參數(shù)資料
型號(hào)： ML60851D
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： USB Device Controller
中文描述： USB設(shè)備控制器
文件頁(yè)數(shù)： 18/82頁(yè)
文件大?。?/td> 705K
代理商： ML60851D
PEDL60851D-01
1
Semiconductor
ML60851D
18/82
EP1 Transmit Packet Ready Bit (D5)
This bit can be read by the local MCU. Further, this bit can be set to “1” by writing “1” to the D5 bit.
The conditions of asserting and deasserting this bit are the following. EP1 has a two-layer FIFO, and even the
packet ready bits are present independently for layer A and layer B. The switching between these two layers is
performed automatically by the ML60851D.
Bit name
Asserting condition
When the local MCU has set the bits
of both layer A and layer B.
Action when asserted
Data transmission is possible from
EP1 when the bit for at least one of
layer A and layer B has been
asserted.
EP1 Transmit packet ready (D5)
Bit name
Deasserting condition
When an ACK is received from the
host computer for the data
transmission from either layer A or
layer B.
Action when deasserted
EP1 is locked when both layer A and
layer B have not prepared the
transmit data.
EP1 Transmit packet ready (D5)
See the explanation of the operation of the two-layer FIFO given in the Section on ‘Functional Description’.
EP2 Transmit Packet Ready Bit (D6)
This bit can be read by the local MCU. Further, this bit can be set to “1” by writing “1” to the D6 bit.
The conditions of asserting and negating this bit are the following.
Bit name
Asserting condition
When the local MCU has set this bit.
Action when asserted
Data transmission is possible from
EP2.
EP2 Transmit packet ready (D6)
Bit name
Deasserting condition
When an ACK is received from the
host computer in response to the
data transmission from EP2.
Action when deasserted
EP2 is locked.
EP2 Transmit packet ready (D6)
EP3 Transmit Packet Ready Bit (D7)
This bit can be read by the local MCU. Further, this bit can be set to “1” by writing “1” to the D7 bit.
The conditions of asserting and deasserting this bit are the following.
Bit name
Asserting condition
When the local MCU has set this bit.
Action when asserted
Data transmission is possible from
EP3.
EP3 Transmit packet ready (D7)
Bit name
Deasserting condition
When an ACK is received from the
host computer in response to the
data transmission from EP3.
Action when deasserted
EP3 is locked.
EP2 Transmit packet ready (D7)
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