WTS701EF WINBOND [Winbond], WTS701EF Datasheet - Page 47

• Manufacturer Part Number: WTS701EF
• Description: WINBOND SINGLE-CHIP TEXT-TO-SPEECH PROCESSOR
• Manufacturer: WINBOND [Winbond]

Type II – Two Word Transactions that Receive Data
Type II transactions are four byte transactions that read out the byte count register. As these
commands are all Class0, ICMD will never be active and R/ B will never occur.
Type III – Transactions that send data
Type III transactions send data to the WTS701. If the data rate exceeds the ability of the WTS701 to
read data from the input FIFO or if the internal data queue becomes full then the R/ B line will
handshake a pause in the SPI transaction. The host can either:
•
•
Wait for R/ B to return HIGH then continue sending data
Terminate the transaction and try sending data later
SCLK
MOSI
MISO
SSB
7
SCLK
MOSI
MISO
6
SSB
Command
5
Byte
4
3
Figure 13. Type II SPI Transaction.
Figure 12. Type I SPI Transaction.
2
1
0
7
7
6
6
0
Command
Command
Data Byte
0 0
5
5
Byte
4
4
- 47 -
0
3
3
0
2
2
0
1
1
0
0
0
7
7
6
6
0
Data Byte 0
Command
Data Byte
5
0 0
5
(even)
BCNT0
4
4
0
3
3
2
0
2
Publication Release Date: May 2003
0
1
1
0
0
0
f
e
Data Byte 1
d
BCNT1
(odd)
c
b
a
9
WTS701
8
Revision 3.09