參數(shù)資料
型號(hào)： UPD98401AGD-MML
廠商： NEC Corp.
元件分類： 圓形連接器
英文描述： Circular Connector; No. of Contacts:100; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-2 RoHS Compliant: No
中文描述： 自動(dòng)柜員機(jī)特區(qū)芯片
文件頁(yè)數(shù)： 16/36頁(yè)
文件大?。?/td> 216K
代理商： UPD98401AGD-MML
Data Sheet S12100EJ3V0DS00
16
μ
PD98401A
2.
DIFFERENCES FROM
μ
PD98401
2.1 Additional Functions
The
μ
PD98401A is compatible with the
μ
PD98401 in terms of hardware and software.
However, the
μ
PD98401A has the following additional functions as compared with the
μ
PD98401. All the
additional functions are enabled by the setting of the GMR register.
(1) DMA 12-word burst cycle
(2) Byte alignment transfer function of receive data buffer
(3) Bus monitor pin
(4) Mode to insert idle cell for transmission rate adjustment
(5) New scheduling function
(6) Receive packet size indication (cell units/Length mode added)
(7) Cell-level support of UTOPIA interface
(8) AAL-3/4 traffic assist function
(9) JTAG boundary scan support
Aggregate mode
2.2 Differences from
μ
PD98401 (NEASCOT-S10
TM
)
(1) Increased receive FIFO size
μ
PD98401
μ
PD98401A : 23 cells
: 10 cells
(2) Cell processing of PTI field (1
XX
)
μ
PD98401
: Receives cells other than those of OAM F5 pattern (101, 100) as user data cells.
μ
PD98401A : Processes as raw cell of 1
XX
pattern. Stores in pool 0.
(3) Changing transmission mode of unassigned cell
The
μ
PD98401 starts transmitting unassigned cells immediately after power application and continues
transmitting the unassigned cells while there is no active transmission VC. It also has a function to stop
transmitting unassigned cells while there is not an active VC, by using the UCE bit of the GMR register.
The
μ
PD98401A deletes this UCE bit function, makes the TENBL_B signal inactive on power application and
when there is no active VC, and does not transmit unassigned cells. The
μ
PD98401A transmits unassigned cells
only when there is an active VC and when the unassigned cell generator function is enabled.
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