CS8900A-IQ Cirrus Logic Inc, CS8900A-IQ Datasheet - Page 16
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CS8900A-IQ
Manufacturer Part Number
CS8900A-IQ
Description
Ethernet ICs IC 10Mbps Ethernet Controller 5V
Manufacturer
Cirrus Logic Inc
Datasheet
1.CS8900A-CQZ.pdf
(138 pages)
Specifications of CS8900A-IQ
Ethernet Connection Type
10Base- 2, 10Base- 5, 10Base- F, 10Base- T
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Product
Ethernet Controllers
Standard Supported
IEEE 802.3
Data Rate
10 Mbps
Maximum Operating Temperature
+ 85 C
Package / Case
LQFP-100
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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General Pins
XTAL[1:2] - Crystal, Input/Output PINS 97 and 98.
SLEEP - Hardware Sleep, Input Internal Weak Pullup PIN 77.
LINKLED or HC0 - Link Good LED or Host Controlled Output 0, Open Drain Output PIN
99.
BSTATUS or HC1 - Bus Status or Host Controlled Output 1, Open Drain Output PIN 78.
LANLED - LAN Activity LED, Open Drain Output PIN 100.
TEST - Test Enable, Input Internal Weak Pullup PIN 76.
RES - Reference Resistor, Input PIN 93.
DVDD[1:4] - Digital Power, Power PINS 9, 22, 56, and 69.
DVSS[1:4} and DVSS1A, DVSS3A - Digital Ground, Ground PINS 8, 10, 23, 55, 57, and
70.
AVDD[1:3] - Analog Power, Power PINS 90, 85, and 95.
AVSS[0:4] - Analog Ground, Ground PINS 1, 89, 86, 94, 96.
16
A 20 MHz crystal should be connected across these pins. If a crystal is not used, a 20
MHz signal should be connected to XTAL1 and XTAL2 should be left open. (See
Section 7.3 on page 112 and Section 7.7 on page 122.)
Active-low input used to enable the two hardware sleep modes: Hardware Suspend
and Hardware Standby. (See Section 3.7 on page 27.)
When the HCE0 bit of the Self Control register (Register 15) is clear, this active-low
output is low when the CS8900A detects the presence of valid link pulses. When the
HC0E bit is set, the host may drive this pin low by setting the HCBO in the Self
Control register.
When the HC1E bit of the Self Control register (Register 15) is clear, this active-low
output is low when receive activity causes an ISA bus access. When the HC1E bit is
set, the host may drive this pin low by setting the HCB1 in the Self Control register.
During normal operation, this active-low output goes low for 6 ms whenever there is a
receive packet, a transmit packet, or a collision. During Hardware Standby mode, this
output is driven low when the receiver detects network activity.
Active-low input used to put the CS8900A in Boundary Scan Test mode. For normal
operation, this pin should be high.
This input should be connected to a 4.99KΩ ± 1% resistor needed for biasing of
internal analog circuits.
Provides 5 V ± 5% power to the digital circuits of the CS8900A.
Provides ground reference (0 V) to the digital circuits of the CS8900A.
Provides 5 V ± 5% power to the analog circuits of the CS8900A.
Provide ground reference (0 V) to the analog circuits of the CS8900A.
CIRRUS LOGIC PRODUCT DATASHEET
Crystal LAN™ Ethernet Controller
CS8900A
DS271F5