adm6999g Infineon Technologies Corporation, adm6999g Datasheet - Page 76
adm6999g
Manufacturer Part Number
adm6999g
Description
8 Port 10/100 Mb/s + Gigabit Single Chip Ethernet Switch Controller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.ADM6999G.pdf
(88 pages)
Available stocks
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Quantity
Price
Company:
Part Number:
adm6999gA2T1
Manufacturer:
Infineon Technologies
Quantity:
10 000
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adm6999gX-A2-T-1
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4.2
ADM6999G/GX serial chip internal counter or EEPROM access timing.
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Figure 9
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ADM6999G/GX issue Reset internal counter command
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Data Sheet
EESK: Similar as MDC signal
EDI: Similar as MDIO
ECS: Must keep low
Preamble: At least 32 continuous "1".
Start: 01(2 bits)
Opcode: 10 (2 bits, Only supports read command)
Table select: 1/Counter, 0/ EEPROM (1 bit)
Register Address: Read Target register address. (7 bits)
TA: Turn Around.
Register Data: 32 bit data.
Counter output bit sequence is bit 31 to bit 0.
If users read EEPROM then 32 bits data will be separated in two EEPROM registers. The sequence is:
– Register +1, Register (Register is even number).
– Register, Register-1(Register is Odd number).
– Example: Read Register 00
Idle: EESK must send at least one clock at idle time.
EESK: Similar as MDC signal
EDI: Similar as MDIO
ECS: Must keep low
Preamble
ADM6999G/GX will drive 03
1
Serial Interface Timing
0
Serial Interface Timing X
Start
1
Opcode
1
(read)
0
1
Address
Device
0
0
H
H
then ADM6999G/GX will drive 01
& 02
0
0
H
Register Address
1
1
1
1
76
1
z
TA
0
H
& 00
H
.Read Register 03
Register Data [31:0]
Rev 1.31, 2005-11-25
Serial Management
ADM6999G/GX
H
then
Idle
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