
Philips Semiconductors
PNX15xx Series
Volume 1 of 1
Chapter 5: The Clock Module
PNX15XX_SER_3
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 3 — 17 March 2006
5-46
4
turn_off_ack
R
0
0 - Indicates if the enabled clock is running
1 - Indicates that the clock is being blocked during a frequency
change to avoid glitches
3
sel_spdi_clk_src
R/W
0
0: clk_spdi_src = clk_144
1: clk_spdi_src = clk_72
2:1
sel_spdi_clk
R/W
00
00: clk_spdi = 27 MHz xtal_clk
01: clk_spdi = clk_spdi_src
10: clk_spdi = UNDEF
11: clk_spdi = LAN_TXD[0]
0
en_clk_spdi
R/W
1
1: enable clk_spdi
Offset 0x04,7318-0x04,73FCReserved
General Purpose
Offset 0x04,7400
CLK_GPIO_Q4_CTL
31:4
Reserved
R/W
-
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
3
turn_off_ack
R
0
0 - Indicates if the enabled clock is running
1 - Indicates that the clock is being blocked during a frequency
change to avoid glitches
2:1
sel_clk_gpio_q4_ctl
R/W
00
00: clk_gpio_q4_ctl = 27 MHz xtal_clk
01: clk_gpio_q4_ctl = DDS8
10: clk_gpio_q4_ctl = 27 MHz xtal_clk
11: clk_gpio_q4_ctl = LAN_TXD[1]
0
en_clk_gpio_q4_ctl
R/W
1
1: enable clk_gpio_q4_ctl
Offset 0x04,7404
CLK_GPIO_Q5_CTL
31:4
Reserved
R/W
-
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
3
turn_off_ack
R
0
0 - Indicates if the enabled clock is running
1 - Indicates that the clock is being blocked during a frequency
change to avoid glitches
2:1
sel_clk_gpio_q5_ctl
R/W
00
00: clk_gpio_q5_ctl = 27 MHz xtal_clk
01: clk_gpio_q5_ctl = DDS7
10: clk_gpio_q5_ctl = 27 MHz xtal_clk
11: clk_gpio_q5_ctl = LAN_TXD[2]
0
en_clk_gpio_q5_ctl
R/W
1
1: enable clk_gpio_q5_ctl
Offset 0x04,7408
CLK_GPIO_Q6_12_CTL
31:4
Reserved
R/W
-
To ensure software backward compatibility unused or reserved bits
must be written as zeros and ignored upon read.
3
turn_off_ack
R
0
0 - Indicates if the enabled clock is running
1 - Indicates that the clock is being blocked during a frequency
change to avoid glitches
Table 11: CLOCK MODULE REGISTERS …Continued
Bit
Symbol
Acces
s
Value
Description