KSZ8842-16_08 Datasheet, PDF (18/141 Pages) Micrel Semiconductor – 2-Port Ethernet Switch with Non-PCI Interface

Micrel, Inc.
KSZ8842-16/32 MQL/MVL/MVLI/MBL
Ball Description for KSZ8842-16 Switches (8/16-Bit)
Ball Number Ball Name
E8
TEST_EN
D10
SCAN_EN
A10
P1LED2
B10
P1LED1
C10
P1LED0
Type
I
I
Opu
Opu
Opu
Ball Function
Test Enable
For normal operation, pull-down this ball to ground.
Scan Test Scan Mux Enable
For normal operation, pull-down this ball to ground.
Port 1 and Port 2 LED indicators¹ defined as follows:
Switch Global Control Register 5:
SGCR5 bit [15,9]
P1LED3² /P2LED3
[0,0] Default
[0,1]
—
—
P1LED2/P2LED2
Link/Act
100Link/Act
P1LED1/P2LED1
Full duplex/Col 10Link/Act
P1LED0/P2LED0
Speed
Full duplex
Reg. SGCR5 bit [15,9]
[1,0]
[1,1]
P1LED3² /P2LED3
Act
—
P1LED2/P2LED2
Link
—
P1LED1/P2LED1
Full duplex/Col —
P1LED0/P2LED0
Speed
—
Notes:
A9
P2LED2
Opu
1. Link = On; Activity = Blink; Link/Act = On/Blink; Full Dup/Col = On/Blink;
B9
P2LED1
Opu
Full Duplex = On (Full duplex); Off (Half duplex)
C9
P2LED0
Opu
Speed = On (100BASE-T); Off (10BASE-T)
2. P1LED3 is ball A4. P2LED3 is ball C6.
Port 1 and Port 2 LED indicators³ for Repeater mode defined as follows:
Switch Global Control Register 5: SGCR5 bit
[15,9]
[0,0] Default
[0,1] [1,0] [1,1]
P1LED3, P2LED3 RPT_COL, RPT_ACT
—
P1LED2, P2LED2 RPT_Link3/RX, RPT_ERR3 —
P1LED1, P2LED1 RPT_Link2/RX, RPT_ERR2 —
P1LED0, P2LED0 RPT_Link1/RX, RPT_ERR1 —
Note 3: RPT_COL = Blink; RPT_Link3/RX (Host port) = On/Blink;
RPT_Link2/RX (Port 2) = On/Blink; RPT_Link1/RX (Port 1) = On/Blink;
RPT_ACT = on if any activity, RPT_ERR3/2/1 = RX error on port 3, 2, or 1.
D9
RDYRTNN
Ipd
Ready Return Not:
For VLBus-like mode: Asserted by the host to complete synchronous read
cycles. If the host doesn’t connect to this ball, assert this ball.
For burst mode (32-bit interface only): Host drives this ball low to signal waiting
states.
A8
BCLK
October 2007
Ipd
Bus Interface Clock
Local bus clock for synchronous bus systems. Maximum frequency is 50MHz.
18
M9999-102207-1.9