參數(shù)資料
型號(hào): DS21FF42
廠商: DALLAS SEMICONDUCTOR
元件分類: Digital Transmission Controller
英文描述: DATACOM, FRAMER, PBGA300
封裝: 27 X 27 MM, BGA-300
文件頁數(shù): 83/115頁
文件大小: 534K
代理商: DS21FF42
DS21FF42/DS21FT42
7 of 115
2. MCM LEAD DESCRIPTION
LEAD DESCRIPTION SORTED BY SYMBOL Table 2-1
Lead
Symbol
I/O
Description
B7
8MCLK
O
8.192 MHz Clock Based on CLKSI.
G20
A0
I
Address Bus Bit 0 (lsb).
H20
A1
I
Address Bus Bit 1.
G19
A2
I
Address Bus Bit 2.
H19
A3
I
Address Bus Bit 3.
G18
A4
I
Address Bus Bit 4.
H18
A5
I
Address Bus Bit 5.
G17
A6
I
Address Bus Bit 6.
H17
A7
I
Address Bus Bit 7 (msb).
W15
BTS
I
Bus Timing Select. 0 = Intel / 1 = Motorola.
B6
CLKSI
I
Reference clock for the 8.192 MHz clock synthesizer.
T8
CS1*
I
Chip Select for Quad Framer 1.
Y4
CS2*
I
Chip Select for Quad Framer 2.
Y15
CS3*
I
Chip Select for Quad Framer 3.
E19
CS4*/NC
I
Chip Select for Quad Framer 4. NC on Four x Three.
L20
D0
I/O
Data Bus Bit 0 (lsb).
M20
D1
I/O
Data Bus Bit 1.
L19
D2
I/O
Data Bus Bit 2.
M19
D3
I/O
Data Bus Bit 3.
L18
D4
I/O
Data Bus Bit 4.
M18
D5
I/O
Data Bus Bit 5.
L17
D6
I/O
Data Bus Bit 6.
M17
D7
I/O
Data Bus Bit 7 (msb).
C7
DVDD1
Digital Positive Supply for Framer 1.
E4
DVDD1
Digital Positive Supply for Framer 1.
D2
DVDD1
Digital Positive Supply for Framer 1.
K3
DVDD2
Digital Positive Supply for Framer 2.
U7
DVDD2
Digital Positive Supply for Framer 2.
P2
DVDD2
Digital Positive Supply for Framer 2.
V19
DVDD3
Digital Positive Supply for Framer 3.
T12
DVDD3
Digital Positive Supply for Framer 3.
L16
DVDD3
Digital Positive Supply for Framer 3.
D17
DVDD4/NC
Digital Positive Supply for Framer 4. NC on Four x Three.
F16
DVDD4/NC
Digital Positive Supply for Framer 4. NC on Four x Three.
B11
DVDD4/NC
Digital Positive Supply for Framer 4. NC on Four x Three.
E9
DVSS1
Digital Signal Ground for Framer 1.
A6
DVSS1
Digital Signal Ground for Framer 1.
D5
DVSS1
Digital Signal Ground for Framer 1.
U3
DVSS2
Digital Signal Ground for Framer 2.
K4
DVSS2
Digital Signal Ground for Framer 2.
U8
DVSS2
Digital Signal Ground for Framer 2.
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