S3C2416X RISC MICROPROCESSOR
IIC-BUS INTERFACE
17-5
SDA
Acknowledgement
Signal from Receiver
SCL
S
1
2
7
8
9
1
2
9
Acknowledgement
Signal from Receiver
MSB
ACK
Byte Complete, Interrupt
within Receiver
Clock Line Held Low by
receiver and/or transmitter
Figure 17-4. Data Transfer on the IIC-Bus
1.4 ACK SIGNAL TRANSMISSION
To complete a one-byte transfer operation, the receiver should send an ACK bit to the transmitter. The ACK pulse
should occur at the ninth clock of the SCL line. Eight clocks are required for the one-byte data transfer. The
master should generate the clock pulse required to transmit the ACK bit.
The transmitter should release the SDA line by making the SDA line High when the ACK clock pulse is received.
The receiver should also drive the SDA line Low during the ACK clock pulse so that the SDA keeps Low during
the High period of the ninth SCL pulse.
The ACK bit transmit function can be enabled or disabled by software (IICSTAT). However, the ACK pulse on the
ninth clock of SCL is required to complete the one-byte data transfer operation.
Data Output by
Transmitter
Data Output by
Receiver
SCL from
Master
Start
Condition
Clock Pulse for Acknowledgment
Clock to Output
9
8
7
S
1
2
Figure 17-5. Acknowledge on the IIC-Bus
Содержание S3C2416
Страница 33: ...S3C2416X RISC MICROPROCESSOR PRODUCT OVERVIEW 1 5 3 BLOCK DIAGRAM Figure 1 1 S3C2416X Block Diagram ...
Страница 38: ...PRODUCT OVERVIEW S3C2416X RISC MICROPROCESSOR 1 10 153 AIN 1 U14 195 EINT 10 GPG2 K15 237 SDATA 14 C18 ...
Страница 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Страница 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Страница 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Страница 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Страница 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Страница 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Страница 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Страница 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Страница 455: ...S3C2416X RISC MICROPROCESSOR HSMMC CONTROLLER 20 9 4 9 SD COMMAND ISSUE SEQUENCE Figure 20 9 Timeout Setting Sequence ...
Страница 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Страница 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Страница 653: ...S3C2416X RISC MICROPROCESSOR ELECTRICAL DATA 26 15 Figure 26 14 SDRAM READ WRITE Timing Trp 2 Trcd 2 Tcl 2 DW 16 bit ...
Страница 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...
Страница 672: ...MECHANICAL DATA S3C2416X RISC MICROPROCESSOR 30 2 Figure 27 2 330 FBGA 1414 Package Dimension 2 Bottom View ...