参数资料
型号: S3P9664-SM
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO24
封装: 0.300 INCH, SOP-24
文件页数: 109/148页
文件大小: 784K
代理商: S3P9664-SM
CONTROL REGISTERS
S3C9664/P9664 (Preliminary Spec)
4-38
XCON — USB Signal Control Register
Page 1, FEH
Bit Identifier
.7
.6
.5
.4
.3
.2
.1
.0
RESET
RESET Value
0
Read/Write
W
.7
Pull-Up resister at (D- ) enable bit
0
Pull-Up resister at (D-) disable
1
Pull-Up resister at (D+) enable
.6
GPIO or USB Port Select bit
0
General in/out port enable
1
USB port enable
.6 – .5
This register will be used to control the USB signal quality.
The USB signal (D+/D-) of transceiver can be changed by setting this register.
NOTE:
DLY means delay time of rising/fallling
time.
NUM
HEX Value
1
2
3
4
5
0x00
0x38
0x3C
0x3D
0x3E
Result, DM
Default value, 0.88 V, 1.19 V
1.58 V, 1.55 V
1.50 V, 1.50 V
1.65 V, 1.65 V
1.80 V, 1.80 V
Good
NOTE:
This value is only for OTP products. XCON is a write-only register and
can be accessed through page 1.
Edge Control
Bit 5, 2
Bit 4, 1
Bit 3, 0
DLY Value
Unit
About 2.5 nsec
0
1
0
1
0
1
DLY 0
DLY 1
DLY 2
DLY 4
0
Rise edge
1
0
1
DLY 4
DLY 2
DLY 1
DLY 0
1
Fall edge
X
5
4
3
2
1
0
Bit
DM
DP
(VDD = 5.12 V)
x - point 1
x - point
2
DP
DM
DP
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