z
E
E
E
16
15
14
R
R
R
Function
CHAPTER 17 USB FUNCTION
.
H
3
2
1
0
Initial value
R
R
R
R
S
S
S
S
I
I
I
I
XXXXXXXXX0000000
Z
Z
Z
Z
E
E
E
E
13
12
11
10
R
R
R
R
B
393
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