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Section 10 Serial Communication Interface
Rev. 6.00 Sep 12, 2006 page 299 of 526
REJ09B0326-0600
Bit 2
Transmit End Interrupt Enable (TEIE):
Bit 2 selects enabling or disabling of the
transmit end interrupt request (TEI) if there is no valid transmit data in TDR when MSB data is to
be sent.
Bit 2: TEIE
Description
0
Transmit end interrupt request (TEI) disabled
(initial value)
1
Transmit end interrupt request (TEI) enabled
*
Note:
*
TEI can be released by clearing bit TDRE to 0 and clearing bit TEND to 0 in SSR, or by
clearing bit TEIE to 0.
Bits 1 and 0
Clock Enable 1 and 0 (CKE1, CKE0):
Bits 1 and 0 select the clock source and
enabling or disabling of clock output from the SCK
3
pin. These bits determine whether the SCK
3
pin functions as an I/O port, a clock output pin, or a clock input pin.
The CKE0 bit setting is only valid in case of internal clock operation (CKE1 = 0) in asynchronous
mode. In synchronous mode, or when external clock operation is used (CKE1 = 1), bit CKE0
should be cleared to 0.
After setting bits CKE1 and CKE0, set the operating mode in the serial mode register (SMR).
For details on clock source selection, see table 10.10 in 10.3.3, Operation.
Description
Bit 1: CKE1
Bit 0: CKE0
Communication Mode
Clock Source
SCK
3
Pin Function
0
0
Asynchronous
Internal clock
I/O port
*
1
Synchronous
Internal
clock
Serial clock output
*
1
1
Asynchronous
Internal
clock
Clock output
*
2
Synchronous
Reserved
1
0
Asynchronous
External clock
Clock input
*
3
Synchronous
External
clock
Serial clock input
1
Asynchronous
Reserved
Synchronous
Reserved
Notes: 1. Initial value
2. A clock with the same frequency as the bit rate is output.
3. Input a clock with a frequency 16 times the bit rate.
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
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Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...