HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 260

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 10 16-Bit Integrated Timer Pulse Unit (ITU)
Notes: 1. Only the values of bits A27–A24 and A8–A0 are valid; bits A23–A9 are ignored. For
10.2
10.2.1
The timer start register (TSTR) is an eight-bit read/write register that starts and stops the timer
counters (TCNT) of channels 0–4. TSTR is initialized to H'E0 or H'60 by a reset and in standby
mode.
Note: * Undefined
Bits 7–5—Reserved: Cannot be modified. Bit 7 is read as undefined. Bits 6 and 5 are always read
as 1. The write value to bit 7 should be 0 or 1, and the write value to bits 6 and 5 should always be
1.
Bit 4—Count Start 4 (STR4): STR4 starts and stops TCNT4.
Bit 4: STR4
0
1
Rev. 7.00 Jan 31, 2006 page 234 of 658
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Channel Name
4
Bit
Initial value
Read/Write
2. Only 0 can be written to clear flags.
ITU Register Descriptions
Timer Start Register (TSTR)
General register B4
Buffer register A4
Buffer register B4
details on the register addresses, see section 8.3.5, Area Descriptions.
Description
TCNT4 is halted
TCNT4 is counting
—
—
7
*
—
—
6
1
—
—
Abbrevi-
ation
GRB4
BRA4
BRB4
5
1
STR4
R/W
4
0
R/W
R/W
R/W
R/W
STR3
R/W
Initial
Value
H'FF
H'FF
H'FF
3
0
STR2
R/W
2
0
Address *
H'5FFFF3A
H'5FFFF3B
H'5FFFF3C
H'5FFFF3D
H'5FFFF3E
H'5FFFF3F
STR1
R/W
1
0
(Initial value)
1
Access
Size
8, 16, 32
8, 16, 32
8, 16, 32
8, 16, 32
8, 16, 32
8, 16, 32
STR0
R/W
0
0