12-5
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
12.6.
Control Registers
T16 Ch.
n
Clock Control Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
T16_
n
CLK
15
–
9
–
0x00
–
R
–
8
DBRUN
0
H0
R/W
7
–
4
CLKDIV[3:0]
0x0
H0
R/W
3
–
2
–
0x0
–
R
1
–
0
CLKSRC[1:0]
0x0
H0
R/W
Bits 15
–
9
Reserved
Bit 8
DBRUN
This bit sets whether the T16 Ch.
n
operating clock is supplied during debugging or not.
1 (R/W): Clock supplied during debugging
0 (R/W): No clock supplied during debugging
Bits 7
–
4
CLKDIV[3:0]
These bits select the division ratio of the T16 Ch.
n
operating clock (counter clock).
Bits 3
–
2
Reserved
Bits 1
–
0
CLKSRC[1:0]
These bits select the clock source of T16 Ch.
n
.
Table 12.6.1 Clock Source and Division Ratio Settings
T16_
n
CLK.
CLKDIV[3:0] bits
T16_
n
CLK.CLKSRC[1:0] bits
0x0
0x1
0x2
0x3
IOSC
OSC1
OSC3
EXOSC/EXCL
m
0xf
1/32,768
1/1
1/32,768
1/1
0xe
1/16,384
1/16,384
0xd
1/8,192
1/8,192
0xc
1/4,096
1/4,096
0xb
1/2,048
1/2,048
0xa
1/1,024
1/1,024
0x9
1/512
1/512
0x8
1/256
1/256
1/256
0x7
1/128
1/128
1/128
0x6
1/64
1/64
1/64
0x5
1/32
1/32
1/32
0x4
1/16
1/16
1/16
0x3
1/8
1/8
1/8
0x2
1/4
1/4
1/4
0x1
1/2
1/2
1/2
0x0
1/1
1/1
1/1
(Note 1) The oscillation circuits/external input that are not supported in this IC cannot be
selected as the clock source.
(Note 2) When the T16_
n
CLK.CLKSRC[1:0] bits are set to 0x3, EXCL
m
is selected for the channel
with an event counter function or EXOSC is selected for other channels.
Summary of Contents for S1C31D50
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Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...