m66291 Renesas Electronics Corporation., m66291 Datasheet - Page 71

• Manufacturer Part Number: m66291
• Description: Assp Usb2.0 Device Controller
• Manufacturer: Renesas Electronics Corporation.

M 6 6 2 9 1 G P / H P
2.35 FIFO Status Register
R e v 1 . 0 1
(1) EPB_STS (Endpoint 0~6 Buffer Status) Bits (b6~b0)
b15
15~7
FIFO Status Register (FIFO_STATUS)
6~0
0
0
-
b
The condition for setting this bit to “1” is the same as that of the Interrupt Status Register 1.
Make sure that the condition for clearing this bit to “0” differs as follows.
The condition for clearing this bit to “0” is always the same as in the case of the RDYM bit set to “0”. Hence,
the presence/absence of data in the buffer can be confirmed by reading these bits even after the interrupt is
cleared by writing “0” to the Interrupt Status Register 1.
2 0 0 4 . 1 1 . 0 1
Reserved. Set it to “0”.
EPB_STS
Endpoint 0~6 Buffer Status
14
0
0
-
13
0
0
-
p a g e 7 1 o f 1 2 2
12
0
0
-
Bit name
11
0
0
-
10
0
0
-
9
0
0
-
0:
1:
Read
8
0
0
-
Disables the reading and writing of data to and from the
buffer
Enables the reading and writing of data to and from the
buffer
7
0
0
-
6
0
0
-
Function
5
0
0
-
4
0
0
-
EPB_STS
3
0
0
-
2
0
0
-
<H/W reset : H’0000>
<S/W reset : H’0000>
<Address : H’58>
<USB bus reset : ->
1
0
0
-
R
0
b0
0
0
-
W
0
×