參數(shù)資料
型號: M37641F8FP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機(jī)
文件頁數(shù): 52/149頁
文件大?。?/td> 1997K
代理商: M37641F8FP
52
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
[USB Frame Number Registers Low and High ]
USBSOFL, USBFOFH
These 11-bit registers contain the frame number of the SOF token
received from the host computer. These are read-only registers.
[USB Endpoint Index Register] USBINDEX
This register specifies the accessible endpoint. It serves as an in-
dex to endpoint-specific USB Endpoint x IN Control Register, USB
Endpoint x OUT Control Register, USB Endpoint x IN Max. Packet
Size Register, USB Endpoint x OUT Max. Packet Size Register,
USB Endpoint x OUT Write Count Register, and USB FIFO Mode
Selection Register (x = 0 to 4).
USB frame number register Low (address 0056
16
)
USBSOFL
Low-order 8 bits of SOF token
High-order 3 bits of SOF token
Reserved bit (“0” at read)
USB frame number register High (address 0057
16
)
USBSOFH
b
0
b
7
b
0
b
7
U
U
S
S
B
B
I
e
N
n
D
d
p
E
o
X
i
n
t
i
n
d
e
x
r
e
g
i
s
t
e
r
(
a
d
d
r
e
s
s
0
0
5
8
1
6
)
Endpoint index bit (EPINDEX)
b2b1b0
0 0 0: Endpoint 0
0 0 1: Endpoint 1
0 1 0: Endpoint 2
0 1 1: Endpoint 3
1 0 0: Endpoint 4
1 0 1: Not used
1 1 0: Not used
1 1 1: Not used
Reserved bit (
0
at read/write)
AUTO_FLUSH bit (AUTO_FL)
0: Auto FIFO flush disabled
1: Auto FIFO flush enabled
ISO_UPDATE bit (ISO_UPD)
0: ISO_UPDATE disabled
1: ISO_UPDATE enabled
b0
b
7
0 0 0
Fig. 44 Structure of USB frame number registers
Fig. 45 Structure of USB frame number registers
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