tmp88ps42ng TOSHIBA Semiconductor CORPORATION, tmp88ps42ng Datasheet - Page 185

• Manufacturer Part Number: tmp88ps42ng
• Description: 8 Bit Microcontroller Tlcs-870/x Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

15.3 Serial clock
15.3.1 Clock source
SIO Status Register
Note 1: The lower 4 bits of each buffer are used during 4-bit transfers. Zeros (0) are stored to the upper 4bits when receiving.
Note 2: Transmitting starts at the lowest address. Received data are also stored starting from the lowest address to the highest
Note 3: The value to be loaded to BUF is held after transfer is completed.
Note 4: SIOCR2 must be set when the serial interface is stopped (SIOF = 0).
Note 5: *: Don't care
Note 6: SIOCR2 is write-only register, which cannot access any of in read-modify-write instruction such as bit operate, etc.
Note 7: T
Note 1: After SIOCR1<SIOS> is cleared to "0", SIOSR<SIOF> is cleared to "0" at the termination of transfer or the setting of
(1F97H)
SIOSR
Internal clock or external clock for the source clock is selected by SIOCR1<SCK>.
SCK output
address. ( The first buffer address transmitted is 01F98H ).
SIOCR1<SIOINH> to "1".
f
; Frame time, T
WAIT
SIOF
BUF
SEF
SIOF
7
Figure 15-2 Frame time (T
Wait control
Number of transfer words
(Buffer address in use)
Serial transfer operating status moni-
tor
Shift operating status monitor
(output)
SEF
D
6
; Data transfer time
5
4
Page 175
TD
Always sets "00" except 8-bit transmit / receive mode.
00:
01:
10:
11:
000:
001:
010:
011:
100:
101:
110:
111:
3
0:
1:
0:
1:
f
) and Data transfer time (T
Tf
Transfer terminated
Transfer in process
Shift operation terminated
Shift operation in process
T
T
T
T
1 word transfer
8 words transfer
4 words transfer
7 words transfer
2 words transfer
3 words transfer
5 words transfer
6 words transfer
f
f
f
f
= T
= 2T
= 4T
= 8T
2
D
D
(Non wait)
D
D
(Wait)
(Wait)
(Wait)
1
01F98H
01F98H ~ 01F99H
01F98H ~ 01F9AH
01F98H ~ 01F9BH
01F98H ~ 01F9CH
01F98H ~ 01F9DH
01F98H ~ 01F9EH
01F98H ~ 01F9FH
0
(Initial value: 00** ****)
D
)
TMP88PS42NG
Write
Read
only
only