EMERSON KJ3242X1-BA1控制系統模塊
PLD中四個(gè)32位定時(shí)器的時(shí)鐘源為25MHz。定時(shí)器預分頻器必須配置為生成1MHz定時(shí)器參考。有關(guān)編程信息，請參閱《MVME7100單板計算機程序員參考》。4.7以太網(wǎng)接口MVME7100使用MC864xD以太網(wǎng)控制器提供四個(gè)10/100/1000Mbps全雙工以太網(wǎng)接口。使用兩個(gè)Broadcom BCM5482S PHY。MC864xD上的以太網(wǎng)端口配置為在RGMII模式下運行。兩個(gè)千兆以太網(wǎng)接口連接到帶有集成LED的前面板RJ-45連接器，用于速度和活動(dòng)指示。其他兩個(gè)千兆以太網(wǎng)接口路由到P2用于后端I/O。有關(guān)編程信息，請參閱《MVME7100單板計算機程序員參考。本地總線(xiàn)接口》。MVME71000使用MC864xD本地總線(xiàn)控制器（LBC）訪(fǎng)問(wèn)板載閃存和I/O寄存器。LBC具有可編程定時(shí)模式，以支持不同訪(fǎng)問(wèn)時(shí)間的設備，以及8、16和32位的設備寬度。MVME7100在GPCM模式下使用LBC連接到兩個(gè)板載閃存物理組，一個(gè)板載四UART（QUART）、一個(gè)MRAM和板載32位定時(shí)器以及控制/狀態(tài)寄存器。
The clock source for the four 32-bit timers in the PLD is 25MHz. The timer prescaler must be configured to generate a 1MHz timer reference. For programming information, see MVME7100 Single Board Computer Programmer’s Reference. 4.7 Ethernet Interfaces The MVME7100 provides four 10/100/1000Mbps full-duplex Ethernet interfaces using the MC864xD Ethernet Controllers. Two Broadcom BCM5482S PHYs are used. The Ethernet ports on the MC864xD are configured to operate in RGMII mode. Two Gigabit Ethernet interfaces are routed to front panel RJ-45 connectors with integrated LEDs for speed and activity indication. The other two Gigabit Ethernet interfaces are routed to P2 for rear I/O. For programming information, see MVME7100 Single Board Computer Programmer’s Reference.Local Bus Interface The MVME7100 uses the MC864xD Local Bus Controller (LBC) for access to on-board flash and I/O registers. The LBC has programmable timing modes to support devices of different access times, as well as device widths of 8, 16, and 32 bits. The MVME7100 uses the LBC in GPCM mode to interface to two physical banks of on-board flash, an on-board Quad UART (QUART), an MRAM, and on-board 32-bit timers along with control/status registers.
