UPD720101 Datasheet, PDF (13/36 Pages) NEC – USB2.0 HOST CONTROLLER

µPD720101
3. ELECTRICAL SPECIFICATIONS
3.1 Buffer List
• 3 V input buffer with pull down resistor
NTEST1, TEST, SRMOD, NANDTEST, SMC, AMC, TEB
• 3 V PCI IOL = 9 mA 3-state output buffer
PPON(5:1), SRCLK
• 3 V IOL = 9 mA bi-directional buffer
LEGC, SRDTA
• 3 V IOL = 9 mA bi-directional buffer with enable (OR type)
OCI(5:1)
• 3 V oscillator interface
XT1/SCLK, XT2
• 5 V input buffer
VBBRST0, VCCRST0
• 5 V IOL = 12 mA N-ch open drain buffer
SMI0, PME0, INTA0, INTB0, INTC0, SERR0
• 5 V PCI input buffer with enable (OR type)
PCLK, GNT0, IDSEL
• 5 V PCI IOL = 12 mA 3-state output buffer
REQ0
• 5 V PCI IOL = 9 mA bi-directional buffer with input enable (OR-type)
AD(31:0), CBE(3:0)0, PAR, FRAME0, IRDY0, TRDY0, STOP0, DEVSEL0, PERR0, CRUN0
• USB interface, analog signal
DP(5:1), DM(5:1), RSDP(5:1), RSDM(5:1), RREF
Above, “5 V” refers to a 3 V buffer with 5 V tolerant circuit. Therefore, it is possible to have a 5 V connection for an
external bus, but the output level will be only up to 3 V, which is the VDD voltage. Similarly, “5 V PCI” above refers to a
PCI buffer that has a 5 V tolerant circuit, which meets the 3 V PCI standard; it does not refer to a PCI buffer that
meets the 5 V PCI standard.
Data Sheet S16265EJ4V0DS
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