參數(shù)資料
型號(hào): LAN9116-MT
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 微控制器/微處理器
英文描述: Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller
中文描述: 1 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100
封裝: ROHS COMPLIANT, TQFP-100
文件頁(yè)數(shù): 116/126頁(yè)
文件大小: 831K
代理商: LAN9116-MT
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Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
Revision 1.1 (05-17-05)
116
SMSC LAN9116
DATASHEET
is identical to a PIO Burst Read, and the FIFO_SEL signal has the same timing characteristics as the
address lines.
In this mode, performance is improved by allowing an unlimited number of back-to-back DWORD or
WORD read cycles. RX Data FIFO Direct PIO Burst Reads can be performed using Chip Select (nCS)
or Read Enable (nRD). When either or both of these control signals go high, they must remain high
for the period specified.
Timing for 16-bit and 32-bit RX Data FIFO Direct PIO Burst Reads is identical with the exception that
D[31:16] are not driven during a 16-bit burst. Note that address lines A[2:1] are still used, and address
bits A[7:3] are ignored.
Note:
The “Data Bus” width is 32 bits with optional support for 16-bit bus widths
Note:
An RX Data FIFO Direct PIO Burst Read cycle begins when both nCS and nRD are asserted.
The cycle ends when either or both nCS and nRD are deasserted. They may be asserted and
deasserted in any order.
Figure 6.4 RX Data FIFO Direct PIO Burst Read Cycle Timing
Table 6.6 RX Data FIFO Direct PIO Burst Read Cycle Timing
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNITS
t
csh
nCS, nRD Deassertion Time
13
ns
t
csdv
nCS, nRD Valid to Data Valid
30
ns
t
acyc
Address Cycle Time
165
t
asu
Address, FIFO_SEL Setup to nCS, nRD Valid
0
ns
t
adv
Address Stable to Data Valid
40
t
ah
Address, FIFO_SEL Hold Time
0
ns
t
don
Data Buffer Turn On Time
0
ns
t
doff
Data Buffer Turn Off Time
7
ns
t
doh
Data Output Hold Time
0
ns
Data Bus
nCS, nRD
FIFO_SEL
A[2:1]
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