NEC mPD98409, Вопросы и ответы

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Information S14769EJ1V0IF00
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Q.8.9 Pools 0 to 7 are allocated as the receive pools for Raw cells. Can all the pools from 0 to 7
be used for receiving Raw cells, or can only one of the pools from 0 to 7 be used?
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Q.8.10 What is the Alert level of a receive pool descriptor? Are the settings and interrupts of the Alert level
valid for a Raw cell pool?
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Q.8.11 What kind of support is there for receive VPI/VCI? When reducing from VPI/VCI 24 bits to
VPI/VCI 15 bits via a setting in the VRR register, how is the area that is invalidated by SHIFT and
MASK processed?
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Q.8.12 How should the UINFO field of the receive VC table and receive indication be used?
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Q.8.13 What is the Packet size field in the receive indication?
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CHAPTER 9 TRANSMISSION/RECEPTION........................................................................................... 33
Q.9.1 Can the contents of the transmit/receive VC table be changed during transmission or reception?
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Q.9.2 How many bits can be supported for VPI/VCI?
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Q.9.3 To what part is the CRC-32 operation applied?
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Q.9.4 Is the receive indication issued even when a Raw cell is received?
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CHAPTER 10 COMMANDS..................................................................................................................... 35
Q.10.1 What will happen if the Tx_Ready command is issued to a VC that is transmitting a packet
(active VC)?
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Q.10.2 What will happen if the Close_Channel command is issued with an incorrect setting
for the transmit or receive VC specified by the R/T bit of the command?
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Q.10.3 When accessing the control memory by using the Indirect_Access command, can two or more
addresses be accessed by issuing the command only once?
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Q.10.4 How is the NOP command used?
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CHAPTER 11 LOOPBACK...................................................................................................................... 37
Q.11.1 Is valid data output to the PHY side (UTOPIA interface) in loopback mode?
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Q.11.2 Does the pin status of the UTOPIA interface affect the transmit/receive operations
of the
µ
PD98409 in loopback mode?
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CHAPTER 12 REGISTERS...................................................................................................................... 38
Q.12.1 What is the function of the ADDR register?
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Q.12.2 How are the ECCR and ERDR registers initialized?
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Q.12.3 Can transmission/reception be temporarily halted by clearing the SE and
RE bits of the GMR register during transmission/reception?
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Q.12.4 What is the value of the VER register?
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CHAPTER 13 JTAG................................................................................................................................. 39
Q.13.1 How can the JTAG function be reset when JTAG is not used?
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