Epson S1C17W18 Technical Manual page 47

Bit 11 Reserved
Bits 10–8 CGI1[2:0]
These bits set the internal gate capacitance in the OSC1 oscillator circuit.
For more information, refer to "OSC1 oscillator circuit characteristics, Internal gate capacitance C
in the "Electrical Characteristics" chapter.
Bits 7–6 INV1B[1:0]
These bits set the oscillation inverter gain that will be applied at boost startup of the OSC1 oscillator
circuit.
Table 2.6.6 Setting Oscillation Inverter Gain at OSC1 Boost Startup
Note: The CLGOSC1.INV1B[1:0] bits must be set to a value equal to or larger than the CLGOSC1.
INV1N[1:0] bits.
Bits 5–4 INV1N[1:0]
These bits set the oscillation inverter gain applied at normal operation of the OSC1 oscillator circuit.
Table 2.6.7 Setting Oscillation Inverter Gain at OSC1 Normal Operation
Bits 3–2 Reserved
Bits 1–0 OSC1WT[1:0]
These bits set the oscillation stabilization waiting time for the OSC1 oscillator circuit.
S1C17W18 TECHNICAL MANUAL
(Rev. 1.2)
Table 2.6.5 OSC1 Internal Gate Capacitance Setting
CLGOSC1.CGI1[2:0] bits
0x7
0x6
0x5
0x4
0x3
0x2
0x1
0x0
CLGOSC1.INV1B[1:0] bits
0x3
0x2
0x1
0x0
CLGOSC1.INV1N[1:0] bits
0x3
0x2
0x1
0x0
Table 2.6.8 OSC1 Oscillation Stabilization Waiting Time Setting
CLGOSC1.OSC1WT[1:0] bits
0x3
0x2
0x1
0x0
Seiko Epson Corporation
2 POWER SUPPLY, RESET, AND CLOCKS
Capacitance
Max.
↑
↓
Min.
Inverter gain
Max.
↑
↓
Min.
Inverter gain
Max.
↑
↓
Min.
Oscillation stabilization waiting time
65,536 clocks
16,384 clocks
4,096 clocks
Reserved
"
GI1
2-21