7 ClOCK GeneRaTOR (ClG)
7-14
Seiko epson Corporation
S1C17624/604/622/602/621 TeChniCal Manual
9.5 FOUTH clock (HSCLK Division Ratio) Selection
Table 7.
FOuThD[1:0]
Division ratio
0x3
Reserved
0x2
1/4
0x1
1/2
0x0
1/1
(Default: 0x0)
D1
FOuThe: FOuTh Output enable Bit
Enables or disables FOUTH clock (divided HSCLK clock) external output.
1 (R/W): Enabled (on)
0 (R/W): Disabled (off) (default)
Setting FOUTHE to 1 outputs the FOUTH clock from the FOUTH pin. Setting it to 0 stops the output.
D0
FOuT1e: FOuT1 Output enable Bit
Enables or disables FOUT1 clock (OSC1 clock) external output.
1 (R/W): Enabled (on)
0 (R/W): Disabled (off) (default)
Setting FOUT1E to 1 outputs the FOUT1 clock from the FOUT1 pin. Setting it to 0 stops the output.
PClK Control Register (ClG_PClK)
Register name address
Bit
name
Function
Setting
init. R/W
Remarks
PClK Control
Register
(ClG_PClK)
0x5080
(8 bits)
D7–2 –
reserved
–
–
–
0 when being read.
D1–0 PCKen[1:0] PCLK enable
PCKEN[1:0]
PCLK supply
0x3 R/W
0x3
0x2
0x1
0x0
Enable
Not allowed
Not allowed
Disable
D[7:2]
Reserved
D[1:0]
PCKen[1:0]: PClK enable Bits
Enables or disables clock (PCLK) supply to the internal peripheral modules.
Also set PRUN/PSC_CTL register.
9.6 PCLK Control
Table 7.
PCKen[1:0]
PRun
PClK supply
0x3
1
Enabled (on)
0x2
*
Setting prohibited
0x1
*
Setting prohibited
0x0
0
Disabled (off)
(Default: PCKEN[1:0] = 0x3, PRUN = 0)
Peripheral modules that use PCLK
• 16-bit timer (T16)
• 8-bit timer (T8F)
• UART
• SPI
• I
2
C master (I2CM)
• I
2
C slave (I2CS)
• 16-bit PWM timer (T16E)
• I/O port (P)
• MISC register (MISC)
• Power generator (VD1)
• Supply voltage detector (SVD)
• IR remote controller (REMC)
• A/D converter (ADC10)
• Interrupt controller (ITC)