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SPRS457E
– MARCH 2009 – REVISED JUNE 2011
Table 2-5. Pin Descriptions (continued)
Name
BGA
Type
Group
Power
IPU
Reset
Description(4)
ID
(1)
Supply(2)
IPD(3)
State
EM_A2 / HCNTLA
M18
I/O/Z
AEMIF/
VDD_AEMIF2_18_
Output
Async EMIF: Address Bus bit[02]
HPI
33
HPI: The state of HCNTLA and HCNTLB determines
if address, data, or control information is being
transmitted between an external host and the device.
Note: HPI is pin multiplexed with Asynchronous
EMIF at the output pin. HPI is available only when
boot mode selected is HPI boot mode. In this
configuration, the device will always act as a slave.
EM_A1 / HHWIL
M19
I/O/Z
AEMIF/
VDD_AEMIF2_18_
Output
Async EMIF: Address Bus bit[01]
HPI
33
HPI: This pin is half-word identification input HHWIL.
Note: HPI is pin multiplexed with Asynchronous
EMIF at the output pin. HPI is available only when
boot mode selected is HPI boot mode. In this
configuration, the device will always act as a slave.
EM_A0 / GIO67 /
L17
I/O/Z
AEMIF / VDD_AEMIF2_18_
Input
Async EMIF: Address Bus bit[00] Note that the
KEYB2 / HCNTLB
GIO /
33
EM_A0 is always a 32-bit address
KEYSC
AN /
HPI
GIO: GIO[56]
Keyscan: B2
HPI: The state of HCNTLA and HCNTLB determines
if address, data, or control information is being
transmitted between an external host and the device.
Note: HPI is pin multiplexed with Asynchronous
EMIF at the output pin. HPI is available only when
boot mode selected is HPI boot mode. In this
configuration, the device will always act as a slave.
EM_BA1 / GIO66 /
R17
I/O/Z
AEMIF / VDD_AEMIF1_18_
Input
Async EMIF: Bank Address 1 signal = 16-bit
KEYB1 / HINTN
GIO /
33
address.
KEYSC
In 16-bit mode, lowest address bit.
AN /
In 8-bit mode, second lowest address bit
HPI
GIO: GIO[66]
Keyscan: B1
HPI: This pin is host interrupt output HINT
Note: HPI is pin multiplexed with Asynchronous
EMIF at the output pin. HPI is available only when
boot mode selected is HPI boot mode. In this
configuration, the device will always act as a slave.
EM_BA0 / EM_A14
P17
I/O/Z
AEMIF / VDD_AEMIF1_18_
Input
Async EMIF: Bank Address 0 signal = 8-bit address.
/ GIO65 / KEYB0
GIO /
33
In 8-bit mode, lowest address bit.
KEYSC
AN
Async EMIF: Address line (bit[14] when using 16-bit
memories.
GIO: GIO[65]
Keyscan: B0
EM_D15 / GIO64 /
P18
I/O/Z
AEMIF / VDD_AEMIF1_18_
Input
Async EMIF: Data Bus bit[15]
HD15
GIO /
33
HPI
GIO: GIO[64]
HPI: Data bus bit [15]
Note: HPI is pin multiplexed with Asynchronous
EMIF at the output pin. HPI is available only when
boot mode selected is HPI boot mode. In this
configuration, the device will always act as a slave.
Copyright
2009–2011, Texas Instruments Incorporated
Device Overview
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