Renesas HD151TS207SS Byte16 Control Register

HD151TS207SS

Rev.1.00, Apr.25.2003, page 17 of 38

I2C Controlled Register Bit Map (cont.)

Byte16 Control Register

Bit Description Contents Type Default Note

3V66 divider ratio =

7 3V66 / PCI / PCIF Divider Control

Bit3 R/W X

6 3V66 / PCI / PCIF Divider Control

Bit2

0010 = 1/2,

0011 = 1/3,

0100 = 1/4,

0101 = 1/5,

0110 = 1/6,

0111 = 1/7

1000 = 1/8

1001 = 1/9

1010 = 1/10

1011 = 1/11

R/W X

5 3V66 / PCI / PCIF Divider Control

Bit1 R/W X

4 3V66 / PCI / PCIF Divider Control

Bit0

PCI / PCIF divider ratio = 3v66 x

1/2

R/W X

3 SRC Divider Control Bit3 R/W X

2 SRC Divider Control Bit2 R/W X

1 SRC Divider Control Bit1 R/W X

0 SRC Divider Control Bit0

0001 = 1/1,

0010 = 1/2,

0011 = 1/3,

0100 = 1/4,

0101 = 1/5,

0110 = 1/6

0111 = 1/7

1000 = 1/8

1001 = 1/9

1010 = 1/10

1011 = 1/11 R/W X

Byte17 Control Register

Bit Description Contents Type Default Note

7 Reserved R/W 0

6 Reserved R/W 0

5 Reserved R/W 0

4 PLL2 Output (VCO2) Frequency

Control Bit

(M2 / N2 Divider Control Bit)

PLL2 : for CPU

0 = Normal mode

VCO2 frequency is changed on

Table 5 selection decided by

FS4/3/2/A/B or B9[5:1].

1 = Over or Down clocking mode

VCO2 frequency is changed by

B17[3:0] and B18[7:0] with

decimal.

B17[3:0] and B18[7:0] are able to

be changed at B17[4] = 1.

R/W 0

3 VCO2 Frequency Control Bit11 R/W 0

2 VCO2 Frequency Control Bit10 R/W 1

1 VCO2 Frequency Control Bit9 R/W 0

0 VCO2 Frequency Control Bit8

These bits are 100MHz digit of

VCO2 frequency.

0000 = 0, 0001 = 1 …. 1001 = 9

R/W 0

See

Note

1

Note: 1. B17[3:0] and B18[7:0] must be written together (at writing B18) in every case.

Contents

Main HD151TS207SS Mother Board Clock Generator for Intel P4+ Chipset (Springdale) Description Features Page Rev.1.00, Apr.25.2003, page 3 of 38 Pin Arrangement PCI_STOP#, PWRDWN# = 150 k Internal Pull-up Pin Descriptions HD151TS207SS Pin Descriptions (cont.) Block Diagram * : Latched Input pin. HD151TS207SS I2C Controlled Register Bit Map Byte0 Control Register Table1 Clock Frequency Function Table Table2 Test Clock select table Table3 FS_A and FS_B pin Input level Byte1 Control Register Byte2 Control Register Table4 CPU Clock Power Management Truth Table Table5 SRC Clock Power Management Truth Table Byte3 Control Register Byte4 Control Register Byte5 Control Register Byte6 Control Register Byte7 Vendor Identification Register Byte8 Read Back Byte Count Register Byte9 Control Register Table6 Clock Frequency Function Table Byte10 Control Register Byte11 Control Register HD151TS207SS Byte12 Control Register Byte13 Control Register Byte14 Control Register Byte15 Control Register Byte16 Control Register How to set VCO2 frequency to 666 MHz. How to read actual frequency of VCO2 and CPU clock Byte20 Control Register Byte21 Control Register HD151TS207SS Byte22 Control Register Byte23 Control Register Byte24 Control Register Byte25 Control Register Byte26 Control Register Byte27 Control Register Byte28 Control Register Byte29 Control Register Clock Stop Timing Diagram PCI_STOP# Assertion/De-assersion PWRDWN# Assertion/De-assersion Renesas clock generator I2C Serial Interface Operation Renesas clock generator I2C Serial Interface Operation (cont.) Absolute Maximum Ratings Recommended Operating Conditions DC Electrical Characteristics / Serial Input Port AC Electrical Characteristics / Serial Input port DC Electrical Characteristics CPU/CPU# Clock Ta = 0C to 70C, VDD = 3.3 V, Iref = 475 AC Electrical Characteristics CPU/CPU# Clock (CPU at 0.7V Timing) Ta = 0C to 70C, VDD = 3.3 V, CL = 2 pF, Rs = 33.2 , Rp = 49.9 DC Electrical Characteristics SRC/SRC# Clock Ta = 0C to 70C, VDD = 3.3 V, Iref = 475 AC Electrical Characteristics SRC/SRC# Clock (SRC at 0.7V Timing) Ta = 0C to 70C, VDD = 3.3 V, CL = 2 pF, Rs = 33.2 , Rp = 49.9 DC Electrical Characteristics / 3V66 Buffer (CK409T Type5 Buffer) AC Electrical Characteristics / 3V66 Buffer DC Electrical Characteristics / PCI & PCIF Clock (CK409T Type5 Buffer) AC Electrical Characteristics / PCI & PCIF Clock DC Electrical Characteristics / USB & VCH 48MHz Clock (CK409T Type3A Buffer) AC Electrical Characteristics / USB & VCH 48MHz Clock Ta = 0C to 70C, VDD = 3.3 V, CL = 20 pF DC Electrical Characteristics / DOT Clock (CK409T Type3B Buffer) AC Electrical Characteristics / DOT Clock Ta = 0C to 70C, VDD = 3.3 V, CL = 10 pF DC Electrical Characteristics / REF Clock (CK409T Type5 Buffer) AC Electrical Characteristics / REF Clock Clock Out tcycle n t = (tcycle n) - (tcycle n+1) tcycle n+1 Fig.1 Cycle to Cycle Jitter (3.3V Single Ended Clock Output) Fig.2 Output Clock Skew (3.3V Single Ended Clock Output) Fig.3 Load Circuit for CPU/CPU# Package Dimensions Unit : mm Rev.1.00, Apr.25.2003, page 38 of 38 Keep safety first in your circuit designs! Colophon 0.0 http://www.renesas.com Copyright 2003. Renesas Technology Corporation, All rights reserved. Printed in Japan.