mk1493-03b Integrated Device Technology, mk1493-03b Datasheet - Page 5

• Manufacturer Part Number: mk1493-03b
• Description: Pci Clock Generator
• Manufacturer: Integrated Device Technology

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SMBus Table 3: Read-Back Register
IDT™ PCI CLOCK GENERATOR
MK1493-03B
PCI CLOCK GENERATOR
Controller (host) will send a start bit
Controller (host) sends the write address D2
IDT clock will acknowledge
Controller (host) sends the beginning Byte location = N
IDT clock will acknowledge
Controller (host) will send a repeat start bit
Controller (host) sends the read address Byte D3
IDT clock will acknowledge
IDT clock will send the data Byte count = X
IDT clock sends Byte N
IDT clock sends Byte N+X-1
Controller (host) will need to acknowledge each Byte
Controller (host) will send a not acknowledge bit
Controller (host) will send a stop bit
Byte 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin #
-
-
-
-
-
-
-
-
FS vs. SMBus
Name
prog
HW/SW select
RESERVED
RESERVED
Frequency
Function
Selection
Control
(H)
(H)
Type
RW
5
Slave Address
Slave Address
See Frequency table 4
Beginning Loc = N
Controller (Host)
D2
D2
HW
RT
N
0
T
P
(H)
(H)
ACK
ACK
O
O
O
Index Block Read Operation
starT bit
SW
stoP bit
repeat
1
starT
NAK
WR
RD
=0
=1
MK1493-03B
UP State
X
B
Y
T
E
S
Power
0
0
0
0
0
0
0
0
CLOCK SYNTHESIZER
IDT (Slave/Receiver)
Data Byte Count=X
Beginning Byte N
Byte N + X - 1
ACK
ACK
ACK
O
O
O
REV H 051310