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参数资料
| 型号： | ST92163N4G0V |
| 厂商： | 意法半导体 |
| 英文描述： | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| 中文描述： | 16位产品全速USB微控制器16端点，20,000光盘和2K的RAM，I2C和脊髓损伤的复合设备， |
| 文件页数： | 138/224页 |
| 文件大小： | 1372K |
| 代理商： | ST92163N4G0V |
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ST92163 - USB PERIPHERAL (USB)
USB INTERFACE (
Cont’d
)
8.3.4 Register Description
USB registers can be divided into three groups:
– Commonregisters (page 15): interrupt registers
and USB control registers.
– Function and endpoint registers (pages 15, 4
and 5 depending on howmany endpoints are im-
plemented): USB function addresses and end-
point status/configurations.
– Extra registers (page 60): device configuration.
8.3.4.1 Common registers
These registers affect all endpoints in the USB in-
terface. Theyare all mapped inthe same ST9 reg-
ister page (page number 15).
The USB interface implements vectorized inter-
rupts: through a vector table it is possible to auto-
matically identify the starting address of each In-
terrupt Service Routine. The vector table contains
the 16-bit addresses pointing to each of the inter-
rupt service routines related to the CTR interrupt
for each endpoint. Other two 8-bit locations are
used to store the address of the service routine
handling the interrupts described in the USBISTR
register. When an interrupt request is acknowl-
edged, the USBIVR register provides a vector
pointing to the location in thevector table, contain-
ing the start address of the interrupt service rou-
tine related to the serviced interrupt.
INTERRUPT VECTOR REGISTER (USBIVR)
R248 - Read/Write
Register page: 15
Reset Value: xxxx xxx0 (xxh)
This registermay beused intwo different ways de-
pending on the value of the SDNAV bit in the
CTRL register.
– IfSDNAV bit= 1, Bits7:1are userprogrammable
(bit 0 is fixed to 0). The software writes the ad-
dress of a vector pointing to a single interrupt
routine. The application program has to select
the routinerelatedto the pending interruptsusing
the USBISTR and CTRINF registers.
– If SDNAV = 0, this register is used as a vector
pointing to the16-bit interrupt vectors inprogram
memory containing the start addresses of the in-
terrupt service routines relatedto the occurred
interrupt. If severalinterrupts are simultaneously
pending, hardware writes in this register the in-
terruptroutine address related to the highest pri-
ority pending interrupt.
In this case the meaning of each bit is:
Bits 7:6 =
A[1:0]:
Vector table Address.
These two bits are user programmable and they
contain the two most significant bits of the interrupt
vector table. This allows the user to define the in-
terrupt vector table position inside the first 256 lo-
cations of program memory at 64 bytes boundary.
Bit 5=
CTRO
: Correct Transfer interrupt occurred
0: CTR interrupt pending
1: One of the interrupt flags in the USBISTR regis-
ter is pending
Note:
If several interrupts are simultaneously
pending, hardware writes this bit according to their
relative priorities as listed below starting from the
highest priority one to the lowest priority one:
–
DMA Over/Underrun (see Table 24 and USBIS-
TR register description)
– Correct Transfer on isochronousendpoints (see
EPnRA register description)
– Correct Transfer on non-isochronous endpoints
(see EPnRA register description)
–
Notification events (see Table 24 and USBISTR
register description).
Bits 4:1 =
V[3:1]
: Endpoint Vector
If CTRO = 1, these bits are written by hardware to
specify the endpoint identifier which has generat-
ed the CTR interrupt request.
If several CTR interrupts are pending, hardware
writes the endpoint identifier related to the end-
point with the highest priority. Endpoint priority is
defined according to the following rule: endpoint 0
has the highest priority, then endpoint 1 follows
and so on up to the highest endpoint register pair
(EP15) with the lowest priority.
If CTRO = 0, these bits are fixed to 1. In this case
only one interrupt vector is used for all the inter-
rupts defined in the USBISTR register.
7
0
A1
A0
CTRO
V3
V2
V1
V0
0
相关PDF资料 |
PDF描述 |
|---|---|
| ST92163R4G0V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163R4T1V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92E163R4T1V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92T163R4T1V | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163R4B0 | 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ST92163N4G1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G1E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G1L | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163N4G1V | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT |
| ST92163R4 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS. 20K ROM. 2K RAM. I 2 C. SCI. & MFT |
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