tmp88cu74 TOSHIBA Semiconductor CORPORATION, tmp88cu74 Datasheet - Page 104

• Manufacturer Part Number: tmp88cu74
• Description: Cmos 8-bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

SIO Interface 1 Control Register 1
SIO Interface 1 Control Register 2
SIO1CR1
(00027H)
SIO1CR2
(00028H)
Note 1: Set SIOS to “0” and SIOINH to “1” when setting the transfer mode or serial clock.
Note 2: SIO1CR1 is write-only registers, which cannot access any of in read-modify-write instruction such as bit operate,
SIOS
SIOINH
SIOM
SIOS
WAIT
SCK
BUF
7
7
etc.
Transfer mode select
Serial clock select
Number of transfer words
SIO
INH
Indicate transfer start/stop
Continue/Abort transfer
Wait control
6
6
Figure 2.11.2 SIO Interface 1 Control Registers (1/2)
Output on
5
5
SCK
SIOM
4
4
WAIT
1 pin
3
3
88CU74-104
0: Stop
1: Start
0: Continue transfer
1: Abort transfer (automatically cleared after abort)
000: 8-bit transmit mode
010: 4-bit transmit mode
100: 8-bit transmit/receive mode
101: 8-bit receive mode
110: 4-bit receive mode
Always “0” (Except 8 bit transmit/receive modes)
00: T
01: T
10: T
11: T
000: 1 word transfer
001: 2 words transfer
010: 3 words transfer
011: 4 words transfer
100: 5 words transfer
101: 6 words transfer
110: 7 words transfer
111: 8 words transfer
000
001
010
011
111
f
f
f
f
= T
= 2T
= 4T
= 8T
2
2
DV1CK = 0 DV1CK = 1 DV1CK = 0 DV1CK = 1
D
fc/2
fc/2
fc/2
fc/2
D
D
D
(Non-wait)
DV7CK = 0
13
8
6
5
SCK
NORMAL1/2, IDLE1/2 mode
BUF
(Wait)
1
1
External clock (input from
fc/2
fc/2
fc/2
fc/2
14
9
7
6
0
0
Buffer address used
00FF8H
00FF8 - 00FF9H
00FF8 - 00FFAH
00FF8 - 00FFBH
00FF8 - 00FFCH
00FF8 - 00FFDH
00FF8 - 00FFEH
00FF8 - 00FFFH
SIO1
fs/2
fc/2
fc/2
fc/2
(Initial value: 0000 0000)
(Initial value: ***0 0000)
DV7CK = 1
5
8
6
5
SCK
fs/2
fc/2
fc/2
fc/2
5
9
7
6
pin)
SLOW,
SLEEP
mode
fs/2
µ
µ
µ
TMP88CU74
5
2007-10-19
2003-02-17
Write
Write
only
only