 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
CS5535 数据表(PDF) 323 Page - National Semiconductor (TI) |
|
|
|
|||||||||||||||||||||||||||||
CS5535 数据表(HTML) 323 Page - National Semiconductor (TI) |
|
|
323 / 555 page  Revision 0.8 323 www.national.com 5.8 PROGRAMMABLE INTERVAL TIMER REGISTER DESCRIPTIONS The registers for the Programmable Interval Timer (PIT) are divided into three sets: • Standard GeodeLink Device MSRs (Shared with DIVIL, see Section 5.6.1 on page 299.) • PIT Specific MSRs • PIT Native Registers The MSRs are accessed via the RDMSR and WRMSR pro- cessor instructions. The MSR address is derived from the perspective of the CPU Core. See Section 3.2 "CS5535 MSR Addressing" on page 53 for more details on MSR addressing. All MSRs are 64 bits, however, the PIT Specific MSRs are called out as 8 bits. The PIT treats writes to the upper 56 bits (i.e., bits [63:8]) of the 64-bit MSRs as don’t cares and always returns 0 on these bits. The PIT Specific MSRs are summarized in Table 5-20. The Native registers associated with the PIT are summa- rized in Table 5-21 and are accessed as I/O Addresses. The reference column in the tables point to the page where the register maps and bit descriptions are listed. Table 5-20. PIT Specific MSRs Summary MSR Address Type Register Name Reset Value Reference 51400036h RO PIT Shadow (PIT_SHDW) 00h Page 324 51400037h R/W PIT Count Enable (PIT_CNTRL) 03h Page 324 Table 5-21. PIT Native Registers Summary I/O Address Type Width (Bits) Register Name Reset Value Reference 40h W 8 PIT Timer 0 Counter - System (PIT_TMR0_CNTR_SYS) 00h Page 325 R 8 PIT Timer 0 Status - System (PIT_TMR0_STS_SYS) 00h Page 325 41h W 8 PIT Timer 1 Counter - Refresh (PIT_TMR1_CNTR_RFSH) 00h Page 326 R 8 PIT Timer 1 Status - Refresh (PIT_TMR1_STS_RFSH) 00h Page 327 42h W 8 PIT Timer 2 Counter - Speaker (PIT_TMR2_CNTR_SPKR) 00h Page 327 R 8 PIT Timer 2 Status - Speaker (PIT_TMR2_STS_SPKR) 00h Page 328 43h R/W 8 PIT Mode Control Word (PIT_MODECTL_WORD) 00h Page 329 61h R/W 8 Port B Control (PIT_PORTBCTL) 00h Page 330 |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
