參數(shù)資料
型號: DS33ZH11
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: Ethernet Mapper
中文描述: DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PBGA100
封裝: 10 X 10 MM, 1.41 MM HEIGHT, 0.80 MM PITCH, CSBGA-100
文件頁數(shù): 25/169頁
文件大?。?/td> 1049K
代理商: DS33ZH11
DS33Z11 Ethernet Mapper
25 of 169
NAME
PIN #
DS33Z11
CSBGA (169)
PIN #
DS33ZH11
BGA(100)
TYPE
FUNCTION
SBA[0]
M6
F7
SBA[1]
N7
J4
I
SDRAM Bank Select:
These two bits select 1 of 4 banks
for the read/write/precharge operations.
Note: All SDRAM operations are controlled entirely by the
DS33Z11. No user programming for SDRAM buffering is
required.
Active-Low SDRAM Row Address Strobe:
Used to latch
the row address on rising edge of SDCLKO. It is used with
commands for Bank Activate, Precharge, and Mode
Register Write.
Active-Low SDRAM Column Address Strobe:
Used to
latch the column address on the rising edge of SDCLKO. It
is used with commands for Bank Activate, Precharge, and
Mode Register Write.
Active-Low SDRAM Write Enable:
This output enables
write operation and auto precharge.
SRAS
K6
K3
O
SCAS
H4
F4
O
SWE
M4
G3
O
SDMASK[0]
N6
F3
SDMASK[1]
G4
E3
SDMASK[2]
M10
J6
SDMASK[3]
M9
C5
O
SDRAM Mask 0 through 3:
When high, a write is done for
that byte. The least significant byte is SDATA7 to SDATA0.
The most significant byte is SDATA31 to SDATA24.
SDCLKO
N5
J3
O
(4mA)
SDRAM CLK Out:
System clock output to the SDRAM.
This clock is a buffered version of SYSCLKI.
System Clock In:
100MHz System Clock input to the
DS33Z11, used for internal operation. This clock is
buffered and provided at SDCLKO for the SDRAM
interface. The DS33Z11 also provides a divided version
output at the REF_CLKO pin. A clock supply with ±100
ppm frequency accuracy is suggested.
Active-Low SDRAM Chip Select:
This output enables
SDRAM access.
QUEUE STATUS
SYSCLKI
G13
K10
I
SDCS
L6
H3
O
QOVF
C7
O
Queue Overflow:
This pin goes high when the transmit or
receive queue has overflowed. This pin goes low when the
high watermark is reached again. This pin functions in
both software and hardware mode.
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