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Functional Description
23
SLES140A—March 2007 TVP5147M1PFP
Single Byte
B8S ACK E8 ACK VA0 ACK VA1 ACK VA2 ACK P
VBUS Write
B8S ACK E0 ACK Send Data ACK P
Multiple Bytes
B8
S ACK E8 ACK VA0 ACK VA1 ACK VA2 ACK P
B8S ACK E1 ACK Send Data ACK ACK PSend Data•••
Single Byte
B8
S ACK E8 ACK VA0 ACK VA1 ACK VA2 ACK P
VBUS Read
B8S ACK E0 ACK ACK
Multiple Bytes
B8
S ACK E8 ACK VA0 ACK VA1 ACK VA2 ACK P
B8S ACK E1 ACK ACK NAK PRead Data•••
Read Data NAK PSB9
SB9ACK Read Data
HOST
Processor
I
2
C
VBUS
Data
I
2
C Registers
00h
E0h
E1h
VBUS
Address
E8h
EAh
FFh
VBUS[23:0]
Line
Mode
VBUS Registers
00 0000h
FIFO
VPS
VITC
WSS
CC
80 051Ch
80 0520h
80 052Ch
80 0600h
80 0700h
90 1904h
FF FFFFh
NOTE: Examples use default I
2
C address
ACK = Acknowledge generated by the slave
NAK = No acknowledge generated by the master
Figure 2−17. VBUS Access