参数资料
型号: XR17V354IB-E4-EVB
厂商: Exar Corporation
文件页数: 5/66页
文件大小: 0K
描述: EVAL BRD FOR XR17V354-E4 176BGA
产品培训模块: PCIe UARTs
标准包装: 1
主要目的: 接口,UART
嵌入式:
已用 IC / 零件: XR17V354
已供物品:
其它名称: 1016-1612
XR17V354IB-E4-EVB-ND
XR17V354
13
REV. 1.0.3
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
NOTE: EWR=Read/Write from external EEPROM. RWR=Read/Write. RO= Read Only. RWC=Read/Write-Clear.
1.2
EEPROM Interface
The V354 provides an interface to an Electrically Erasable Programmable Read Only Memory (EEPROM). The
EEPROM must be a 93C46-like device, with its memory configured as 16-bit words. This interface is provided
in order to program the registers in the PCI Configuration Space of the PCI UART during power-up. The
EEPROM must be organized into address/data pairs. The first word of the pair is the address and the second
word is the data. Table 2 below shows the format of the 16-bit address:
TABLE 2: EEPROM ADDRESS BIT DEFINITIONS
BIT(S)
DEFINITION
15
Parity Bit - Odd parity over entire address/data pair
If there is a parity error, it will be reported in bit-3 of the REGB register in
the Device Configuration Registers (offset 0x08E).
14
Final Address
If 1, this will be the last data to be read.
If 0, there will be more data to be read after this.
13:8
Reserved - Bits must be ’0’
7:0
Target Address - See
0xB0
31:0
RO
PCIe Capability Offset 0x30 - Link Status2/Control2
0x00010001
0xB4-0xFF 31:0
RO
Not implemented or not applicable (return zeros)
0x00000000
0x100
31:0
RO
VC Resource Capability Register
0x00010002
0x104-
0x113
31:0
RO
Not implemented or not applicable (return zeros)
0x00000000
0x114
31:0
RO
VC Offset 0x4
0x8000000FF
TABLE 1: PCI LOCAL BUS CONFIGURATION SPACE REGISTERS
ADDRESS
OFFSET
BITS
TYPE
DESCRIPTION
RESET VALUE
(HEX OR BINARY)
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